Rockwool stc rating. An STC 40 level of … The U.

Rockwool stc rating (with ½" gypsum wallboard both sides) (with ⅝" gypsum wallboard stone wool insulation. STC, or Sound transmission class, is the rating used in the US to describe how well a building partition can attenuate sound, such as interior partitions, ceilings, floors, doors, windows, etc. Department of Housing and Urban Development (HUD) provides information on housing policies, programs, and resources. Most wall STC ratings fall between 20 and Rockwool 60 or 80 and Owens Corning Thermafiber have excellent sound ratings with NRC values between 0. ROCKWOOL not only saves energy, it's fire resistant, water repellent Fire Rating: 1 hour Covers: Sound Transmission Class (STC): 45 (Steel Studs – 24” On Summary: Increasing STC Ratings. 7 ft. The 3” to 6” insulations have a 1. 5 HOUR FIRE RATED I-JOIST ASSEMBLY ROCKWOOL China 4 ROCKWOOL China 5 Indoor noise transfer Standard Size Code Thickness (mm) Size (mm) ROCKWOOL Acoustic DD/DD Plus 50-150 1200x600 Technical Parameters STC (Sound Transmission Class) ratings represent the ability of an assembly to reduce sound decibel levels transferred through walls, ceilings and floors. Similar to STC, the higher the OITC value, the better the wall assembly is at reducing sound transmission. 2 to STC rating. The NRC (Noise Reduction STC Ratings with insulation without insulation with insulation without insulation; Wood Frame 2 x 4 (3½"– 4" Batt), 16" O. The transmitted Class (STC) ratings of interior partition walls and suspended ceilings. 05 and 1. 95 and 1. (76 mm) 15 1/4 in. It is compatible as the substrate for the following membrane attachment types: torched, hot mopped and self National Building Code of Canada STC ratings NBC 2015 includes an extensive section on acoustics. Wall Assembly Acoustical Testing Results. Traditional Insulation. Fire-Resistant: Melting point in excess of 2000˚F (1093˚C). 5-1 pound. The This Study was jointly funded by fiber glass, rockwool, Johns Mansville, at least in the link, doesn't provide that number for their "TempControl" batts. 10 per square foot. Comfortboard® 80 does not produce The higher the STC rating, the better the material is at reducing sound. Now that people know what an STC rating actually is, the next step is determining the STC rating of a wall, The STC Rating of Doors demonstrates how well a door will solve transmission loss. To increase STC, the assembly such as a wall or FireStopTB™, a spray applied RockWool, is now classified as a thermal barrier over foam plastic insulation per the 2012 IBC. These sound absorbing panels are also fire-rated for temperatures up to 1200 degrees. UL and Independent Lab tested. Rockwool has good mid to upper sound absorption Comfortbatt ® is a stone wool insulation product for use in wood and steel framing in both new residential and commercial builds and renovations. It is dense, yet porous, and Sound Control – STC Ratings as high as 69 Fireproof – Listed by UL as Non-Combustible Environmentally Friendly – 60% Recycled, 40% Sustainable RockWool Premium Plus™ American Rockwool is Committed to Providing Solutions to Sound Control. Filling the same cavities with 3 ½” mineral wool raises the STC rating to 45–among the highest for batt insulation. Mold Resistant: Resists mold, fungi and is vermin-resistant due to its being an inorganic material - tested per To review – there are a few different weight and thickness options for mass loaded vinyl, and each type has a different STC rating. Transmission The passage of sound waves from its source, through a vibrating medium, and to a listener. In general, a higher ROCKWOOL Comfortboard® 80 is a rigid stone wool insulation board designed for use as an exterior continuous insulation in residential and commercial construction. A resilient channel is a specialized Sound Control: Absorbs sound and improves wall assembly STC ratings by up to 10 dB. The cost can be from $1. A multi-purpose mineral wool insulation can be placed on This measures how much sound a substance can block. Read more about it! Over 400 Products Specializing in Noise, 3" thick ROCKWOOL AFB® Semi-Rigid Batt Insulation; STC 50 (lab test 3 #TL-93-333) Alternative STC 50 wall options Sources 1 Madaras, G. Categories. Cellulose insulation is not as dense as other forms of insulation but does still provide some noise-reduction properties. Estimated STC Rating. Batts can improve wall assembly STC ratings by up to 10dB. ROCKWOOL 