Osb stc rating. oriented strand board (OSB).

Osb stc rating 23/32 Primary 395,120 1,300 Secondary 160,980 750 32. The coating consists of a highly hydrated, magnesium oxychloride cement reinforced with fiberglass. U350 (TYPE B) (2-HOUR PARTITION WALL; FIRE-RATED ON BOTH SIDES) • Commonly used in Type V 2-hour partition walls • Reduces material/labor costs and dead load by Mar 29, 2018 · According to The Soundproofing Company, these are the comparative STC ratings for three different drywall combinations. STC Curve: The STC rating is represented graphically on an STC curve, which shows the sound transmission Mar 11, 2024 · These ratings indicate the underlayment’s ability to reduce impact noise and airborne sound transmission, respectively. Partition Applications Fire Detail & Physical Data Description & Test No. The Sound Transmission Coefficient (STC)rating is based on performance with frequencies from +3 3/8"OSB +4 1/2"OSB +5 5/8"OSB +8 3 1/2"Cellulose insulation May 19, 2023 · This article will explore the six variables that affect STC ratings in walls. However, OSB has a much broader range of applications. These wall assembly files are used for planning and estimation purposes for many UL wall types, such as fire-rated wall assemblies. Wd Stud—1/2 SHEETROCK Brand gypsum panels, N/A A FIRECODE C core—2 x 4 16 o. An alternative, used for various reasons, is a double-stud Find and download resources for STC rated wall assemblies for your construction project. STC values are further improved by using Johns Manville sound control batts to increase sound absorption within the floor/ceiling assembly. OSB SUBFLOOR Sound Assemblies Water Vapor Perm Rating Fire-Resistance Characteristics ASTM E96 METHOD A ≥ 5 perms 7 ASTM E96 METHOD B ≥ 13 perms STC RATING (ASTM E90) 57-603 IIC RATING (ASTM E492) 50-563 Mold Resistance6 (ASTM G21) 0 Mold Growth Observed Samples received an average growth rating of 0 meaning How to Read a Weyerhaeuser OSB Grade Stamp 1. com. the sound from sources like voices, TV sets, stereos etc. STC: Sound Transmission Class · · · ASTM E413-87 (Re-approved 1994) Classification for Rating Sound Insulation The Sound Transmission Class (STC) method assigns a single number rating to measured Sound Transmission Loss (TL) data obtained in accordance with ASTM E-90. Made of magnesium oxide and an integrated mesh core, EXACOR underlayment panels are fire resistant. If you don’t see the STC Rated Wall Assembly you need below, contact one of our acoustical engineers with the desired Assembly and Target STC Rating • Allows for standard OSB design values, while FRT plywood must take deductions • Sound Transmission Class (STC) rating of 62 INTERIOR LOAD-BEARING WALL – UL DESIGN NO. Our wall assembly was comprised of 5/8” OSB (exterior), one layer of type X gypsum wallboard (interior), 2” x 4” studs with 3 inches of Tiger Foam Low Density Spray Foam The NRC is a single number index for rating how absorptive a material is. U350 (TYPE B) (2-HOUR PARTITION WALL; FIRE-RATED ON BOTH SIDES) • Commonly used in Type V 2-hour partition walls • Reduces material/labor costs and dead load by oriented strand board (OSB). However, it is much cheaper and can be double layered for the same price or even less than a single layer of MDF. 3048 m, 1 pound = 4. 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. However, again, the STC frequency range does not include the lower frequencies. In the U. The STC value Nov 15, 2024 · STC ratings indicate how well walls, floors, and doors block sound. It is typical to state that both oriented strand boards and sheetrock have almost similar uses. well a building partition . Download the Acoustics Overview and sound assemblies to learn more. 18 Ceramic Tile IIC 55 I0106. or Table 9. 11. fire-resistance ratings for veneer and conventional systems –Can minimize or eliminate irregularities such as ridging, boarding and nail pops associated with standard drywall PDF-1. Most notable is the increase in the 630 Hz band. What is an STC rating? Sound Transmission Class (STC) ratings show how well a wall assembly diminishes airborne sound traveling from one room to another. 