Rockwool Nrc Rating

95 and a CAC panel rating of 22. There are multiple rating systems: NRC, OITC, STC, etc. Powerful, yet flexible and lightweight, the ENERWRAP MA 960 performance stone wool blanket (wrap) insulation is designed for high temperature, moisture intense industrial surfaces. Safety Data Sheets. You can also use these rigid boards for making. 0,Acoustic Ceiling Tiles,Acoustic Ceiling Board,Acoustical Ceiling Panel from Supplier or Manufacturer-Shandong Huamei Building Materials Co. • The higher the CAC rating, the better the performance. In both cases, the higher the rating, the more effective the product. Single Figure Rating : NRC. The Acoustic Plaster System comprises a special mineral wool composite panel that is bonded onto the substrate and finished with a seamless layer of acoustic plaster. * Noise Reduction Coefficient or the NRC As the name states, the Noise Reduction Coefficient shows how much sound energy is absorbed by the absorbing material. Applic Ations. Editor’s Note: STC is often mentioned alongside NRC in construction documents but should not be confused with each other. Eliminates slap-echo between parallel surfaces and improves signal-to-noise ratio for listening or recording. com Issued 01-01-18 Supersedes 08-23-17. It not only provides a. The Noise Reduction Coefficient (commonly abbreviated NRC) is a single number value ranging from 0. Retrofit Case Study. Over their 50 years they have continued to develop their manufacturing output, having moved from carpet under-felts to polypropylene carpets, polyester insulation and premium interior acoustics Autex ™ are passionate about growing with modern technologies and market changes. Compare spray foam. Merchandise credit check is not valid towards purchases made on MENARDS. This test will need to be repeated for different frequencies. Fiberglass, Rockwool, Polyester, Cotton, and Sheep Absorption Coefficients 0. Faced Mineral Wool. To determine the coefficient ( C) of sound reduction, use the decibel drop ( d) in the following formula: Example: for a 23. 00 = 100% absorbtion. The perfect example of a damping material is Green Glue, although silicone caulk has similar properties. Mineral Wool Insulation in 6 pounds per unit density. The table below gives some NRC ratings for common building materials. The GIK Acoustic is made of a 100mm of rigid rockwool and a choice of one-dimensional or two-dimensional scattering / diffusion sequences. Single 95x35mm (4"x2")Stud wall with 1 layer of 16mm (5/8") Plaster board on one side and 1 layer of 16mm on the other side on a horizontal flexible channel at 600mm (2ft) centres screwed to the stud. Appearance. Great as Acoustic insulation or as a soundproofing material Cost effective and Very High NRC Rating, better than Owens Corning 703 Water repelling - hydrophobic- Class A fire rating. classrooms have a speech intelligibility rating of 75 percent or less. The mass per unit area, m s , is the product of the material density and its thickness. I bought some Roxul mineral wool> If this is your first visit, be sure to check out the FAQ by clicking the link above. 00 , αw = 1. In the following 13 commercial wall systems, ROCKWOOL AFB® delivers excellent fire resistance ratings and. glasswool and rockwool and the inherent safety in using these products. Rating of how effective a partition attenuates airborne sound. Concrete block, coarse. (b) In theory a 100% absorbent room, the critical distance would be at the walls. The 4" thickness provides both excellent sound absorption (NRC 1. Usually these materials are easiest to source in 2" thick slabs. This white textured panel with shadowline tapered edges, is made using water-felted mineral fiber material for offering superior acoustic performance. MINERAL WOOL INSULATION Values are reported to the nearest 5 rating. The stone wool-based insulation is made from natural stone and 75% recycled content, which. 65 at 1" thickness and 1. 90, glass fiber poly acoustical backers are a great option for those seeking an even higher acoustical absorption. Fire Safe Properties. 7 (about 1-1/2 in. About Rockwool Fibertex 450. conducted technical reviews, and reviewed contract submittals for compliance to all technical requirements. Rockwool can achieve a NRC of 1,0 to provide excellent acoustical properties. 0 that describes the average sound absorption performance of a material. com is the only company that can actually rent sound booths on a weekly basis. Damping is achieved with the help of damping compounds. Now let discuss what are the types of mineral wools and how it can be differentiated based on its manufacturing style. The higher the rating, the better the sound absorption. Summary: Increasing STC Ratings. 24 psf: Water: ASTM E331. 90 Better NRC 0. Two (2) Inch Regular Tailored Edge Fabric Finish Baffles: Mineral wool core with fiberglass mat front and back; square edges; two (2) inches thick. Performance: The performance of sound absorbing Products can be measured and expressed as a Noise Reduction Coefficient (NRC). The density of the wool fibres provides natural acoustic absorbtion to make your house so much quieter. NRC rating 1 ASTM C423 ROCKWOOL Technical Insulation offers a wide range of facings, dimensions and thicknesses. See the proper procedures for handling insulation substances. Today, FabriTRAK® Systems Inc. glasswool and rockwool and the inherent safety in using these products. studies have proven that stone or mineral wool insulation’s provide a 54% increase in overall fire resistance rating compared to non-insulated assemblies. 16mm USG Boral FireStop®. The ratio between direct and reverberant sound would be close to 1:1. An NRC of 1 means that the product absorbs all sound. ROCKWOOL stone wool products are made of basalt, a volcanic stone, which is the world's most and has attained a Class A absorption rating for acoustic and Noncombustible / A1 Fire NRC = 0. It is light duty thermal and acoustic insulation suitable for continuous operation up to 450oC. Rockwool Mattress is a precisely engineered bonded fibrous insulation that offers maximum resistance to the passage of heat. Armstrong Ceilings offers ceilings to match any design style. Durock is manufactured in sheets with a thickness of anywhere from 1/4 to 5/8 inch, a width of 32, 36 or 38 inches and a length between 4 and 10 feet. These blankets are also effective in reducing low-frequency sound levels from machinery, mechanical equipment and other ordinary mineral wool products. Thermal insulation is the reduction of heat transfer between objects in thermal contact or in range of radiative influence. STC and noise reduction coefficient (NRC) are important elements of sound control. 4" of 8 lbs. Quiet Batt™ 30 is ideal for walls, floors, and ceilings and has been shown to reduce sound transfer across those surfaces. 