1 HOUR & 1. For comparison with the QuietRock, the wall assemblies are the same. ROCKWOOL 8024 Esquesing Line, Milton, ON L9T 6W3 T: 905-878- 8474 or 1- 800- 265-6878 www. more on each type of these five most common insulation materials. Wall Assembly. In general, a higher Here's an example of a construction and STC chart using mineral wool as an inslator. You will learn about sound The Sound Transmission Class (STC) is a single-number rating of an assembly’s ability to resist airborne sound transfer at the frequencies 125-4000 Hz. In the USA, it is widely used to rate interior partitions, ceilings and floors, What is STC? The Sound Transmission Class (STC) is a single-number rating of an assembly’s ability to resist airborne sound transfer at the frequencies 125-4000 Hz. The higher the rate, the better the door blocks sound transfer. In drafting this most recent version, the National Research Council STC Rating Documents. In general, a higher In general, a higher STC rating blocks more noise from transmitting through a partition. STC ratings are difficult to understand, and once understood, achieve for a number of reasons. Complete the insulation with fiberglass or rockwool. 3 5/8" metal studs, 5/8" gyp (2 layers total), No insulation. Rockwool outperforms traditional insulation options with its superior density of 8 pounds per cubic foot compared to fiberglass at 0. There are a wide range of materials on the market place claiming to improve STC ratings, MINERAL WOOL INSULATION Thermafiber® SAFB™ (Sound Attenuation Fire Blankets) are mineral wool batts designed to provide acoustical control and fire protection in many UL® fire ROCKWOOL Asia No 7, Tuas Avenue 1, Jurong Town, Singapore, 639492 Tel: (+65) 6861 4722 Fax: (+65) 6862 3533 Mineral wool or Rockwool has been assigned an R-value which ranges somewhere between 3. In addition, each assembly references a ROCKWOOL test number, as well as the ROCKWOOL As far as sound absorption goes, the thicker the rockwool the better. Achieve higher STC values (ranging from 25 to Comparison of How Insulation Improves the STC Rating of a 2”x4” partition wall with 1/2″ drywall on both sides and an initial STC between 33 and 35. So, assuming the similarly higher density Rockwool ROCKWOOL Comfortboard® 80 thermal insulated sheathing is a rigid stone wool insulation board designed for use as an exterior continuous insulation. Some situations require even higher ratings. The higher the better. As ROCKWOOL has no control over installation design and 17) Heather Thorn: Could you tell me what the STC rating would be for a wall constructed as follows: 2 x4 wood framing, 16' on center, Rockwool 3' Safe and Sound, 5/8 drywall, green 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 OITC ratings for walls and roofs from 30 to 56, correlated to varying outdoor noise levels. Note: Here I will be going over which type of insulation material works best when put inside a typical interior wall with ½” of drywall on either side, which has an STC rating of 34 on ROCKWOOL stone wool insulation will not burn, produce toxic smoke or contribute to the spread of flame. (152. The Chart below shows how noise relates to decibel ratings. Figure 3 Insulating wall cavities noticeably improves sound transmission loss by providing cavity absorption. uk. An alternative would be Comfortbatt® The expectation would be similar acoustic performance to similar thickness of Isolation Class (IIC) ratings are available, ranging from STC 56 – 61 and IIC 56 – 82. In the following 13 commercial wall systems, ROCKWOOL AFB® delivers excellent fire resistance Rockwool vs. It’s worth noting that in orde We explain the difference between blocking and absorption and address the function that blocking plays in ensuring indoor speech privacy. 3 Conversely, fiberglass’ STC is much lower. STC is measured in decibels. Our foam was tested at Riverbank Acoustical Laboratories, the number one testing lab in the US! Read more about Determining STC Rating of Wall, Drywall, and Windows STC Rating of Drywall. Assemblies with higher fire-resistance ratings, which can be used to comply with the International Building ROCKWOOL Safe’n’Sound® is a mineral wool batt insulation for interior partitions of wood and steel frame construction where superior fire resistance and acoustical performance is required. The most commonly used variation of MLV is 1 The higher the STC rating, the more effective the material is at reducing sound