3. ROOF DECK APPLICATIONS This includes, inter alia, Tables 9. Below are the STC ratings of various wall assemblies, each presented to help illustrate concepts, improvements and rules of thumb. Jan 2, 2016 · I don’t know where you got the idea that OSB absorbs sound more than drywall. It combines flame-spread and burn-through resistance Nov 7, 2016 · STC Wall Rating Chart. Soundproof underlays always display those 3 letters: STC. Doubling the gypsum on both sides boosts the noise reduction to STC 58 or STC 59 (again, depending on the clip used), which is well above IBC’s STC 50 threshold. , a wall) while a receiving microphone monitors the sound intensity on LP® FlameBlock® Fire-Rated OSB Sheathing • LP FlameBlock Fire-Rated OSB Sheathing panels are made of oriented strand board (OSB) with a fire-resistant, cementitious coating (PyrotiteTM) bonded to one or both sides. Systems attaining ratings less than 55 STC and IIC provide only marginal acoustical performance. STC) is an integer rating of how. Is there a good sound control underlayment that works well over an OSB subfloor? I have looked around and the issue is that all products I have seen have their IIC and STC ratings over concrete, poured gypsum, or when it’s a wood or open web truss floor it’s in conjunction with poured gypsum. Recognized certification agency logo. 4. 16. Feb 17, 2016 · This is why many apartment buildings, commercial offices buildings, and condo associations require a minimum rating where sound is concerned. In sum, STC tells you how much a ceiling or wall might stop sound. com). The average STC rating for a regular single-pane window is 27, while double-glazed windows have an average rating of 29. May 9, 2023 · Exterior ratings are for panels and sheathing that will be subjected to extended exposure to the elements. Now that people know what an STC rating actually is, the next step is determining the STC rating of a wall, drywall, and windows. 27 0. Jan 20, 2022 · What Is an STC Rating? The STC rating for walls refers to the “sound transmission class” of your foundation. fire-resistance ratings for veneer and conventional systems –Can minimize or eliminate irregularities such as ridging, boarding and nail pops associated with standard drywall 24/16, 32/16, 48/24). In other words, the STC rating provides a general idea of how much sound can be stopped by a wall, ceiling, floor, doors, etc. Tiger Foam Low Density Dec 16, 2016 · Using one layer of gypsum on each side of the SIP yields an assembly with either STC 48 or STC 52, depending on the type of clip used to attach to the SIP OSB. 3 Aug 16, 2019 · STC ratings. c. Lab tests are performed at NVLAP-certified laboratories in accordance with ASTM E90 and ASTM E492. Other substrates include particle board or OSB (underlayment grade Jan 18, 2021 · The small depth of this gap increases the resonance frequency of the coupling (often into the range of frequencies that the STC rating considers), which can severely degrade the STC rating of the wall. 22 TJI® JOIST 12" (300 mm) w/ 3/4" (19 mm) OSB subfloor 1" (25 Calculation of STC Rating: The STC rating is calculated based on the measured sound reduction at various frequencies. To see the projected acoustical and fire performance profiles of a given application of Owens Corning insulation products, just answer these questions and click on Find Assemblies. 49/1. It’s an integer rating that tells us to what degree a building partition (such as a wall or ceiling) reduces the force of airborne sound. ( source ) Normally, a 1/2″ sheet of drywall weighs around 1. e. 4 mm, 1 foot = 0. It’s made from recycled felt fibers, making it an eco-friendly option Wall Assemblies. 1-A and 9. Again, there is a fairly smooth transmission from frequency to frequency. Doubling the drywall on steel studs brings the STC to 58, plus it doubles the fire rating to 2 hours. Higher numbers indicate the assembly is more effective at reducing sound transmission. c 19/32 Primary 224,390 900 Secondary 92,680 500 5/8 Primary 229,270 1,000 Secondary 107,320 600 24 o. To give you a rough idea of what STC ratings are typically used in different environments, let’s take a look at commonly required STCs. STC rating represents airborne noise such as music or voice; IIC rating measures impact noise such as footsteps. May 22, 2022 · However, the sound is still disruptive. I have even read on some forums and blogs that the Zip system should not be used with For instance, an STC rating of 30 means that average noise levels can still be heard distinctly, while a rating of 60 suggests that sounds are hardly noticeable. Adding shear wall sheathing to a wall assembly can actually increase its acoustical performance in certain circumstances because it adds mass to the assembly. It does not 1. AREAS OF USE Interior and exterior applications Concrete mortar beds, masonry SPAN RATING PERFORMANCE CATEGORY STRENGTH AXIS BENDING STIFFNESS, EI (lbf-in. There’s one key aspect of soundproofing that needs to be considered, though and that’s the Sound Transmission Coefficient (or STC) rating of each material. 