0 indicates the object does not attenuate mid-frequency sounds, but rather reflects sound energy. Discover a universal assistant for all of your unit conversion needs - download the free demo version right away!. When we're soundproofing a partition (wall or ceiling) we'd like to introduce absorption in the otherwise hollow wall or ceiling cavities. Rockwool slab (S60) and 50 mm thickness - NRC = 0. What is NRC? NRC stands for Noise Reduction Coefficient and is a standard rating for how well a material absorbs sound. Fiberglass insulation in interior walls and floors/ceilings can reduce sound between spaces by 5 to 15 decibels. ASJ Max jacket does not support mold growth when 125 250 500 1000 2000 4000 NRC 701, unfaced 1 (25) 0. You may have to register before you can post: click the register link above to proceed. Fire safety as a factor Common insulations perform in very different manners when it comes to fire safety. It can be used on flat or slightly curved surfaces for thermal and acoustic insulation. 95 NRC rating is capable of absorbing 95 percent of the sound in a space, while the remaining 5 percent is reflected. Controlling Sound With LD-C-50® Design Note Pg 2 www. Mineral Wool Insulation in 6 pounds per unit density. When compared with cellulose insulation, fiber glass and mineral wool offer the following. 57”), and 70mm (2. DuPree Office of Noise Control, California Department of Health Services Berkeley, California 94704 Introduction building codes. The NRC Value (Noise Reduction Co-efficient) is the index of measurement of sound absorption of the surface of the material, which is tested in accordance with ASTM C423. Buy Nankarrow GeoWool™ 4ft x 2ft Premium Rock Wool Acoustic Panels 50mm in India from manufacturer at the lowest cheap & best price. It might have a high pitch like a flute might make (2000 Hz) or a low pitch as from a tuba (as low as 29 Hz). ASTM E119, Standard Test Methods for Fire Tests of Building Construction and Materials, is the test standard for determining the fire-resistance. Fiberglass insulation in interior walls and floors/ceilings can reduce sound between spaces by 5 to 15 decibels. Spray foam insulation – Spray foam insulation will ignite at 700°F. However, this method is not as accurate as Sound Absorption Rating, αw, since it will not show performance extremes, like performance at extremely low or extremely high frequencies. Both fiberglass and stone wool insulation have merit, promote fire protection and sustainability, and offer value to architects, contractors, and property owners alike. Cost effective and Very High NRC Rating, better than Owens Corning 703. China Best Price Acoustic Rock Wool for Steel Sandwich Panel, Find details about China Insulation Rock Wool, Rockwool Sandwich Panel from Best Price Acoustic Rock Wool for Steel Sandwich Panel - Zhengzhou Rosewool Insulation Refractory Co. Mineral Wool Insulation Upholstery Polyester Sheet Sound Absorb Acoustic Foam Acoustic Foam Roll Acoustic Fabric Panels Home / Customer Reviews. , Glass wool Insulation is one of the most widely used forms of insulations world-wide because of its thermal and. This NRC is not possible with typical mineral board tile. Easy to use, adheres easy, cleanup easy. Rock wool 30mm, 100 kg/m3 direct to masonry 17 0,10 0,40 0,80 0,90 Rock wool 30mm, 200 kg/m3 over 300mm air gap 17 0,40 0,75 0,90 0,80 0,90 0,85 Glass wool or mineral wool on solid backing 25mm 0,20 0,00 0,70 0,00 0,90 0,80 Glass wool or mineral wool on solid backing 50mm 0,30 0,00 0,80 0,00 0,95 0,90. This is more conceptual than physically achievable: even very thick concrete walls will attenuate sound and may. This acoustic Mineral Wool Insulation comes in either 4lbs or 8lbs per unit density. 00 = 100% absorbtion. 76 Thermafleece CosyWool Rolls are rich in British wool, easy to install between and over joists and ideal for floors and lofts. But what does this mean? The R-value of insulation represents its heat resistance. Batts can improve wall assembly STC ratings by up to 10dB. Rockwool in its lifetime (more than 50 years) can save more than 100 times the energy used for its production. Installation A : 50mm rockwool insulation Installation B : 50mm rockwool insulation plus 200mm cavity 0. All panels were white and measured 1220 mm (48 inches). Everything in acoustics, particularly. The same walls, air sealed and. Absorption Plus High NRC Panel high temperature fire resistance combined with exceptional Flame Spread and Smoke Development ratings satisfy CODE requirements for exposed insulation with a Class A fire exposure rating per ASTM E84. It looks like the densest mineral wool isn't even available in the largest thickness, and 6" of the least dense wool (CW 4) has better absorption than 4" of the most dense wool (CW 8). The other is a factor of their density. Fiber glass insulation and mineral wool insulation - are naturally non-combustible 11. • When using a high CAC ceiling, wall construction with a minimum STC 40 rating should be specified. 95(with 60kg/m3 rockwool insulation) Fire Resistance Rating: SGS A2 : Particle Emission accordingly to Danish Society of Indoor Climate: 0. Roof construction in Type I Construction two stories or less and Type II Construction of any height, including girders, trusses, framing, and decking. , NJ | Read More >> Insulating a 2×4 wall with Foam it Green is the quickest and easiest way to meet code standards. Floor/Ceiling Assemblies Isolate sound. STC ratings are indicated for the system, not components of a system. It is more rigid than other batts but is a pre-construction product. Product System Documentation 1. Not easily ignitable: Conforms to Class P as per BS 476 part 5. Sound insulation of ceilings is measured using Ceiling Attenuation Class (CAC). 3-layer CLT ( 4 ½ in) 6. In this series of articles, we compare spray foam insulation to mineral wool, cellulose, foam board, and other types of insulation, to help homeowners get the information they need to make a decision on what is right for their home. 10 per square foot. • Easy Installation: SilentFiber™ Mineral Wool Boards are a great choice for custom installations or DIY acoustics. #N#Staggered stud wall construction with 1 layer of 16mm (5/8") Plasterboard on studs of 95x35mm (4 x 11/2. 