Stc rating drywall. Sep 17, 2018 · Understanding Transmission Loss Results.
- Stc rating drywall 751 614 -426. 5” Wood Stud 16”oc 16”oc Cellulose STC and OITC Ratings of ASTM E 90 Assemblies Insulated with Various Insulation Nov 30, 2009 · Own a small apartment building multi-unit and am attempting to engineer the best (or highest STC rating for the buck) Current conditions are plaster finish on scratch coat on old shiplap drywall with 2"x4"s and 16"x48"x3/8" gyproc. Single-pane window: STC 26; Standard drywall (no insulation): STC 33; SoundAssured 1 lb Mass Loaded Vinyl (MLV-100): STC 26; SoundAssured 2 lb Mass Loaded Vinyl (MLV-200): STC 33 Standard Single-Layer Drywall - STC rating between 30 and 35; Stud Wall with Insulation - STC rating between 40 and 45; Soundproofing Drywall - STC rating between 45 and 50; Concrete Block Wall with Insulation - STC rating between 48 and 55; Specialized Acoustic Wall system - STC rating of 50 or above; Naturally, these are just approximations STC Rated Wall Assemblies. Walls. An STC Jun 15, 2024 · The Sound Transmission Class (STC) rating of 5/8” drywall mounted with standard 2″x4″ studs is 33 and a staggered wood stud wall is 48, providing excellent noise control. Roughly speaking, the STC rating equals the reduction in decibel levels across the partition or through a wall. I'd like to see the Rw ratings for option 1 vs option 2. These ratings are estimated, meaning that actual laboratory test data, depending on the source of information, ranges within 1-2 points of the values shown below. Calculate What You Need for the Improvements You Want. (NOTE: This only applies to single stud assemblies. 3½" mineral wool batts 5/8" Type X Gypsum Wallboard (H) 2¼" #6 Type S drywall screws @ 12" o. 00 per sq. STC Rated Wall Assemblies Target Sound Transmission Classification (STC) Ratings are the recommended partition STC that will provide acceptable privacy and sound attenuation between spaces. Higher numbers indicate the assembly is more effective at reducing sound transmission. Receptacle boxes should not be located back-to-back on opposite sides of a wall. PABCO® Gypsum cannot guarantee actual STC ratings. Aug 30, 2023 · Six variables to consider for optimal STC ratings. Sound Transmission Class (STC) of Rated Partitions. You can add other elements such as soundproofing wall membrane or resilient channel to improve the STC rating of a wall. 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 glue standard application amount and a 2nd layer 5/8 drywall. While the performance might be better in the high frequency bands, the overall rating (STC or Rw) will be controlled by the low frequency performance. But dry walls have resonance issues. Stay wrapped up this winter with 15% off Quiet Wrap Pipe Soundproofing and Quiet Batt Soundproofing Insulation until February 21st. One of the ultimate trade-offs in wall design is structural load versus STC ratings. Feb 9, 2021 · Table 1 One-Hour Fire-Resistance-Rated Loadbearing Wood-Frame Wall Assemblies Assemblies Rated from Both Sides Studs Insulation Sheathing on Both Sides Fasteners Details IBC Assemblya 2x4 @ 16" o. Sep 17, 2018 · Understanding Transmission Loss Results. SilentFX QuickCut offers exceptional noise control, making it an ideal choice for spaces where sound reduction is a priority. Area Separation Wall Systems Area Separation Wall Submittal Sheet SA925 WB2129 SHEETROCK Shaft Wall Systems –Tested systems achieve up to 58 STC –Have achieved up to 4-hr. 12 of the LABC. There’s a handful of other soundproofing products offering greater STC ratings than standard drywall. Flanking sound patterns, the integrity of the wall, and construction methods factor in effective sound control. Serious Energy cannot guarantee actual STC ratings. Next, determine “how soundproofed” you need the wall to be. Nov 7, 2016 · Commercial Acoustics explains how to determine the STC of a Wall, and what most common STCs are achieved with conventional construction methods. When added to drywall, the STC rating goes up significantly, making the wall soundproof. 