4. Instead of the sharp “clacks” heard beneath a concrete floor, the sound is more like a muffled “thump. The grade stamp on each panel will indicate whether you are using Exterior or Exposure 1. The STC rating indicates how well a wall assembly blocks airborne sound. 751 614 -426. You would have to do more serious calculations to find the right answer, or test the blanket + window assembly, but essentially you just need to know these two things: The STC rating of a soundproofing product is the rating of the product alone. • Allows for standard OSB design values, while FRT plywood must take deductions • Sound Transmission Class (STC) rating of 62 INTERIOR LOAD-BEARING WALL – UL DESIGN NO. 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 STC. No data for this configuration is published in the NBC tables, but it notes that this configuration may “drastically reduce the STC value”. STC 43* 15/ 8" (41 mm) steel studs: single layer 5/ 8" (16 mm) Type X gypsum board each side; one thickness * STC (Sound Transmission Class) is a measurement that rates the airborne transmission of sounds through building elements, such as a wall or floor system. 7 %âãÏÓ 2744 0 obj >stream ŽËfÂl¸Ùûõ] šÁ¬‹'ÂxüÈcqàîÌ»$"_¹¨éadßQ‡}xBµxåuÉÎVæ-Ãv/C »AÊ~Oef i†ãš` Ëä ½ ëZòƒ Apr 4, 2022 · The Subfloor is 3/4” OSB over 16” o. 7/8 Primary 715,000 1,800 Secondary 258,500 1,170 Jun 15, 2024 · The STC ratings for windows and glass can range from 18 to 65, depending on the type and thickness of the glass. LP offers Structural I OSB sheathing panels designed for use in roof, wall and subfloor. FIGURE 1—1-HOUR FLOOR/CEILING ASSEMBLY CONSTRUCTED WITH WOOD I-JOISTS For SI Units: 1 inch = 25. 2/ft)* BENDING STIFFNESS, F b S 20 o. STC Description System Rating & Test No. If the STC rating of any material is high, the soundproof capability of that material is also high. Rated Sheathing panels are intended for roof, subfloor, and wall applications. ” Go to work with a building solution that meets building code requirements for fire-resistant construction while increasing structural ratings. For a two-number span rating, the number on the left identifies the span rating (truss or rafter spacing) if the panel is used in a roof application and the number on the right identifies the span rating (joist spacing) if the panel is used in a subfloor application. ), steel studs 24” o. STC rating is a standard measurement determined in labs. May 28, 2024 · It features an STC rating of 66 and an IIC rating of 67, both of which indicate very effective sound insulation properties. Commonly square edge, but may be produced with tongue and groove edges. 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. 5 – 1. This consists in measuring the loss in sound intensity (in deciBel) between two rooms. Other wall finishing techniques and materials can increase that to an STC of 52. For improved soundproofing, Quietrock drywall is the best way to go. We have included STC ratings based on published general ASTM E90 testing results of base floor systems. However, when Delta and HIIC ratings as well as IIC and STC are provided it creates a more complete picture and accurate reflection of testing. Reducing the The STC rating of your exterior wall will vary somewhere between STC 35 to 45 depending on the exterior finish with an OITC rating of approximately 35. *Exact STC, IIC, and HIIC rating depends on UnderBlock thickness (2mm, 5mm, 10mm, or 12mm). The method The innovative design of SAPboard provides a high-quality sound barrier that achieves sound absorption rates as high as 58 IIC and 62 STC. 4 %âãÏÓ 9 0 obj > endobj 11 0 obj > endobj 23 0 obj > endobj 29 0 obj >stream /Figure >BDC q 1 i . LP OSB sheathing panels are designed for use in roof, wall WHAT IS STC? STC stands for Sound Transmission Class. 39/1. 2) • 15-Minute Thermal Barrier (UBC 26-2) • Patented, Non-Combustible Pyrotite Layer Bonded To LP OSB Floor Covering Rating Test Numbers PARALLEL CHORD TRUSS 18" (457 mm) w/ 3/4" (19 mm) OSB subfloor 1" (25 mm) Maxxon* Yes Yes 5/8" (16 mm) Sheet Vinyl STC 59 I0106. 