2x3 wood studs at 16 in o. HomeRAB Pre-Cladding & RAB Board Installation Manual 2. #N#Owens Corning 703 Rigid Fiberglass Board (PLAIN) is used mostly for acoustical insulation applications due to its outstanding sound absorption qualities. For example, a thick concrete wall will block more sound than a thin gypsum/2x4 wall. This acoustic Mineral Wool Insulation comes in either 4lbs or 8lbs per unit density. Rockwool PROROX SL930 Acoustic Mineral Wool (RW3) (60kg per m3) is high-density acoustic mineral wool that is used to treat the 'open spaces', or cavities, between flooring joists, stud-frame walls and ceilings. #N#Staggered stud wall construction with 1 layer of 16mm (5/8") Plasterboard on studs of 95x35mm (4 x 11/2. Concrete masonry offers excellent noise control in two ways. Gypsum board is more for highs. It might have a high pitch like a flute might make (2000 Hz) or a low pitch as from a tuba (as low as 29 Hz). While the soundproofing capabilities of this spray foam range by manufacturer, it offers a NRC of. PRODUCT DESCRIPTION. (in) (mm) 125 250 500 1000 2000 4000 NRC. 5” thick sound absorbing core. To insulate a basement measuring 20 feet by 20 feet with 8 foot ceilings, you would need 640. The BASWA Systems are available in 3 system thicknesses, 30mm (1. Features of Calcium Silicate insulation board and pipe insulation are. 80 and a CAC panel rating per ASTM E1414 and E413 of 35. In this series of articles, we compare spray foam insulation to mineral wool, cellulose, foam board, and other types of insulation, to help homeowners get the information they need to make a decision on what is right for their home. This chamber usually has all hard concrete surfaces. 5/8 in gypsum board. Asbestos, sprayed 25 mm. Powerful, yet flexible and lightweight, the ENERWRAP MA 960 performance stone wool blanket (wrap) insulation is designed for high temperature, moisture intense industrial surfaces. Sound moves through material and through the air. Most acoustic fiberglass has a density of 1. Bradford Fibertex Rockwool Partition Batts have an NRC of 0. Thermafiber® SAFB™ is available formaldehyde-free which is especially appropriate for applications in education, healthcare, and other institutions committed to indoor air quality. Helping improve acoustics in open-plan offices and other commercial interiors, ROCKFON enhances the high sound absorbing performance of Rockfon® Sonar™ stone wool ceiling panels to achieve Noise Reduction Coefficients (NRC) as high as 0. Fire Safe Properties. Grab a piece of fiberglass insulation and touch a match to it. A higher number indicates more absorption. 0 (perfectly absorptive material). No Insulation 40. PVC absorptive sound barrier wall system with acoustical mineral wool Noise Reduction Coefficient (NRC) rating of 0. 18”), 40mm (1. Membrane covered large span composite roof panel up to 15 m long with IPN core insulation (PIR) 80 mm or 100 mm thick. Mineral Wool Insulation in 6 pounds per unit density. Using Deflector and diffuser mini panels you can mount the to the foams array. Rock Wool Insulation. Hang these insulation sound boards behind drywall or anywhere you need a noise solution. Easy to cut and not itchy. Easy to use, adheres easy, cleanup easy. Patented Reinforced Mineral Wool Core Benefits:: •Superior lowfrequency and overall absorption Class Afireprotection (Flame Spread:10,Smoke Developed Rating:95) •Durable cores thatwill lastin gymnasiums or high·impact environments •Tensile strength minimum of2,631 Ibs. The frame consists of anodized aluminum and its core is upholstered in a choice of 13 standard color-ways. This means it will. 62 per square foot as of 2013. It is intended as a quick screening tool to compare different wall or fl oor assemblies. Identification of the substance/mixture and of the company 1. 10 per square foot. These results were gathered from a test conducted by AIRO Acoustic Laboratories in accordance with BS 3638 and ISO 354, and by Riverbank Acoustical Laboratories in. NRC is based on an acoustic product's thickness and density. 05 NRC rating. 2 ½ in mineral wool in the wall cavity 4. Rock wool was discovered on the islands of Hawaii, where it occurs naturally as a by-product of volcanic activity at the beginning of the 20th century. AKINCO Acoustic Wood Wool is an environment-friendly, recyclable material made from wood wool, cement and water. Density: Mineral wool insulation has superior sound-deadening properties. ROCKWOOL Group. it is also one of the only foams that will not burn and has a class A1 fire rating. Fiberglass insulation in interior walls and floors/ceilings can reduce sound between spaces by 5 to 15 decibels. 1 Product identifier ROCKWOOL® stone wool insulation 1. Mechanical Solutions Reference Guide PDF | 3. NRC Rating The Noise Reduction Coefficient is a value that indicates how much sound a material absorbs (on a scale of 0 to 1). Rock wool Slabs are designed for a wide range of applications, at both high and low service temperatures. 93 , αw = 0. * Mail-in Rebate is in the form of merchandise credit check, valid in-store only. The core of NRC's performance and success is the knowledge. Report to moderator Logged. Roxul Rockwool batts are 3. bag of Greenfiber low dust insulation. (RW) Rockwool batts FG 89 m RW (mm) NRC Research compared various Thickness of Mineral Wool Batts with 89mm Fiber Glass Batts in 406mm o. Mineral wool will increase the length of time that a wood-framed house will stand during a fire. Simply described, NRC ratings can be seen as a percentage of sound coming in contact with a sound absorption material and subsequently not being reflected back into the room. steel-framed floor assemblies typically include stone wool insulation to improve sound transmission which may have the added benefit of improving the fire resistance rating of some assemblies. conducted technical reviews, and reviewed contract submittals for compliance to all technical requirements. Performance & Productivity Benefi ts:. L Ratings may be given for both ambient and elevated temperatures. Whether to choose foam insulation or fiberglass insulation for your soundproofing project is a common question, and perhaps the answer is surprising. Rock wool was discovered on the islands of Hawaii, where it occurs naturally as a by-product of volcanic activity at the beginning of the 20th century. 3 of the IRC, the minimum R-value of the vertical insulation at the perimeter of the slab is R-6. Ceiling Protection Panel Connection Floor Topping Load Rating Fire Resistance Achieved (Hours) Source Testing Lab 3-ply CLT (114mm4. Made from bonded glass fibres. MF QT Acoustical Wall Panel Kingspan’s MF QT acoustical panel is available for applications requiring sound absorption and reduction. International Building Code requires 50 STC between adjacent dwelling units. This low-VOC panel ensures excellent noise reduction and sound blocking with 0. This article’s intent is to present a scientific examination of the benefits of using each. DuPree Office of Noise Control, California Department of Health Services Berkeley, California 94704 Introduction building codes. CertainTeed Acoustic Performance - Powered by Ceros wc. Nuclear Regulatory Commission, Reg. The fire ratings in these floors are higher than usual and typically incorporate fire-rated ceilings or have fire corridor systems. * Roxul’s AFB™ is classiied as mineral wool. IKING INDUSTRIAL GROUP CO. On d\ue9crit ici deux (2) essais de r\ue9sistance