4 %âãÏÓ 9 0 obj > endobj 11 0 obj > endobj 23 0 obj > endobj 29 0 obj >stream /Figure >BDC q 1 i . Table 5-15 shown here gives STC ratings for different partition wall designs. Sound waves are absorbed by the wall, limiting what you hear on the other side. In general, an STC of 50 is a good target level of sound isolation for walls and ceilings. drywall on one side raises the STC into the 40s. 15 Sound Attenuation Batt Insulation Product Data Sheet Description Acoustic Comparison of Cavity Insulation Types Sound Attenuation Batts (SAB’s) Gypsum Board Insulation Type Test Number STC are unfaced, lightweight, fl exible One layer each side. Before we go any further, let’s discuss the STC ratings for everyday materials in your home. We won’t get into the science behind that here, but just keep this in mind when considering wall and floor soundproofing using sound membranes. In many cases each attenuation for each octave band for each wall type must be examined. Original: Single drywall (1/2-inch) no insulation, over wood studs: STC 33 (this is typical in many homes) Two different modifications: Double 1/2-inch drywall on each side of the wall, fiberglass batting: 44 STC Phone: 888-815-9691. Feb 15, 2024 · A wall's STC can be increased by. And keep reading to learn about Outdoor-Indoor Transmission Class, which takes transportation noises into account for building materials used on exterior assemblies. Sound Transmission Class (STC ) is an integer rating of how well a building partition attenuates airborne sound. PDF-1. However, if the space between the gypsum boards and the metal studs is filled with batt insulation, the STC can be improved to 43–45. Understanding STC ratings for drywall can be complex. E Structural 52-55 Column, beam, through-penetration walls and floors, and joists. The overall STC rating is actually based on a best fit curve and the overall performance of a wall can be dependent upon mass, rigidity, airspace, and physical connection. Doubling up the 545 on that type of wall construction produces a quiet value of 80. drywall on each side and no cavity insulation has an STC rating of 34. By doubling the drywall and adding some batt insulation, the STC rating is improved to 44. The diagrams and stated STC ratings are intended to serve as a guide. 1. A reduction of 10 STC levels results in an apparent sound reduction of 50% Select materials for sound absorption according to their STC ratings. Since an STC-70 rating is rarely required in a normal residential scenario, there are few examples available that provide detailed guidance. First, select the hourly rating needed; Second, choose the type of design you are seeking (example – Walls/Partitions (steel framed), Floor/Ceiling (wood framed), etc. (Fire Rating) UL Number USG Levelrock® Sound Mat USG Levelrock® USG Durock™ Underlayment (a) Insulation Framing Member Depth RC Deluxe® USG Sheetrock® Brand Firecode® C or X Gypsum Panels Floor Covering Sound Rating Test Number STC IIC Engineered Wood I-Joist (1 Hour) L570 L589 M502 M506 SAM-N12™ 1/8 in . 2. Below please find STC rated wall assemblies based on our acoustic lab tests and INSUL models. Adding acoustical absorption in the air cavity +5 STC; Double layers of dry wall on one side of a wall +3 STC; Double layers of dry wall on both sides of a wall +5 STC; Double air cavity of the wall +5 STC All drywall seams should be taped and mudded (on each layer). ONE OF THE MOST EFFICIENT LOW-COST METHODS OF REDUCING SOUND TRANSMISSION IN WOOD OR STEEL-FRAMED PARTITION OR CEILING ASSEMBLIES. Can you afford to give up the extra space? Typical Wall Assembly for an STC-70 Rating. While soundproofing drywall panels are better than standard drywall at resisting sound transmission, they must be integrated into a complete soundproofing wall system. Architects and contractors design and build assemblies that reduce sound transmission between spaces in commercial and multifamily buildings. Besides adding a soundproof membrane to a wall, another method to greatly improve STC rating is to move to 25 gauge studs at 24″ on center. Use it for high-rated Sound Transmission Class (STC) wall and ceiling assemblies, where sound transmission between rooms or dwelling units is a concern. High STC ratings with fewer layers of gypsum board than traditional assemblies. RAL-TL90-186 Insulation Included: ROCKWOOL The STC or sound transmission class is a single number method of rating how well wall partitions reduce sound transmission. Fire-rated Construction Acoustical Performance Partition Applications Fire Detail & Physical Data Description & Test No. 3. Soundproofing Effectiveness. One effective approach is the addition of dense insulation materials, like mineral wool or fiberglass within the walls, absorbing sound waves and preventing transmission. 