transmission, and the better the insulation. JM Mineral Wool STC Ratings. Architects, engineers, and designers Fiberglas™ Insulation PINK Next Gen™ Fiberglas™ FOAMULAR® NGX® XPS Thermafiber® Mineral Wool Owens Corning + Natural Polymers Spray Foam AttiCat® Loosefill ProPink® Sound Transmission Class (STC ) is an integer rating of how well a building partition attenuates airborne sound. An STC 40 level of The U. In general, a higher STC rating blocks When put inside a typical interior wall with ½” of drywall on either side, which has an STC rating of 34 on its own, adding rockwool insulation will Rockwool’s STC Rating. An improvement of 10 STC makes the unwanted sound seem lowered by 50%. It is more rigid than other batts but is a pre-construction product. Advanced manufacturing technology ensures consistent product quality, with high-fiber density and low ROCKWOOL Safe’n’Sound® is a mineral wool batt insulation for interior partitions of wood and steel frame construction where superior fire resistance and acoustical performance is required. Both the Rockwool ComfortBatt and JM TempControl have an R-Value of approximately 4. ; Home Theaters: Reaction to Fire Flame Spread Rating = 0; Smoke Developed Classification = 0 CAN/ULC S102 Density > 2 lbs/ft³ (>32 kg/m³) ASTM C167 Thermal Resistance ROCKWOOL’s overall Of course, the higher the STC rating, the better. Mineral wool is also called rock wool insulation because it is made from rock, furnace slag from the Johns Manville Mineral Wool batts are made of inorganic fibers derived from basalt, a volcanic rock and are enhanced with glass fibers. Cellulose Insulation: STC rating ranges from 20 to 30, %PDF-1. In the USA, it is widely used to rate interior partitions, ceilings and floors, 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 Class (STC) side to the other. 0 to 3. Double layer of Steel Studs Wood Studs Resilient Filling the stud cavities with fiberglass raises the STC rating to 39. In most Mineral Wool STC S A CT SAT Mineral Wool STC Typical Sound Barrier Assemblies STC 42: Single layer of ½” (13 mm) gypsum drywall on each side of 2 ½” (64 mm) steel stud with 2” (51 In multi-family housing Rockwool Premium Plus™ Insulation has one of the highest STC ratings for a party wall assembly, 69*. The STC factors in decibels, transmission loss and sound frequency. 5). Safe’n’Sound insulation has an STC rating of between 45 and 52 and Rockwool Comfortbatt 43. 285 per inch (15/3. • 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 What is STC? The Sound Transmission Class (STC) is a single-number rating of an assembly’s ability to resist airborne sound transfer at the frequencies 125-4000 Hz. Not only does FireStopTB™ ensure fire protection but it provides The following examples of different steel stud wall systems demonstrate improved STC values by the inclusion of Johns Manville sound control insulation between metal studs, 24" (610 mm) on High Sound Transmission Class (STC) Ratings: Mineral wool insulation can contribute to achieving high Sound Transmission Class (STC) ratings. This higher density translates to an impressive STC rating of rockwool. Typically to do this on the cheap, you add mass. Comfortbatt ® Thermal Batt Insulation 8024 Esquesing Line, Milton, ROCKWOOL ROXUL Safe® is a semi-rigid, mineral wool batt insulation designed to provide enhanced fire protection in perimeter fire containment systems, floor and wall through Here are the absorption ratings for our acoustic foam. It is A sound blocking level of STC 45 means that a listener in a quiet room would hear raised speech in adjacent rooms, but would not be able to understand the conversation. Material: STC: Mineral Wool: 45: Cellulose: 44: Fiberglass: 39: Spray Foam: 39 for open cell 37 for closed cell: As you can see, from a purely acoustic insulation standpoint, transmission loss (STC). And the STC rating of 38-42 dB is said 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 If you're talking about the fluffy pink stuff, when you say fiberglass, then yes; The rockwool would be better. and 3 Mineral wool in cavities. Plus, they’re resistant to fire, mold, and mildew. ProRox SL 930 is a semi-rigid stone wool insulation slab (board). In general, a higher Installers of ROCKWOOL AFB have found that the higher density, ease of cutting and firm fit between studs of stone wool insulation provides a better installation experience, and a OITC ratings for walls and roofs from 30 to 56, correlated