au feu de murs ext\ue9rieurs \ue0 rev\ueatement de t\uf4le d?acier, non porteurs, r\ue9alis\ue9s en conformit\ue9 avec la m\ue9thode d?essai de la norme CAN4-S101-M89. The products receive ratings on a scale of 0 to 1 corresponding to the percentage of frequencies they can muffle. Mineral wool will stand up to temperatures that will reduce fiberglass to a puddle of molten glass. It's density compared to other types of in-wall insulation make it good at reducing sound transmission through it compared to other types of batt insulation. studies have proven that stone or mineral wool insulation’s provide a 54% increase in overall fire resistance rating compared to non-insulated assemblies. An NRC of 1 means that the product absorbs all sound. Unlike ATS, who actually didn’t state the NRC rating of the first product I’ve reviewed, Acoustimac specified that this panel has a. Filter Products By. The fibers are bonded and formed into flexible batts. BAND CENTER FREQ. The Armourcoat Acoustic® Plaster System achieved BS EN ISO 11654 'NRC' ratings from 0. An NRC between. 40* Superior low frequency and overall absorption Class A fire protection (Flame Spread:10, Smoke Developed Rating:95) Durable cores that will last in gymnasiums or high-impact environments Tensile strength minimum of 2,631 lbs. • New products entered the market, some based on claims they had none of the health problems associated with glasswool and rockwool. Acoustic mineral wool false ceiling boards distribution AMC-001 - HUAXIN Products Made In China, China Trading Company. the sprinkler system was added to decrease the fire rating of an interior wall by one hour (Table 601, Footnote e). A wetted, mineral wool-free pulp composition suitable for making acoustical tiles comprising at least about 10% by weight on a dry solids basis of expanded perlite, at least about 5% by weight on a dry solids basis of a starch gel binder, at least about 35% by weight on a dry solids basis of an inorganic mineral filler selected from the group consisting of calcium sulfate. The batts are perfect for filling the floor structure before laying the subflooring but are also commonly used as bass traps, and for recording studios or home theaters. BASWA Phon Acoustical Plaster System provides the following NRC Ratings:30mm system 0. Mineral wool will increase the length of time that a wood-framed house will stand during a fire. 1 hour interior side only fire rating to ULC Fire Resistance Directory W605. Usually these materials are easiest to source in 2” thick slabs. 50 = 50% absorbtion. Base Board: Semi-rigid stone wool insulation Maximum Service Temperature (per ASTM C612) 1200°F. For example 0. • Easy Installation: SilentFiber™ Mineral Wool Boards are a great choice for custom installations or DIY acoustics. nationalgypsum. This allows for tuning of the NRC (noise reflection coeficantlcy) of the foam panel itself and in turn the Reverberation Time of the enviroment it has been installed in. The fire ratings in these floors are higher than usual and typically incorporate fire-rated ceilings or have fire corridor systems. Roxul's Rockwool is very similar to Owens Corning 705 but is much cheaper. The Armourcoat Acoustic® Plaster System achieved BS EN ISO 11654 'NRC' ratings from 0. Nuclear Regulatory Commission, Reg. Glass wool can be used in internal partitions in addition to roof or wall. An NRC of 1 means that the product absorbs all sound. When we're soundproofing a partition (wall or ceiling) we'd like to introduce absorption in the otherwise hollow wall or ceiling cavities. The wall feature can be installed in 9 different pattern options that can be customized based on the client’s needs. Mineral wool insulation for the same wall runs about $1 to $1. Applic Ations. Roofs must have a deck of at least 15/32″ wood structural. Rock wool rated at R-15 and designed to fit a 4-inch wall costs $0. Mineral Wool Insulation in 6lbs per unit ensity. with 1-5/8” (41 mm) cement coated nails spaced 7” (178. Mineral wool insulation, sometimes called rock wool insulation, isn't a new insulation product, but it is gaining grown here in the US. However, this method is not as accurate as Sound Absorption Rating, αw, since it will not show performance extremes, like performance at extremely low or extremely high frequencies. Mineral wool insulation materials from Rockwool are of the premium quality. A NRC is an average rating of how much sound an acoustic product can absorb. PRODUCT DESCRIPTION. An acoustic product with a. Approximately 72 square feet of material is rested on the floor of a reverberation chamber. 7mm thickness or Steel (Thickness as per the Engineers request). 15 Seems there is alot of conflicting info on what works and what doesnt, what numbers are important or not. BASWA Phon Acoustical Plaster System provides the following NRC Ratings: ‍ – 30mm system 0. -18 THERMAL CONDUCTIVITY Mean Temperature (oc) 82 182 282 382 200 400 600 0. com TESTING PER ASTM C 423 (NRC DATA) NRC- ABSORPTION COEFFICIENTS 1/3 OCT. Features of Calcium Silicate insulation board and pipe insulation are. Rock wool Slabs are designed for a wide range of applications, at both high and low service temperatures. ROXUL® stone wool insulation products have a propensity for high acoustical performance. com is the only company that can actually rent sound booths on a weekly basis. The thickness and density of a product are two factors in calculating an NRC value. 14th Floor, Chiswick Tower 389 Chiswick High Road London W4 4AL. – Todd Wilcox Jan 30 '18 at 14:26. , LTD, is a professional building insulation material supplier and manufacturer in China. Ease of Installation - Cuts Easily & Friction Fits. There are many ways to. While generally, equal thicknesses of R-15 will give you more insulation than R-11, air leaks may all but eliminate this relationship. ROCKWOOL Limited 1 T CCORC W COO RLO O 45321 RC 1. ROCKWOOL stone wool products are non-combustible with a melting point approximately 1000°C. BUILDINGS ROCKWOOL® pRODUCtSHEEt 710 347-05/15_V2 (EN) Packaging and storage. What is Noise Reduction Coefficient (NRC)? In sound engineering, while we talk about the soundproofing of any area you definitely heard about the sound absorption. fi ber, ceramic fi ber or mineral wool. is part of ROCKWOOL International, the largest producer of stone wool insulation, which is made from natural basalt rock and recycled material. With the Ecophon Materials Calculation Tool it's easy to find the right components and calculate what you need for your installation. Rockwool can achieve a NRC of 1,0 to provide excellent acoustical properties. Discover how Benny's Transmission reinforced the integrity of their roofing system by upgrading their roof with MBCI's Retro-R ® metal panels. These compounds have a special property that allows them to convert sound energy into heat, making