1): Feb 13, 2023 · To determine the STC rating of a wall, drywall, or window, there are several factors to consider: Material: The type of material used in the construction of the wall, drywall, or window can significantly impact its STC rating. May 19, 2023 · Sound Transmission Class (STC) ratings show how well a wall assembly diminishes airborne sound traveling from one room to another. Drywall between double studs can dramatically reduce the STC rating of an assembly. It is rated as a Type X fire-resistant product, providing additional protection in case of fire. ) These wall assembly files are used for planning and estimation purposes for many UL wall types, such as fire-rated wall assemblies. com. Kevin Herreman Owens Corning . Abuse resistant per ASTM C1629. Department of Housing and Urban Development (HUD) provides information on housing policies, programs, and resources. S. Adding absorptive material (soundproofing systems) Conclusion: Determining the STC Rating of a Wall. Feb 9, 2024 · There’s no excuse for not using 5/8” drywall if soundproofing is a consideration for the project, but many situations needs higher STC ratings. The STC rating is a crucial measure of how effectively a building partition attenuates airborne sound, making it essential for creating soundproof spaces. Address: 6301 N Florida Ave Tampa, FL 33604 Jan 10, 2025 · Precast walls will usually come with an STC rating to save you the trouble of how determining the STC rating of a wall yourself. Dec 30, 2022 · How Is a Wall’s STC Rating Calculated? STC rating can be determined by employing the following STC calculation formula: Use an audiometer to record the decibel levels in the room containing the noise source. Dec 18, 2023 · There are several methods to diminish sound transmission between walls. back to top The SoundBook® is the industry’s leading resource for technical details and sound-rated assembly drawings – all in one place. Measure the sound in the neighboring room: Next, proceed to the adjacent room and note the number of transferred decibels. The STC is measured by Transmission loss of the loudness of the sound (in dB) and at various frequencies. Have a Question About Assemblies? Call: 1-800-USG-4YOU Jan 20, 2022 · Learn how to determine the STC rating of a wall. The lowest STC numbers you see are around 33. Results: A standard 2 x 4 wall 16" OC with 1 layer of drywall on each side has an STC rating of approximately 32. A typical interior wall has a single layer of 1/2-inch drywall on each side with no insulation inside with an STC rating of 33. STC is the wall equivalent of CAC. This gives some varied answers for sure, which is what is used as part of an average to give an official STC rating. ?? by the required layers of drywall to achieve the fire rating. Understanding STC Ratings for Drywall. 50003 659. 25" $. Since the drywall is rigidly connected via drywall screws and direct contact, the sound travel directly through the gypsum board itself. Pros One 5/8” layer provides sound stopping results For example, a thick concrete wall will block more sound than a thin gypsum/2x4 wall. The drywall also features a tapered edge, reducing the need for additional taping and finishing. STC rating goes from 25 – 65. –Can increase the STC rating of a double-layer, steel-framed partition from 29 to 53 STC –An integral part of high-performance CGC partition designs for attenuation of low-frequency sound from machinery and music –Suitable for use at the perimeter of fire-rated wall assemblies MICORE® Mineral Fibre Board to have Sound Transmission Class (STC) ratings and Impact Insulation Class (IIC) ratings of 50 as shown. At STC 66 most noise cannot be heard through the partition although some very loud bass may still be audible. Sound transmission class (STC) is the rating system used to measure a partition wall's ability to reduce the effect of airborne sound. If a fire develops and causes the top layer to fall, then the second layer would not have approved fastening to develop the two hour rating. Sound Transmission Class (STC) is an integer rating of how well a framed wall attenuates sound. Sep 6, 2024 · STC ratings are not for single panels but for an entire wall construction system that includes two layers of soundproofing wallboard, framing studs, and insulation. at SOUND TRANSMISSION CLASS RATINGS. It depends on the material and the quality of the wall itself May 3, 2023 · Since 5/8 is much thicker than ½ inch drywall, you get much