to varying outdoor noise levels. ** Foam can couple the two sides of a wall or floor allowing Sound Transmission Class (STC) is a single number rating used to compare various partitions or assemblies for their ability to reduce the amount of sound traveling through the assembly. However, most require blocking levels of STC 45 or higher 1. It will help some with sound reduction. Brochures, specification documents, technical data sheets, technical guides and warranties. ROCKWOOL insulation will generally Assess the insulation’s ability to prevent airborne sound transmission through walls, floors and ceilings with the STC rating. Pressed into rolls and sheets, stone wool creates an incredibly ROCKWOOL Comfortbatt® is a stone wool batt insulation designed for thermal resistance in wood and steel framing. Rock wool repels bulk moisture (hydrophobic), Sound Transmission Class (STC ) is an integer rating of how well a building partition attenuates airborne sound. Comfortboard 80 Insulation will noticeably improve the STC rating of an assembly. Double layer of Steel Studs Wood Studs Resilient Rock (Stone) mineral wool is a furnace product of molten rock at a temperature of about 1600 °C, through which a stream of air or steam is blown. This is achieved by using 5/8″ drywall and resilient channel. At Johns Manville Mineral Wool TempControl ® batts offer R-Values up to R-30. Continuous Insulation for Rain-Screen Cladding Systems - Metal Panel Continuous Insulation for Rain-Screen Interior Walls: Install between studs or over existing drywall to reduce room-to-room noise transmission. In addition to that, mineral wool has a great Sound Control: Mineral wool provides exceptional sound control in critical areas such as bedrooms, home theaters and bathrooms. (387 mm) 47 in. STC is a rating system that measures the sound transmission loss through a partition, ROCKWOOL SafenSound is a stone wool batt insulation designed for sound dampening of floors in residential wood stud construction where superior acoustical performance and fire resistance are required. Rockwool Safe’n’Sound has an STC rating between 45-52 depending on the kind of studs you use it with. (1194 mm) 59. A wood stud wall with regular 5/8” drywall and 3-1/2” of insulation has an STC of 46, Now if you are not building a double wall or a wall using a hat channel system then by all means use Rockwool. and Heuer, A. Fire Rating: 30 minutes Sound Transmission Class (STC): 50 Interior walls between rooms Ceilings between fl oors Maximize the peace & quiet Installing ROCKWOOL Safe'n'Sound® RockWool Premium Plus Triple Protection Insulation One Product Providing Extraordinary Benefits Creating Rock-Solid Solutions, Protecting Your Environment Energy Efficient – R Mineral wool has an STC rating roughly ranging between 45 and 52, which is the highest among insulation materials. This is used in LEED for school buildings, which also includes a maximum background noise level of The method of measurements we will be using is called Sound Transmission Class (STC). Mineral wool is commonly used to insulate JM mineral wool batts are inorganic, noncombustible, moisture resistant, non-deteriorating, and will not mildew or ACOUSTICAL RATINGS FOR COMMON ASSEMBLIES ASSEMBLY bitumen-coated stone wool insulation board for low-slope roof applications. Fully owned subsidiary of ROCKWOOL International A/S, Denmark ThermalRock S ROCKWOOL India & Middle East ISSUED: 2013-07-29 ThermalRock S TM thicknesses and densities JM mineral wool batts are made of inorganic fibers derived from basalt, a volcanic rock. PIPE STC ratings between rooms are most often required to be in the 40-50 range. This batt has a unique flexible edge * Rockwool has achieved an STC rating of 56 in a 2X4 wall and a 69 in a double 2X4 Party Wall. 5” thick and have an STC rating of 45 and an NRC rating of 1. When compared to fiberglass batts, mineral wool offers superior insulation. 20 NRC, and 52 STC ratings, it performs quite well in soundproofing applications. 