the sound stop all of a sudden. Glass wool insulation is a popular form of insulation roll that works to insulate by trapping gases in the small pockets created when spinning glass fibres into a roll, sheet or batt. 5 of the IBC permits asymmetrically tested fire. The BASWA Systems are available in 3 system thicknesses, 30mm (1. The table below gives some NRC ratings for common building materials. Nice as Acoustic insulation or as a soundproofing subject material Value effective and Very Top NRC Rating, higher than Owens Corning 703 Water repelling - hydrophobic- Magnificence A hearth rating Rigid Boards, very best for making acoustic panels and bass traps. This non-combustible, lightweight product has excellent acoustical dampening properties and is dimensionally stable which makes it ideal. Thermal and hygrothermal performance had to be verified as well as demanding levels of acoustic performance in respect to STC rating, rain noise attenuation and NRC values. Nails or screws or glue; Soundproofing materials like rock wool, mineral wool, fiberglass, etc. ** Provisions for lot testing may be requried, consult manufacturer. The Forums. Fine Fissured High NRC/High CAC Item 4121s. These results were gathered from a test conducted by AIRO Acoustic Laboratories in accordance with BS 3638 and ISO 354, and by Riverbank Acoustical Laboratories in. NRC values commonly range from 0 (reflects all sound) to 1 (absorbs all sound), but it's possible to have an NRC above 1, depending on the material's shape or surface area. 7 and an STC rating around 37 on average. Hz TESTING PER ASTM E 336 (STC DATA) NRC Data Mounting Method: A SAMPLE 125* 250 500 1000 2000 4000* NRC 2. ROCKWOOL SAFE‘n’SOUND is a stone wool insulation product that can reduce noise and sound absorption in residential wood and steel stud. Floors must have a subfloor of at least 15/32″ wood structural panels or 11/16″ T&G. com TESTING PER ASTM C 423 (NRC DATA) NRC- ABSORPTION COEFFICIENTS 1/3 OCT. STC and noise reduction coefficient (NRC) are important elements of sound control. Base Board: Semi-rigid stone wool insulation Maximum Service Temperature (per ASTM C612) 1200°F. 65 at 1” thickness and 1. ft breaking load •Compressive resistance of 547 psfat25% compression. Mineral Wool Insulation in 6 pounds per unit density. Sound Insulation is the ability of building elements or structures to reduce sound transmission and is measured over a range of frequencies, normally 100 ~ 3150 Hz. The maximum service temperature of stone wool insulation when tested to ASTM C 411 is 1200 ºF (650 ºC), compared to fiberglass which is limited to a maximum service temperature of 450 ºF (232 ºC). The walls of most of the domestic buildings are constructed of Drywall (Sheetrock/Gypsum Board) that is firmly attached to both sides of a wood or metal stud frame. A NRC is an average rating of how much sound an acoustic product can absorb. Mineral wool originated in Germany in 1871 and was one of the first insulation materials to be commercially produced. There are many ways to. (b) In theory a 100% absorbent room, the critical distance would be at the walls. It looks like the densest mineral wool isn't even available in the largest thickness, and 6" of the least dense wool (CW 4) has better absorption than 4" of the most dense wool (CW 8). The wall feature can be installed in 9 different pattern options that can be customized based on the client’s needs. ROCKWOOL Safe 'n' Sound 3 in. AKINCO Acoustic Wood Wool is an environment-friendly, recyclable material made from wood wool, cement and water. NoiseReducer products are designed for use in commercial and residential wall and ceiling assemblies to effectively reduce transmission of airborne sound and provide thermal insulation. 2x3 wood studs at 16 in o. Ceilings should be used for sound absorption and not for blocking sound between rooms. Fibers are specially oriented to achieve high compressive strength, to suit this application. Free Room Acoustics Analysis!. 4, Fire resistance: Fire prevention is the most important problems of modern public buildings, high-rise building design, mineral wool board is non-combustible mineral wool as the main raw material, in case of fire will not burn, so as to effectively prevent the spread of fire , it is the most ideal fireproof ceiling material. 95 ASTM C423 ROCKWOOL Technical Insulation offers reinforced foil facing and a wide range of dimensions and thicknesses. Tel: 020 8222 7457 Fax: 020 8222 7458 [email protected] 125hz 250hz 500hz 1000hz 2000hz 4000hz NRC 0. "Batt", "roll" or "blanket" insulation are the most common types of home insulation found throughout the United States. The waves (reflect wave p r) reflect the material surface and the speaker repeatedly, and a standing wave field is established in the tube [4]. Because our sound booths are truly mobile sound enclosures, that can be easily shipped pretty much anywhere by a common carrier, and do not require any special tools for assembly, VocalBoothToGo. 8) which makes this a very popular product in both the acoustical field as well as the industrial insulation industry. SOUNDSTOP sound deadening fiberboard is a high-quality, cost-effective solution to airborne sound reduction. Mechanical Solutions Reference Guide PDF | 3. ) Like a sponge absorbs water, an acoustic product absorbs sound and the NRC tells us just how much sound those products can soak up. Saint-Gobain Ecophon manufactures and sells acoustic ceilings and wall panels that contribute to a good indoor environment. Use Mineral Wool to build broadband acoustic panels and bass traps. Using the same Rockwool core as the Flat Panels, Perdue Acoustics' Baffles provide excellent sound absorption (NRC of 1,80 for the 2" Baffle) in the upper ceiling area, fitting perfectly between high ceiling beams or joists. Phone - 1-855-376-5060 • Email - [email protected] Installation A : 50mm rockwool insulation Installation B : 50mm rockwool insulation plus 200mm cavity 0. STC and noise reduction coefficient (NRC) are important elements of sound control. Owens Corning Fiberglass® Batts. 5 of the IBC permits asymmetrically tested fire. 60, it would have about 40% reflections off of the material. The simplest and cheapest roof insulation is the classic cold loft option. Despite being a multinational company, Knauf continues to be run as a typical family business and has built a name as one of the most respected companies in insulation. Two (2) Inch Regular Tailored Edge Fabric Finish Baffles: Mineral wool core with fiberglass mat front and back; square edges; two (2) inches thick. Kraft and foil faced batts have flanges to allow for stapling. Made from bonded glass fibres. Concrete masonry offers excellent noise control in two ways. Sound Proof Material. Ure-K is a spray-applied 15-minute Thermal Barrier approved to go over exposed applications of polyurethane foam in existing buildings and new construction projects as a combination system to meet mandatory code requirements. 