more durability and noise reduction effectiveness with the former than the latter. I’m a big fan of using 5/8″ wallboard everywhere in the house. However, STC ratings can be misleading as they only begin at 125Hz, but we can hear deep sounds from as low as 20Hz. Email: info@commercial-acoustics. Unless the staggered wall assembly had an unusual number of electrical boxes or other penetrations, it will outperform a single stud assembly using the same materials. With years of experience and expertise in the field of soundproofing, we have developed a range of STC rated assemblies and techniques to help you achieve the best possible sound This acoustically enhanced, fire-resistant gypsum core is encased in heavy, 100% recycled paper on the face and back sides and offers superior abrasion, mold, mildew and moisture resistance. Other assemblies may be used provided that they comply with the requirements of Section 1206. c. STC stands for Sound Transfer Coefficient and it is a measurement of the amount of sound that can transfer through a wall, floor, door, window or ceiling. Basic methods of Fireproofing protecting columns and beams with gypsum base and veneer finishes, mineral fireproofing, and gypsum drywall. Repair Details. Find and download resources for STC rated wall assemblies for your construction project. WS4-1. Our STC rated wall assemblies and STC ceiling assemblies are designed to provide effective soundproofing solutions for both residential and commercial spaces. Construction practices have an influence on final STC ratings. Feb 19, 2024 · For commercial-grade STC ratings, you could aim as high as 60, which is more than enough to reduce the sound in a firing range. An STC of 50 is a common building standard and blocks approximately 50 dB from transmitting through the partition. ft. In soundproofing studios we want to have an STC between 50-65. Jul 28, 2018 · STC Ratings for Walls. Penetrations Through Rated Wall and Floor Assemblies. 1 15-1. ) based on its ability to reduce sound coming through it. Adding a layer of SoundBreak XP Wall® Board to one side of the staggered wall assembly tests to a 53 STC. Equation 2 is the STC equation for clay masonry (ref. Adding acoustical absorption in the air cavity +5 STC; Double layers of dry wall on one side of a wall +3 STC; Double layers of dry wall on both sides of a wall +5 STC; Double air cavity of the wall +5 STC STC rating (Sound Transmission Class rating) is a score given to a building’s surface (wall, ceiling, window, etc. The target ratings are dependent on the adjacency and occupancy class on each side of the wall – a band room may not need a high STC wall if placed next May 22, 2022 · A standard wall will have an STC rating of 35-45. An introduction to key terms, strategies and noise attenuation assemblies 1. Single Stud Wall QuietRock on one side of existing drywall Staggered Stud Wall QuietRock on one side of existing drywall STC: 53 - Fire: 1 Hour STC: 59* - Fire: 1 Hour *UL/ULC Design #: U309, U376, U386, W313, W317 *UL/ULC Design #: U340, U376, U386, W313, W317 Lowest-Cost Solutions in the Market Lowest Cost Wall QuietRock on one side Double Feb 3, 2025 · Drywall with average thickness has an STC of around 36 in the USA. 1lb per square foot MLV has an STC rating of around 26. Increasing Air Space. I thought low frequency performance escaped the calculations and therefore the ratings for Rw and especially STC. Steel Framing STC Values Sound Control 21/2" (64 mm) Steel Studs 35/8" (92 mm) Steel Studs STC 52 21/ 2" (64 mm) steel studs: double layer 1/ 2" (13 mm) Type X gypsum board one side, single layer other side; one thickness 23/ 4" (70 mm) JM Formaldehyde-free thermal/acoustical fiber glass batts. Construction materials companies use a rating system called Sound Transmission Class levels, or STC, to determine how effective a product is at When the mass of a barrier is doubled, the isolation quality (or STC rating) increases by approximately 5 dB, which is clearly noticeable. Two layers of gypsum board is generally used for two hour fire wall protection. † Superior sound damping, cost-efficient material that is easily finished and decorated in the same manner as standard gypsum board. For example, a standard interior wall, meaning two sheets of ½ inch drywall separated by wood studs and no insulation, provides an STC rating of 33, which provides Mar 29, 2018 · According to The Soundproofing Company, these are the comparative STC ratings for three different drywall combinations. Jun 19, 2020 · STC Rules of Thumb – How Changing Stud Gauge and Spacing, among other factors, Improves the STC Rating of a Wall. It’s a relatively straight-forward proposition to achieve an STC 50 on a 25-gauge stud wall, but if the wall requires shear strength or structural load capacity, then the gauge size and spacing become a major hindrance. A wall with an STC of 38 would not perform as well as a wall with an STC rating of 50. You will be adding this product to another product, like a window or wall, which have their own STC rating. 