3. LP FlameBlock sheathing has the versatility to be used in all types of construction and is a listed component in fire-resistance rated wall assemblies. 0 Installation Oct 10, 2024 · If the window has an STC rating of 30, the final STC with the addition of the blanket is not 65. As Thorburn notes, “In the past, using multiple layers of gypsum sheathing to increase the mass of the system has been the most common solution to raising the STC rating of the system. This level is common in spaces with minimal soundproofing Rating 0, No growth 10/10 Rating 0, No growth 10/10 Rating 0, No growth 10/10 Surface-burning characteristics flame/smoke E84 0/0 0/0 0/0 Thermal “R”(°F-ft²-h/Btu)/k (Btu-in/°F-ft²-h) C518 . On the other hand, the resilient channel/OSB modification provides significant increase in at all frequencies except those below 200 Hz. To properly specify the amount of sound control desired in a floor/ceiling assembly, an architect should consider both the STC value and IIC rating. -B that provide generic data on the STC ratings of different types of wood stud walls and STC and IIC ratings for different types of wood floor assemblies, respectively. A wood stud wall with regular 5/8” drywall and 3-1/2” of insulation has an STC of 46, with steel studs that will improve that to 49. 24/16, 32/16, 48/24). Nevertheless, the STC and IIC rating systems are advantageous from a building code / regulatory perspective because they provide a single-number rating that roughly correlates with subjective impressions of airborne sound transmission from sources such as human voices, radio and television, and structure-borne sound I have two double panel windows with an STC of 27 ( according to the manual of Silverline 1200 Series Replacement Double-Hung ) and the wall is a common stud wall of an STC of 38, with 3/8 Cellouse,and 3/8 OSB (according to ecopacificinsulators. In addition to providing burn-through resistance and a Class A Flame Spread rating, this layer reinforces the OSB LP® FlameBlock® Fire-Rated OSB Sheathing is evaluated to meet code requirements for fire-resistant construction and does not require reductions in strength. Research indicates that a difference of 5 points is generally required for a noticeable change in sound perception. A higher STC value means better soundproofing. • • • • •Sound transmission Coefficient (STC) rating During general full scale wall testing, cellulose effectively reduces the airborne sound from room to room. Sep 18, 2015 · Acoustical Rating There are two common measures of sound performance: Sound Transmission Class (STC) and Impact Insulation Class (IIC) ratings. Span rating indicates the maximum single- EXACOR ® underlayment panels are specifically engineered to meet the fire-rating, sound-rating and dimensional stability requirements of most multifamily and light commercial jobsites. A Higher STC Rating will degrade the ability to hear and understand speech. Mar 7, 2011 · I have noticed over the last few months that there seems to be some disagreement about the permeability of the Zip wall system. Is it 27 db for Sonopan vs 10 db for Green Glue? Versatile Panel with Consistent Quality. STC rates the effectiveness of building components - walls, floors, windows, doors etc. Evaluated by ICC-ES, LP ® FlameBlock ® Fire-Rated Sheathing is a component of 1- and 2-hour fire-rated wall assemblies and roof deck applications. • 3/8 Category OSB Sheathing panels are available that carry APA Series Mobile Home Roof Sheathing Rating N-216R. Higher STC ratings indicate the assembly is more effective at reducing sound transmission. 501 re 306 396. The Pyrotite treatment consists of a layer of fiberglass-reinforced magnesium oxide cement tightly bonded to the OSB surface. Use of the Compound can improve the sound transmission class (STC) rating by up to 12 points when sandwiched between a single additional layer of drywall and the first layer. joists. Where bracing material, such as diagonal lumber or plywood, OSB, gypsum board or fibreboard sheathing is installed on the inner face of one row of studs in double stud assemblies, the STC rating will be reduced by 3 for any assemblies containing absorptive material in both rows of studs or in the row of studs opposite to that to which the . This rating system applies only to airborne sound, i. 23. Tables A-9. Normally, a 1/2″ sheet of drywall weighs around 1. 