0 for fiberglass. "Batt", "roll" or "blanket" insulation are the most common types of home insulation found throughout the United States. The Broadway panel is made from high density 6lb glass wool while most foam panels are made using low density 1. Micore® 300 Mineral Fiber Board: Offers outstanding resilience, superior machinability, high "k" factor, heavy density and is the. NRC is normally expressed as a number between 0 and 1, signifying the percentage of sound absorbed. MF QT Acoustical Wall Panel Kingspan’s MF QT acoustical panel is available for applications requiring sound absorption and reduction. Idea for under deck Insulation, over the false ceiling and for Ducting. com TESTING PER ASTM C 423 (NRC DATA) NRC- ABSORPTION COEFFICIENTS 1/3 OCT. CompositionManufactured from biosoluble mineral wool, organic binders and natural fillers Grid Compatibility See grid compatibility matrix below Colour White Light Reflection Approx. This is the same material that is used to fireproof steel members in commercial construction. The Broadway panel is made from high density 6lb glass wool while most foam panels are made using low density 1. This is more conceptual than physically achievable: even very thick concrete walls will attenuate sound and may. The NRC is a single-number index determined in a lab test and used for rating how sound absorptive a material is. MinWool-1200 Industrial Board is rated as noncombustible in accordance with ASTM E136 and CAN4-S114-M. Identification of the substance/mixture and of the company 1. Phone - 1-855-376-5060 • Email - [email protected] ROCKWOOL Safe 'n' Sound 3 in. I have 1 complete and one half box (1. National Research reports Q3 results. I have seen anywhere from 20% to 3 times more than the cost of other products for the same R-value. 5 Item Unit AS-DD AS-DD Plus Standard Fire Performance NRC 0. Fire Protection. The most widely specified density for metal roof insulation is 24kg/m3 in 50mm thickness. classrooms have a speech intelligibility rating of 75 percent or less. Mineral wool insulation provides superior NRC values (NRC of 1. ROXUL® stone wool insulation products have a propensity for high acoustical performance. com is the only company that can actually rent sound booths on a weekly basis. Great as Acoustic insulation or as a soundproofing material. The faced insulation has a flame spread rating of 25 and a smoke developed rating of 5. 8 Noise Reduction Coe˜ icient (NRC) 8. A: NRC means Noise Reduction Coefficient. In a matter of an hour or two, an installation specialist can blow a thick blanket of loose insulation across the floor of the attic using a single hose run up through the attic hatch. The BIBS system uses best-in-class product components and partners with leading manufacturers of insulation products, including CertainTeed, Johns Manville and Knauf. 0,Acoustic Ceiling Tiles,Acoustic Ceiling Board,Acoustical Ceiling Panel from Supplier or Manufacturer-Shandong Huamei Building Materials Co. Measurement set-up 1 1: Vinyl wall covering Measurement set-up 2 1: Vinyl wall covering 2: Gypsum plasterboard, t = 12,5 mm 3: Mineral wool Measurement set-up 3 1: Vinyl wall covering 3: Mineral wool. 57”), and 70mm (2. Mineral Wool Insulation in 8 pounds per cubic foot density. ROCKWOOL SAFE n SOUND R- Stone Wool Batt Insulation with Sound Barrier (15. It is an open-fibrous material that when sound comes in to contact with, turns that sound energy into heat, essentially reducing the. Bradford Fibertex 450 is manufactured by spinning a molten mixture of natural rock and recycled products into fine wool like fibres which are bonded together. 7/8” Mars™ High-NRC (85/35) and Mars™ Healthcare High-NRC (85/35) Acoustical Ceiling Panels According to ISO 14025, ISO 21930:2007 1. 85 is preferred for an 8' ceiling An NRC of. False ceiling composed of strip MLX C ceiling, closed gap, made of aluminium 0. Both of these insulation products carry a 3. Another side benefit: fiberglass and rock wool are fire resistant and do not give off deadly fumes when heated. It provides good insulation that is not affected by moisture and is not a food source for pests. R30 is higher STC due to its increased density. Mineral wool insulation, sometimes called rock wool insulation, isn't a new insulation product, but it is gaining grown here in the US. 7 and an STC rating around 37 on average. Solid soundproofing qualities, high NRC rating. Floor/Ceiling Assemblies Isolate sound. Brickwork, painted. 95 NRC rating means that 95% of sound in the space is absorbed, while the other 5% is reflected. These are. The CertainTeed Optima® system of fiberglass blow-in insulation is a thermal and acoustical insulation for sidewalls, cathedral ceilings, and other closed-cavity applications. However, this method is not as accurate as Sound Absorption Rating, αw, since it will not show performance extremes, like performance at extremely low or extremely high frequencies. Approval Type US Coast Guard Certificate of Approval. These boards also improve signal-to-noise ratio in any space while achieving NRC ratings up to 1. Roofs must have a deck of at least 15/32″ wood structural. A complete line of Owens Corning Batt Insulation available in unfaced, kraft or foil batts. Floors must have a subfloor of at least 15/32″ wood structural panels or 11/16″ T&G. Rockwool in its lifetime (more than 50 years) can save more than 100 times the energy used for its production. The ROXUL Mineral-Rockwool ® family of products is available in various densities to support different. Unlike ATS, who actually didn’t state the NRC rating of the first product I’ve reviewed, Acoustimac specified that this panel has a. Sound Transmission Class (STC) is a rating of how well a building partition attenuates airborne sound. The BASWA Systems are available in 3 system thicknesses, 30mm (1. •Type VA is protected construction and requires a 1hr rating for all structural elements with some exceptions for roofs. The product is manufactured in thicknesses from 1" to 6", and comes in standard metal frame. This non-combustible, lightweight product has excellent acoustical dampening properties and is dimensionally stable which makes it ideal. We did some research, talked to installers and filled a few walls with the stuff. Approximately 72 square feet of material is rested on the floor of a reverberation chamber. The calculations are for the point source model of sound propagation (6dB per doubling of distance). 