5 fi berglass insulation batts, ⁄8" None TL-92-618 38 5 designed to deliver noise control ⁄8" Glass fi ber TL-93-325 49 5 in metal stud wall May 3, 2021 · Both wall assemblies are rated at STC 58. This technique is also used when you are installing drywall on to Whisper Clips and Hat Channel, just make sure to screw into the channel in place of the joists. Moving to double 5/8-in. To determine the STC rating of a wall in a lab, they can test out frequencies from 125 Hz to 4000 Hz. Sep 10, 2023 · STC Ratings for Drywall. 5” Wood Stud Single Drywall Construction Wall Construction Schematics 5/8” Drywall Single Staggered Drywall Construction 3. For example, a thick concrete wall will block more sound than a thin gypsum/2x4 wall. To dampen the “noise” by 75%, a reduction of 10 decibels is required. Conclusion: A “1 STC” difference is equivalent to a “1 dB” reduction in sound transfer. 18W + 40 where W = pounds per square foot (psf) This information is provided as a tool to help estimate. Features and specifications are subject to change. An alternative, used for various reasons, is a double-stud wall. An STC 50 In general, loud speech can be understood fairly well through an STC 30 wall but should not be audible through an STC 60 wall. Mass: An extra layer of gypsum board on one or both sides of a wall assembly will increase the STC rating. If you have an STC of 60 or more, that is considered highly isolated. Therefore, you could surmise that 3/4” OSB board would be +6, and 5/8” gypsum board is +4 and fire rated gypsum board is only +5. Adding mass. 06 m W* n 0 792 612 Gypsum board is not as good as OSB board. Things like the thickness and air space within the wall can improve the rating greatly. Calculating the required improvement involves subtracting the target STC rating from the existing STC rating. 1 Not recommended for ceiling applications as a face layer QuietRock® 510 Benefits • Great value, offering solid performance at the lowest cost on the market • Delivers STC ratings of 47-52 • UL classified in select fire rated May 2, 2022 · What Is STC? Before we can go over the comparison of QuietRock to regular drywall we need to understand STC ratings. Revit, CAD, and construction details for fire rated wall assemblies can be downloaded for planning and material estimation. 5” Wood Stud Double Drywall Construction 16”oc Cellulose 5/8” Drywall 3. STC Ratings for Everyday Materials. • Doubling the mass of a wall assembly does not double the STC rating. † Use of SoundBreak XP Gypsum Board results in wall partitions with high rated STC values that are thinner than traditionally built high rated STC wall partitions providing increased usable floor space. Feb 27, 2018 · Most Common Mistakes in Soundproofing – Undermining STC Ratings: Adding Drywall: Layering on additional panels of drywall is an extremely inefficient way to improve the STC of a wall. Download the Acoustics Overview and sound assemblies to learn more. Keeping the double drywall on one side and then putting fiberglass or mineral wool insulation in the stud cavities and putty pads on the junction boxes All drywall seams should be taped and mudded (on each layer). Oct 10, 2024 · The STC rating of a soundproofing product is the rating of the product alone. Staggered or double stud walls are higher rated than single stud walls. Cavity Absorption: Sound-absorbing insulation (fiberglass or mineral wool) can boost a wall assembly’s STC rating. back to top How effectively a wall or floor reduces airborne sound is measured by STC ratings , detailed separately . STC 45 21/ 2" (64 mm) steel studs: single layer 1/ This STC Wall Calculator estimates the Sound Transmission Class (STC) rating of a wall assembly based on various materials and configurations. For a single plate stud wall, achieving the required acoustical rating of at least STC-50 will often involve using staggered studs or resilient channels on one side. Common Wall Types and Associated STC Ratings Below is a list of common wall types and their estimated STC ratings that could be used as a guideline for design. Wall Type Construction Depth Extra Cost STC; Standard Wall Assembly: 5/8" Type X Drywall 2"x4" Wood Studs R-13 Fiberglass Insulation 5/8" Type X Drywall: 4. 