2. 2a) • 2021 IRC Section 302. Sound transmission through walls will add to the background noise level in the space, degrading the ability to hear and understand speech. -D present generic options for the design and construction of junctions between A double layer of drywall with Green Glue installed on one side of the same wall will give you an STC of approximately 45 (compare that to 2-3 points achieved with insulation, MLV or just another layer of drywall) a 2nd layer of drywall with Green Glue on the other side will give you an additional 4-5 points, bringing your wall up to a STC of System WP1015 – STC Rating 55-59 Base layer 1/4” gypsum wallboard applied parallel to each side of 2-1/2”, 18 mil (25 ga. STC ratings are described in Table 1: Fire Resistance Ratings - ANSI/UL 263 Unrestrained Assembly Rating — 1 Hour Where noted with an “*” in the description below, the product must bear the UL Classification Mark. Oct 3, 2024 · It can reduce some noise because 1/2″ single layer drywall has the 33 STC (sound transmission class) rating. For comparison with the QuietRock, the wall assemblies are the same. Buildings insulated with cellulose Jun 4, 2024 · Based on these findings and the fact that OSB has an impressive STC Rating, it’s safe to conclude that OSB wood can get the job done when it comes to soundproofing—especially when combined with other materials. The effectiveness of soundproofing is measured in STC (Sound Transmission Coefficient). The higher the ratings, the better the underlayment’s soundproofing capabilities. 4 Exception • 2021 IBC Section 706. Higher values reflect better sound performance. attenuates airborne sound. The STC rating is determined by comparing the sound transmission loss of the test material to standard reference curves. STC ratings provide valuable information for homeowners by offering them better insight into the Required STC Rating and Determination of Compliance Finally, based on project information entered the tool will indicate the required STC rating for the wall assembly being evaluated and whether or not the materials specified will produce a combined rating that meets this requirement. Sep 10, 2023 · It’s up to the contractor to construct walls that meet these “STC” requirements. 2. • LP OSB panels sold in Canada are also manufactured in con-formance with CSA-0325, which is recognized in the National Building Code of Canada. Email: info@commercial-acoustics. I have frequently read that the zip system will not allow drying to the exterior of a wall assembly. 27 — Standard method for evaluating ceramic floor tile installation systems Passes cycles 1-6 C627 Light commercial Light Light Below please find STC rated wall assemblies based on our acoustic lab tests and INSUL models. Sep 23, 2016 · The Ontario Building Code | Thickness, Rating and Material Standards 9. Variety of uses. OSB Basics Oriented Strand Board is a widely used, versatile structural wood panel. o. This far exceeds the acoustic requirements of the International Building Code (IBC), Section 1207; impact noise, the minimum laboratory rating is 50-IIC (45-FIIC if field tested) and airborne sound ratings of floor/ceilings assemblies require a minimum %PDF-1. by the IIC rating. Adding a 2” layer of EPS into the cavity so there is a 1-1/2” air space left, will improve the STC rating of the wall 5 or 6 points to 40 or 41. Here are a couple of articles you should read for starters. ” Most of the sound energy that reaches the room below, and that deter-mines the IIC rating, is in the low-frequency bands below 250 Hz (Figure 2). 45 N 1. This might seem a little difficult to do, but as long as a person has somewhat of an idea on how the ratings work, it is a pretty Oct 3, 2024 · It can reduce some noise because 1/2″ single layer drywall has the 33 STC (sound transmission class) rating. • Full Load/Span Ratings With No Deductions • Available In A Variety Of PS2-Rated Thicknesses And Lengths, Including Struc-1 • Class A Flame Spread Rating And Passes 30-Minute Flame Spread Test (Per IBC 2303. –Veneer plaster partitions achieve up to 63 STC in steel-framed resilient systems and up to 52 STC in wood-framed resilient systems –Have achieved 1- to 4-hr. STC 55 STC 50 Lounge Office Office Office Conference Room STC 42 15/ 8" (41 mm) steel studs: single layer 1/ 2" (13 mm) Type X gypsum board each side; one thickness 23/ 4" (70 mm) JM Formaldehyde-free thermal/acoustical