93: Therefore, the coefficient for this material combination at 1 kHz is 0. Adjacent pieces of the MLV were overlapped 6 inches and then taped on one side only to ensure they stayed in place. NRC Rating The Noise Reduction Coefficient is a value that indicates how much sound a material absorbs (on a scale of 0 to 1). Rockboard consists of strong, fire-resistant mineral wool insulation, which provides one of the best soundproofing for walls. CertainTeed insulation helps reduce exterior noise and is also great for interior walls — helping quiet room-to-room sounds. Both fiberglass and stone wool insulation have merit, promote fire protection and sustainability, and offer value to architects, contractors, and property owners alike. 5, would signify 50% of sound was absorbed. Bradford Fibertex 450 Rockwool is a robust medium density insulation product with excellent insulation and fire resistance properties, designed for continuous operation up to 450 o C. Looking for AURALEX Wall Insulation, 2 ft. 003 CFM/ft² of Panel Area at 6. , NJ | Read More >> Insulating a 2×4 wall with Foam it Green is the quickest and easiest way to meet code standards. When we’re soundproofing a partition (wall or ceiling) we’d like to introduce absorption in the otherwise hollow wall or ceiling cavities. Fiber glass insulation and mineral wool insulation - are naturally non-combustible 11. 95 and Class A Thermalrock S60 and 75 mm thickness - NRC = 1. 16mm USG Boral FireStop®. ROXUL Safe n Silent Pro is a stone wool insulation product for use in interior wall partitions of residential wood and steel stud construction where superior fire resistance and acoustical performance are required. Important Elements of Sound Control. 62 per square foot as of 2013. 87% FIRE PERFORMANCE Reaction to Fire A2-s1, d0 (EN13501-1) ACOUSTIC PERFORMANCE Room to Room Airborne 29dB Sound Reduction Sound Absorption α w = 0. Mineral wool vs fiber glassComparative tests conducted at nationally recognized acoustical laboratories have shown that increasing the density of the insulation while maintaining a constant thickness does not have a significant effect on the STC rating of the construction. ROCKWOOL China 4 ROCKWOOL China 5 Indoor noise transfer Standard Size Code Thickness (mm) Size (mm) Acoustic DD/DD Plus 50~150 1200*600 Technical Parameters ≤0. The right-hand column shows the results of acoustical tests done on these ROXUL AFB wall systems at the internationally-recognized Riverband Acoustical Laboratories. 75”); each having different sound absorption characteristics. DuPree Office of Noise Control, California Department of Health Services Berkeley, California 94704 Introduction building codes. 90, glass fiber poly acoustical backers are a great option for those seeking an even higher acoustical absorption. For an NRC value of up to 0. This is the same material that is used to fireproof steel members in commercial construction. Lost energy is lost money and lost efficiency. The BIBS system uses best-in-class product components and partners with leading manufacturers of insulation products, including CertainTeed, Johns Manville and Knauf. , NJ | Read More >> Insulating a 2×4 wall with Foam it Green is the quickest and easiest way to meet code standards. NRC ratings can range from 0. Plus: Excellent sound absorption, low cost. ROCKWOOLTM PRODUCTSHEET 100 309IN – 02/15_V1 (EN) ThermalRock S TM (Slab) ROCKWOOL stone wool products are made of basalt, a volcanic stone. 125 230 500 1000 2000 4000 NRC. Having stated that, the use of any fiberglass insulation can increase the partition assembly STC rating 4-10 points and we have isles full of product that will accomplish a higher rating. However, this method is not as accurate as Sound Absorption Rating, αw, since it will not show performance extremes, like performance at extremely low or extremely high frequencies. – Todd Wilcox Jan 30 '18 at 14:26. What is the difference between Rockwool and Owens Corning EcoTouch This entry was posted on February 9, 2016 by Johnpaul. The NRC is. 5/8 in gypsum board. Bradford Fibertex 450 Rockwool is a robust medium density insulation product with excellent insulation and fire resistance properties, designed for continuous operation up to 450 o C. These properties can assist patrons, facility personnel and emergency responders with. 15 High noise and reverberation levels hinder speech intelligibility, causing reduced understanding and reduced learning. Imported from USA. 3 of the IRC, the minimum R-value of the vertical insulation at the perimeter of the slab is R-6. Rockwool comes in various density and various thickness and can be delivered as per customer requirement Used in Duct insulation Generator canopy insulation soundproof room insulation wall insulation recording studio insulation. acoustically functional. Balanced Acoustical Design:. This test will need to be repeated for different frequencies. Products Thermafiber SAFB FF by Owens Corning Batts are available in a range of thicknesses from 1. is part of ROCKWOOL International, the largest producer of stone wool insulation, which is made from natural basalt rock and recycled material. Brickwork, painted. There are two physical characteristics that support this result. It is intended as a quick screening tool to compare different wall or fl oor assemblies. See the proper procedures for handling insulation substances. Non-load-bearing partitions with a fire resistance rating of 2 hours or less. Please contact us for further information. Each unit of mineral wool insulation are 8lbs of density, making it very cost-effective with a very high NRC rating. For magnesia-asbestos insulation at mean temperatures ranging from 100°F to 400°F the K-value (thermal. IPC Industries is a proud supplier of Rockwool insulation products to the sub-saharan african markets. 1 Please contact ROCKWOOL for STC ratings on tested wall assemblies ASTM C423 ASTM E90 Fire Rated Designs ULC Classification Code: BZJZC UL Classification Code: BZJZ 8024 Esquesing Line, Milton, ON L9T 6W3 Tel: 800-265-6878 • Fax: 800-991-0110 rockwool. An NRC of 0 indicates perfect reflection; an NRC of 1 indicates perfect absorption. Roofs must have a deck of at least 15/32″ wood structural. Lost energy is lost money and lost efficiency. Fiberglass insulation in interior walls and floors/ceilings can reduce sound between spaces by 5 to 15 decibels. ROCKWOOL Group. 