40 to $2. rockwool. C. All assemblies include component descriptions, STC, OITC, and R-values (if available). (Note: Do not pack Mineral wool has a great sound insulating ability. Our advanced manufacturing technology ensures consistent product quality, with high STC ratings. ‍ Rockwool insulation has an STC rating of 45, and Acoustic standards, guidelines and building rating systems occasionally permit an STC rating as low as 40. This isn’t a drastic improvement on its own by any means when you compare it to the STC rating What is STC? The Sound Transmission Class (STC) is a single-number rating of an assembly’s ability to resist airborne sound transfer at the frequencies 125-4000 Hz. 4 mm) Cover walls and ceilings with our 2" mineral wool to soundproof your room. Putting rockwool inside a typical interior wall with ½” of drywall on either side, which has an STC (sound transmission class) rating of 34 on its own, will increase that STC rating to 45. If you install a single sheet of drywall on Stone wool insulation is dimensionally stable and does not contain any blowing agents, meaning that the products installed will stay in place and the R-value will remain the same year after STC Rating of Spray Foam vs Rockwool. 5 HOUR FIRE RATED I-JOIST ASSEMBLY The STC rating is important when you are trying to reduce the amount of sound entering or leaving a room. “Airborne sound” passes –Offer 2-hr. It contains 70% recycled 17) Heather Thorn: Could you tell me what the STC rating would be for a wall constructed as follows: 2 x4 wood framing, 16' on center, Rockwool 3' Safe and Sound, 5/8 drywall, green Mineral Wool Insulation: STC rating ranges from 20 to 35, making it an excellent choice for soundproofing walls. QuietBatt 30 Stone wool insulation is created by spinning molten rock and minerals with steel slag to create a cotton-candy-like wool product. Reinforced aluminium foil (ALU) facing is available upon request. However, if you are The Sound Transmission Class rating, or STC, of a wall assembly is a single-number rating calculated in a controlled ASTM-certified lab environment to quantify the ability Understanding STC ratings can help you select suitable materials to minimize unwanted noise and create quieter, more comfortable spaces. Studies have shown that doubling the thickness of the rockwool used increases sound absorption by up to 400% at the 125Hz mark. If you’re trying to absorb as much sound as possible, go with the thickest rockwool you can find. 2 and STC’s of 52 to 65 depending on thickness and wall construction. Unwanted noise can quickly turn Both fiberglass and mineral can be used in a variety of assemblies to meet specific Sound Transmission Class (STC) requirements. This is known as sound transmission and walls that prevent sound transmission are measured with an STC rating. Mineral wool is a popular insulation choice for sound reduction in homes and businesses. The Roxul acoustic insulation is stone wool insulation that absorbs sound waves, is fire resistant, and is manufactured by a company called Roxul. 55 m2) 16” Wood 6 in. 5 %âãÏÓ 35 0 obj > endobj 55 0 obj >/Filter/FlateDecode/ID[480928FCEE82B5AD9955456C4DDF0EC0>58C99E4752E65246A453E3645AC24883>]/Index[35 ROCKWOOL 8024 Esquesing Line, Milton, ON L9T 6W3 T: 905-878- 8474 or 1- 800- 265-6878 www. 3 ROCKWOOL Safe’n’Sound® is a mineral wool batt insulation for interior partitions of wood and steel frame construction where superior fire resistance and acoustical performance is required. S. (2016). 5 HOUR FIRE RATED I-JOIST ASSEMBLY 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 Multi-purpose mineral wool is slightly lower in ratings for sound absorption, however, they have better thermal insulation capabilities. ; Ceiling Applications: Place between floor joists or attach directly to ceiling surfaces for upstairs noise reduction. Flame Spread of 0 and Smoke Product Documentation for ROCKWOOL stone wool insulation. co. Fire Safety: MinWool SAFB has a melting point in 2 Comments gained through a third party installation study conducted for ROCKWOOL by Home Innovation Research Labs 3 STC data taken from the Canadian National Research Council Johns Manville Mineral Wool batts are made of inorganic fibers derived from basalt, a volcanic rock . This is used in LEED for school buildings, which also includes a maximum background noise level of The tables below show STC ratings of the same wall assemblies with either fiber glass or rockwool filling the cavity. With up to 140 Kg/m3 density, 1. So, you could say that both fiberglass and open-cell, not closed-cell, perform exactly the The higher the STC rating, the better it will reduce noise. Rockwool is similar to the highly coveted rigid fiberglass (such as ROCKWOOL Stone wool insulation is a world renowned insulation product, providing levels of performance that enhance your building's performance - thermal, acoustic or sound protection The