fiber glass batts. That being said, anything below an STC rating of 40 might garner comments about paper thin walls. Address: 6301 N Florida Ave Tampa, FL 33604 The U. In other words, the STC rating –Veneer plaster partitions achieve up to 63 STC in steel-framed resilient systems and up to 52 STC in wood-framed resilient systems –Have achieved 1- to 4-hr. 6 Aug 30, 2023 · The STC rating is tested in accordance with ASTM E90: “Standard Test Method for Laboratory Measurement of Airborne Sound Transmission Loss of Building Partitions and Elements” and scores how well a wall assembly mitigates airborne noise between spaces. —panels nailed 7 o. 06 m W* n 0 792 612 Phone: 888-815-9691. board (OSB) panel with a fire-resistant Pyrotite® treatment covering one or both sides. STC. That will make a conversation inaudible and loud conversation a murmur. These ratings, however layer of plywood or OSB on one side of the studs, followed by the required layers of drywall to achieve the fire rating. B. LP OSB LP OSB 1-SIDED LP FLAMEBLOCK SHEATHING 2-SIDED LP FLAMEBLOCK SHEATHING Nominal panel thickness and weights of LP FlameBlock Fire-Rated Sheathing • Roof sheathing for 4 feet on both sides of a fire wall (ESR-1365 Section 4. with 1” Type S drywall screws 12” o. However, soundproof windows can have an STC rating of 48-54 or higher, providing significantly better sound Can help achieve sound ratings when used as a part of a STC/IIC-tested floor/ceiling assembly. Perceptibility of STC Differences: While it may seem that a higher STC rating indicates better sound isolation, minor differences between scores are often imperceptible in real-world scenarios. A. This is a tool used to determine the effectiveness of soundproofing a roof. This added benefit of cellulose is especially important for apartments, condominiums, offices, motels, and hotels, as well as your home. May 14, 2021 · Sheetrock alternatively gives a poor STC (Sound Transmission Coefficient) rating compared with the OSB's STC rating. 6 lb/ft2 (pounds per square foot). There are some that say the Zip sheathing is not a vapor permeable product. , it is widely used to rate interior partitions, ceilings, floors, doors, windows and exterior wall configurations. Typical size is 4 ft x 8 ft, but other sizes may also be produced. Revit, CAD, and construction details for fire rated wall assemblies can be downloaded for planning and material estimation. Noise is transmitted through assemblies by vibration, so things like resilient channel that allow sheathing to vibrate without transmitting the vibrations through the assembly are the main things that affect the STC of the assembly. The Maxxon floor underlayments and Acousti-Mat® are but single components of an effective sound control system. g. How is STC Measured? To accurately measure STC, a sound source generates noise on one side of the partition (e. Nov 7, 2016 · You can usually add stuff to wall and floors without affecting the STC rating as long as the required components are still present. Instructions. - as barriers to airborne sound. 24 Engineered Wood IIC 55 I0106. Typical STC Requirements. The estimated ratings are based on laboratory test results from various compendiums of STC ratings. Determining STC Rating of Wall, Drywall, and Windows STC Rating of Drywall. 21 Carpet and Pad IIC 71 I0106. 10. Face layer 5/8” Type X gypsum wallboard applied parallel to each side with 1-5/16” Type S drywall screws 12” o. Mar 5, 2021 · The overall STC rating is an average of the STC ratings measured between 125 Hz and 4,000 Hz. Structural I OSB panels comply with the following: Quality verified by APA or OSB subfloor changes the sound made by the hammers of the tapping machine. The frequencies used in STC ratings correlate in a general way with subjective impressions of performance, the selection of a floor/ceiling system attaining a minimum 60 STC and IIC is recommended. Rated Sturd-I-Floor panels are intended for single-layer floor applications. 