75" $. What does STC 60 mean? STC 60 is a rating on the Sound Transmission Class (STC) scale, which measures the degree of sound control in a building. However, occupants could still be subject to awareness, if not understanding, of loud speech. 5” Acoustics Assembly Number: ISS-22 STC: 50Report No. A typical wall with two half-inch sheets of drywall with no insulation between might have an STC rating of 33. Metal stud walls perform better than wood stud walls. The U. Insulation will noticeably improve the STC rating of an assembly. • An empty framed wall (steel studs and a layer of gypsum wallboard on each side) has an STC of approximately 35 Feb 16, 2024 · To achieve an STC-70 rating the new wall may be a total of 12″ wide, depending upon the final configuration needed. A standard wall without insulation usually has an STC rating between 30-34. QuietRock® 510 installs and finishes like standard drywall, requiring no special tools or training to use. The units adjoining party walls (are all mostly bedroom to neighboring living rooms) all are terrible for sound Apr 28, 2017 · To increase a wall's STC Rating up to STC 66, the addition of Green Glue Whisper Clips and Hat Channel in conjunction with a layer of Green Glue Noiseproofing Compound between layers of 5/8" drywall. 16 ROCKWOOL Acoustic Wall Assemblies Catalog ROCKWOOL Acoustic Wall Assemblies Catalog 17 STC 50 Assembly Components Finish material 1/2” gypsum, 2x 1/2” gypsum on single side Size 2 1/2” Steel Stud Spacing 24” oc Product AFB Thickness 1. STC Ratings & Steel Stud Framed Walls . The STC rating of a CMU wall can be estimated based on its weight using the following formula: STC = 0. ft A higher STC rating means less sound will make its way through the partition wall – sometimes called a party wall, common wall or shared wall – creating a quieter living space. This is done by determining the target STC – Sound Transmission Class. Decoupling the wall with a double-thick stud wall and 545 takes the value to 75. To determine a single STC for the wall system, first calculate the STC using both Equations 1 and 2, based on the combined weight of both wythes, then linearly interpolate between the two resulting STC ratings based on the relative weights of the wythes. Sep 9, 2002 · Any STC information is only reliable up to a certain point. May 19, 2016 · A “normal” wall assembly is made up of a Studs, Insulation and Drywall. Products Applications A staggered stud assembly using the same materials achieves a 45 STC. 1/2” OSB board equals 5/8” gypsum board. Entertainment Room/Music Room Sound Control is an important design consideration for both commercial and multi-family projects. That’s it for now. fire-resistance ratings with multi-layer designs (UL U415) –Oscillation tested to 1 million cycles to ensure structural performance Mar 30, 2023 · What is the STC rating of drywall? The STC rating of walls has to do with multiple variables. May 6, 2024 · As a result, be sure to check the STC rating for all components, such as windows and doors that will be installed in the wall assembly. The protection (and rating) comes from the proper installation, including proper nailing for both layers. . Sound Transmission Class (STC) is a measure for rating the performance of a wall system as a barrier to airborne sound transmission between adjacent closed spaces such as offices. In the USA, it is widely used to rate interior partitions, ceilings and floors, doors, windows and exterior wall configurations (see ASTM International Classification E413 and E90). For example, if you look at the transmission loss result graph, you can see that at a frequency of 125 HZ, the number of decibels blocked is only about 12 decibels for the STC-29 gypsum board and 18 decibels for the STC-26 steel sheet (26 GA). 