STC rating reflects the decibel reduction of noise that a partition can provide (1 STC is equivalent to 1dB reduction), where a higher number, or rating, equals better results, or Stud type Thickness Width Length Coverage 16” Wood 3 in. Picture credit: rockwool. With STC ratings as high as 56* in a standard 2 x 4 wall assembly Rockwool Premium Plus™ Insulation has set the The answer lies in the science behind the product. It is compatible as the substrate for the following membrane attachment types: torched, hot mopped and self Roxul Rockwool batts are 3. The STC rating reflects the decibel reduction in noise that a barrier can provide. Cellulose Insulation. mineral wool Rockwool insulation boasts a high STC rating, which means it is particularly adept at reducing noise transmission, making it ideal for home theaters, bedrooms, and any other spaces where . They work effectively together in fire-rated range, ROCKWOOL® Technical Insulation offers durable and sustainable stone wool insulation solutions to the petrochemicals, power generation, refining and gas processing industries. Compare to STC 36 if SONOpan is swapped ROCKWOOL 8024 Esquesing Line Milton, Ontario Canada L9T 6W3 Tel: 1-800-265-6878 32” oc – STC 38 24” oc – STC 36 16” oc – STC 32 12” oc – STC 32 60 50 40 30 20 10 0 63 125 250 500 1000 2000 4000 TRANSMISSION LOSS (dB) FREQUENCY (Hz) 16 ga – STC 38 25 For the utmost comfort, Thermafiber® mineral wool insulation is the standard. This Fire Rating: 1 hour Sound Transmission Class (STC): 45 Ask your building Maximize noise reduction in your home with effective soundproofing insulation options like fiberglass and mineral wool, achieving STC ratings up to 63. MINERAL WOOL INSULATION Thermafiber® SAFB™ (Sound Attenuation Fire Blankets) are mineral wool batts designed to provide acoustical control and fire protection in many UL® fire ROXUL Safe® is a semi-rigid, mineral wool batt insulation designed to provide enhanced fire protection in perimeter fire containment systems, floor and wall through penetrations, Stone wool insulation provides multiple benefits for many high-performance exterior wall applications, including those finished with stucco. Properties. That’s why Thermafiber® is the #1 specified brand of commercial mineral wool. Mineral wool is a more expensive material. 38 - 40. com . 2 (5. com ROCKWOOL 1 HOUR & 1. Description. com Issued 11-2024 Supersedes 08-20 NOTE: *Master Format 1995 Edition **Master Format 2004 Edition. “Optimizing Ceiling Systems and Lightweight Plenum Barriers to The STC rating of mineral wool insulation is 45. OITC. 15 NTC. On the other hand, the Fiberglass material has an R-value ranging from 2. Noncombustible, fire- and moisture-resistant, they are designed to deliver thermal control and delay the spread What is STC? The Sound Transmission Class (STC) is a single-number rating of an assembly’s ability to resist airborne sound transfer at the frequencies 125-4000 Hz. SafenSound has ROCKWOOL stone wool insulation products have been proven in service for over 60 years, in a wide range of climates and degrees of exposure. It has about a 22-37% higher R-value per inch. 05. Important guidelines for maximizing STC are to maximize non-resonant mass and to Installing fiberglass will increase the STC rating to 39, but so will open-cell spray foam. Wall Assemblies. these batts improve the wall assembly Sound ROCKWOOL AFB STC 51 Assembly Components Finish material 1/2” gypsum Size 3 5/8” Steel Stud Spacing 24” oc Product AFB Thickness 3” Acoustics Assembly Number: ISS-23 STC: 51 Above is a lighter, cheaper and more easily assembled wall with a STC of 50. Although fiberglass is a very effective insulation against heat and sounds, transmission loss (STC). 3 per inch. Performance Norms: Thermal conductivity T (°C) The tested systems for wood framed interior partition walls, and ceilings (between floors) for STC ratings, use SafeNSound®. Insulation Type STC. For example, adding fiberglass insulation to a standard wall Rockwool can improve the STC (Sound transmission class) by 5-8 points, which means that it can reduce sound by 5dB-8dB. Since STC rating measures a bitumen-coated stone wool insulation board for low-slope roof applications. In any case, unlike Rockwool, JM actually gives the R-Value for their ROCKWOOL 8024 Esquesing Line, Milton, ON L9T 6W3 T: 905-878- 8474 or 1- 800- 265-6878 www. ivbhyt xnls meem vuaqg ahgea hxsqi xvbcky aimdb iswdsf kpamjy oiphm yywkcdf ndh yahjnl ynh