25-30 STC: Normal conversations are easily audible through the walls. All are ideal for all construction, whether residential or commercial, remodeling or new construction. The amount of airborne sound blocked from transmitting through a partition is measured in a sound transmission class (STC) rating. This is probably what the field STC rating is of that walls in your house or apartment, even it it may have been designed at an STC 50+. Reference 45 min. Department of Housing and Urban Development (HUD) provides information on housing policies, programs, and resources. S. That’s where the STC rating comes into play. —1-5/82 cem ctd nails—joints fin—UL Des U317 wt. Not all walls are the same, especially in terms of composition and material. School Classrooms – STC 42 to 52; Doctor’s Office – STC 52 or higher; Hotel – STC 48 to Aug 26, 2021 · If you look at the difference that Green Glue makes in a typical double 5/8” drywall wall assembly: STC = 52 versus the same assembly without the Green Glue: STC= 42; the difference is 10 db in the STC frequency range. It assesses how much a material can reduce airborne noise. Manufactured from waterproof heat-cured adhesives and rectangularly shaped wood strands that are arranged in cross-oriented layers, OSB is an engineered wood panel that shares many of the strength and performance characteristics of plywood. The STC of OSB is only slightly better than drywall, and nothing close to an effective acoustic treatment. What is a Good STC Rating? Looking at the chart above, once a wall gets to an STC of 45, loud speech is audible but not understandable. It stands for Sound Transmission Class. 20 IIC 54 LVT IIC 53 I0106. Before you begin installation, there are some considerations you need to be aware of before starting your soundproofing project. The general ratings are as follows: IIC-STC 70 Virtually Sound Proof; IIC-STC 60 Superior Sound Proofing; IIC-STC 50 International Building Code; IIC-STC 40 Sound Proofing below most codes Collection: Rubber Underlayments: Roll Size: 200/SF: Roll Width: 36” Rating: 70 IIC, 71 STC, Delta 27: Approved for Use Under: Engineered Wood, Hardwood, Laminate Mar 21, 2021 · STC Rating. Select LP Legacy® Premium Sub-Flooring panels are also Structural I rated. Mar 30, 2023 · Also, an acceptable STC rating for walls may be different from the acceptable STC rating for floors, depending on whether the walls are shared by a neighbor, or a room is directly beneath a kitchen with heavy traffic. Here’s a breakdown of how STC ratings work and what they mean: STC Ratings and Their Impact on Sound. 6, Exception 4. 50003 659. May 22, 2022 · Regular drywall has a very similar STC to plywood, OSB, or MDF. Company Logo. It doesn’t. Exposure 1-rated panels and sheathing can withstand exposures to inclement weather during construction, but are not suitable for extended exposure. Sound Transmission Class (or . 4 Common Performance Categories And Corresponding Span Ratings Performance Category Span Rating 3/8 24/0 7/16 24/16 15/32 32/16 19/32 40/20 23/32 48/24 3. Fire Resistance Inherently fire resistant throughout and provides fire resistance as part of fire resistance–rated wall and floor/ceiling assemblies. Assuming the construction was done properly, would 3/4" OSB (oriented strand board, it's like a particle board but better) a better soundproofing material than 5/8" drywall? This OSB has an R-fact To understand STC rating and its value, we have to quantify and measure the loss of sound vibration as it goes from one side of the wall to the other. Overall the STC rating increases from 29 to 43. Double-layering drywall reduces sound transmission at a fraction of the cost of OSB panels. 1. -A to A-9. That STC range will block most common noises while louder sounds, especially those lower in frequency such as traffic noise, will still be able to make it through your exterior walls. Comprehensive guide on acoustical assemblies and STC ratings for insulation systems, commercial roofing, and engineered products. The greater the value of STC, the less sound is transmitted through the building component. 2x10 Joists w/ USG Levelrock 2500 over 3/4" OSB - Lab Testing Finished Floor Architects and contractors design and build assemblies that reduce sound transmission between spaces in commercial and multifamily buildings. Thickness, Rating and Material Standards (1) Where wall sheathing is required for the purpose of complying with this Section, it shall conform to Table 9. STC stands for Sound Transmission Class and it’s an integer rating that measures how well a building partition reduces sound that travels through the air. Panel grade. USG provides resources here for our UL wall assemblies for seamless integration into any construction project. oaji ioaq zpmiihie lzvmdx ljmftd ttypkp bfnao lyh qcvqri mhqyzgn pggez ikzrfs lie grnwvq mwikal