4. D Horizontal Membrane 51 Shaft wall used in a horizontal plane. M2Tech paper provides additional zone of protection against moisture and mold. Reference 2 hr. The latter will provide approximately 12 dB more sound blocking performance” Source: Construction Specifier, Author Mr. A wall system with an STC < 35 is considered low performance, whereas one with an STC > 55 is considered high performance. Sound Control For A Purpose Just like many other characteristics of a structure that can be optimized for the benefit of its occupants, better For an interior wall that is made of 3 5/8″ metal studs with one layer of 5/8″ gypsum board on both sides, the STC rating is about 38–40. For example, a wall made of brick or concrete will generally have a higher STC rating than one made of drywall or wood. Mass is commonly added to existing walls by adding additional layers of gypsum. 501 re 306 396. Lab tests are performed at NVLAP-certified laboratories in accordance with ASTM E90 and ASTM E492. Some might deliver better results and fall within your project budget; others seem to cost a fortune and may not be realistic for your project. Within an Noise-reducing drywall products are rated on transmission loss, or the number of decibels that are blocked by a wall. They may be used to meet the acoustically rated construction requirements stipulated in Sections 1206. 5/8" drywall is a great place to start when improving the noise reduction of a wall, and it should be combined with acoustical sealant for proper soundproofing. However, you’re also losing 2-3/4” off the perimeter of the room. 0™, the industry’s most comprehensive resource for technical information and detailed architectural drawings of sound-rated assemblies for architects and contractors seeking to achieve required Sound Transmission Class (STC) ratings on their projects. Installing insulation within a wall or floor/ceiling cavity will improve the STC rating by about 4-6 dB, which is clearly noticeable. 45-47: Quietclips Wall Assembly: 5/8" Type X Drywall 2"x4" Wood Studs R-13 Fiberglass Insulation Quietclips - 7/8" Hat Channel 5/8" Type X Drywall: 5. Others, not so much. That’s why an acoustically dead material with a good STC rating is required. For a continuous 5/8” Drywall 3. Aug 16, 2019 · QuietRock 545 on a single stud wall has an STC rating of 56. As you can see, 3/4” OSB board is not listed, but OSB board increases by +1 for each 1/8” thickness. When the mass of a barrier is doubled, the isolation quality (or STC rating) increases by approximately 5 dB, which is clearly noticeable. Why Installing 5/8″ Drywall on the Wall’s Better Than 1/2″ Drywall? Like I mentioned, most homes these days will have the 5/8″ on the ceilings and 1/2″ sheetrock on the walls. Jan 16, 2025 · A standard 2×4 wood-framed wall with 1/2-in. 99 per sq. If you don’t see the STC Rated Wall Assembly you need below, contact one of our acoustical engineers with the desired SilentFX QuickCut systems improve sound attenuation with STC ratings of 50 and higher. PDF. 10 and 1206. Mar 4, 2020 · CHARLOTTE, NC (March 4, 2020) - National Gypsum Company has introduced SoundBook 2. Figure 3 - Sound attenuation at 1/3-octave frequency bands for both wall assemblies In the frequency band 80 Hz to 250 Hz, the sound transmission is virtually identical for both walls. Achieves best possible score of 10 for mold resistance per ASTM D3273. Some are UL tested and ASTM rated. You can use the preceding table as a guide for choosing materials based on the required degree of sound control. (19 mm) 3 Features and specifications are subject to change. [3] The STC provides a standardized way to compare products such as doors and windows made by competing manufacturers. You cannot simply add two STC ratings together because of the logarithmic scale of decibels. Conference Room/Classroom 2. STC Description System Rating & Test No. Lab-certified STC-rated up to 62 Single and double-leg channels RC Deluxe® has extra-wide screw surface for easy attachment Available in 12’ lengths ClarkDietrich resilient channel is one of the most efficient low-cost methods developed to reduce transmission of Apr 14, 2022 · For example, if you have a wall assembly with an STC rating of 33, you can’t add a later of MLV with an STC of 26 to result in a wall with an STC of 59, it would be more like 39. Promo Code moo440 . The estimate could easily be off by as much as +/- 4 dB. (3 mm) mat 3/4 in . An increment of the STC from 34 to STC 64 results in sound dampening by around 30 decibels. 11 of the LABC. Wd Stud—2 layers 5/8 SHEETROCK Brand gypsum N/A J Sep 23, 2024 · Typical STC Ratings for Common Materials. kmmpro mrb mmthmz afeml fzk cpu jgw nqjilcm vdzzcs kvgseu efeo qzqxrn mibrz uqcj kti