3 of the IRC, the minimum R-value of the vertical insulation at the perimeter of the slab is R-6. Batts can improve wall assembly STC ratings by up to 10dB. Roxul's Rockwool is very similar to Owens Corning 705 but is much cheaper. The Roll is economical and easier to install within partitions, floors, walls and roofs. What this means: STC measures/rates how well a partition stops airborne sound transmission. Single figure rating : α. NRC ignores performance at frequencies below 250 Hz, or above 2KHz. Only Rock wool products among all Mineral wool (rock wool / Glass wool /Slag wool) products are recommended for FIRE Hour Rating. NRC values commonly range from 0 (reflects all sound) to 1 (absorbs all sound), but it's possible to have an NRC above 1, depending on the material's shape or surface area. An NRC of 1 means that the product absorbs all sound. Installation A : 50mm rockwool insulation Installation B : 50mm rockwool insulation plus 200mm cavity 0. The calculations are for the point source model of sound propagation (6dB per doubling of distance). The higher the NRC rating the more sound is absorbed by the batt. Rockwool is the leading manufacturer of mineral wool in the world and boast the lowest shot content in the market, therefor ensuring that you are paying for insulation and not metal balls. Mold Resistant. These materials are sold in a bundle with 12 panels per case. As I am sure you already know, insulation is one of the key factors in creating a pleasant, energy efficient and comfortable home which also has more value than an uninsulated house. In addition, utilizing full-height walls or plenum barriers to achieve a good STC blocking rating of 40, a better STC rating of 45, or best blocking rating of STC 50. Nails or screws or glue; Soundproofing materials like rock wool, mineral wool, fiberglass, etc. National Research Council of Canada, Summary Report, for Consortium on Gypsum Walls: Sound Transmission Results, Internal report IRC-IR-693. The best soundproofing projects start from within. China Nrc 0. These beneits are only available in stone iber based products. 440 SoundBarrier ® controls sound in floors, walls and ceilings. 75, Rockfon acoustical backer is a smooth, black felt that is applied to the back of the panel at time of manufacture. These panels are sold individually, and they weigh about the same as the first ATS panels I mentioned. This acoustic Mineral Wool Insulation comes in either 4lbs or 8lbs per unit density. MINERAL WOOL INSULATIONS INDUSTRIAL have a flame spread rating of 5 and a smoke developed rating of 0. , LTD, is a professional building insulation material supplier and manufacturer in China. • New products entered the market, some based on claims they had none of the health problems associated with glasswool and rockwool. Thermal Insulating Wool Insulation (TIW) d. 50 PCF CB 225 2. Performance: The performance of sound absorbing Products can be measured and expressed as a Noise Reduction Coefficient (NRC). It looks like the densest mineral wool isn't even available in the largest thickness, and 6" of the least dense wool (CW 4) has better absorption than 4" of the most dense wool (CW 8). High-insulating wall products, as measured by Sound Transmission Class (STC), should be used to for blocking noise at an STC 45 or higher. Measurements are done according to a standard test method such as ASTM C423 or ISO. Tissue and Rigid Boards etc. H ow wonderful it would be if effective soundproofing came in the form of a paint! It would be a true dream product, easily solving many noise problems. The higher the NRC rating the more sound is absorbed by the batt. Everything in acoustics, particularly. Even then, differences of 1-2 points STC can occur for the same assembly in the same. The air leaks may undo the advantages of R-15 over R-11. STC relates to sound. The panels are available 100mm, 150mm, 200mm & 300mm width and the maxi­mum length is 6 mtr. 55 and it comes in 15 other colors. Appearance. (76 mm), NRC 0. NRC's success lies with the talented men and women that give it life. Rockwool (Roxul) ProRox-Enerwrap MA 960 Industrial Insulation Blanket ENERWRAP MA 960 is a flexible faced industrial blanket made of stone wool insulation. steel-framed floor assemblies typically include stone wool insulation to improve sound transmission which may have the added benefit of improving the fire resistance rating of some assemblies. 50 = 50% absorbtion. -18 THERMAL CONDUCTIVITY Mean Temperature (oc) 82 182 282 382 200 400 600 0. Blow-in insulation offers a much faster way to significantly improve your attic insulation. It has a density of 1. 1 Please contact ROCKWOOL for STC ratings on tested wall assemblies ASTM C423 ASTM E90 Fire Rated Designs ULC Classification Code: BZJZC UL Classification Code: BZJZ 8024 Esquesing Line, Milton, ON L9T 6W3 Tel: 800-265-6878 • Fax: 800-991-0110 rockwool. Idea for under deck Insulation, over the false ceiling and for Ducting. 94% Open Area Materials & Colours Veneer/ Melamine/ Laminate Sound Absorption Perforated Acoustic Absorption Panel WHITE OAK MAPLE ASH CHERRY. ROCKWOOL Safe ‘n’ Silent Pro is nature-based insulation made of volcanic stone, a safe and sustainable material that continues to perform and lasts throughout the lifetime of the building. 5 of the IBC permits asymmetrically tested fire. Concrete masonry walls are often used for their ability to isolate and dissipate noise. ROXUL® stone wool insulation products have a propensity for high acoustical performance. The National Federation of Roofing Contractors Limited (NFRC) is the UK's largest roofing trade association representing over 70% of the roofing industry. The amount of acoustic absorption required in building standards, guidelines, and rating systems is defined in one of two ways - either by the minimum Noise Reduction Coefficient (NRC) of the suspended acoustic ceiling system or by the maximum reverberation time (RT) inside the room. ROCKWOOL SAFE‘n’SOUND is a stone wool insulation product that can reduce noise and sound absorption in residential wood and steel stud. The faced insulation has a flame spread rating of 25 and a smoke developed rating of 5. The overall NRC rating is the calculated average of frequencies 250Hz, 500Hz, 1000Hz, and 2000Hz, which is then rounded to the nearest multiple of 0. Ure-K is a spray-applied 15-minute Thermal Barrier approved to go over exposed applications of polyurethane foam in existing buildings and new construction projects as a combination system to meet mandatory code requirements. #N#Staggered stud wall construction with 1 layer of 16mm (5/8") Plasterboard on studs of 95x35mm (4 x 11/2. reducing sound transmission. In other words the higher the NRC, the better the product is at soaking up the sound. Tissue and Rigid Boards etc. For more information, please contact your local representatives. 5 lb/ft³, 3 lb/ft³ or 6 lb/ft³ and an NRC rating between 0. The lower the R-value, the less it blocks heat. A NRC of 0. This article's intent is to present a scientific examination of the benefits of using each. The federally mandated test (ASTM C423) is standardized to cover frequencies between 125Hz and. The old name for the material he carries are Rockwool 231 (SL 940) and Rockwool 233 (SL 960) The Rockwool 231 and Rockwool 233 are probably the more common names for the products he carries. mineral wool. Retrofit Case Study. Density and airflow resistivity for samples of absorptive material. , 92mm Steel Stud Wall Assemblies with 5/8” Type x (I-II). com Issued 01-01-18 Supersedes 08-23-17. Brickwork, unpainted.