Glass stc rating calculator. 2) for laboratory testing or ASTM E413, Standard .

Glass stc rating calculator QINGDAOMORNBUILDINGMATERIALSCO. Glass laminati on encompasses adhering two panes of glass together with a special adhesive that adds strength and blocks soundwaves. That’s where the STC rating comes into play. STC STC rating (Sound Transmission Class rating) is a score given to a building’s surface (wall, ceiling, window, etc. Read more about the tools below How to Calculate the Glass STC - Free download as PDF File (. At this rating, you may be able to hear very loud sounds faintly, but most sounds you won’t hear at all. com. insulating glass units. The higher the STC rating, the better the sound The Sound Transmission Class (STC) is a single-number rating of a material's or an assembly's ability to resist airborne sound transfer at the frequencies 125-4000 Hz. May 19, 2023 · This article will explore the six variables that affect STC ratings in walls. This calculator makes it easy for you to perform preliminary assessments of the Wind Load resistance of single glazed, annealed (not heat treated) window glass, with various edge support conditions, according to the ASTM E 1300 standard. These ratings, however • All values shown are glass only. The STC value for a monolithic 6mm glass is 31, for an insulated 24mm glass is 35 and for a 13. Calculation Example: The Sound Transmission Class (STC) rating is a measure of how well a partition or other building element blocks sound. Password This table compares Vitro Architectural Glass product performance data when assembled in a one-inch (25 mm) insulating glass unit with a ½-inch (13 mm) air space and two ¼-inch (6 mm) lites. Drywall between double studs can dramatically reduce the STC rating of an assembly. To determine the specific STC ratings of glass and a Jul 5, 2023 · Thinner glass has a low STC rating because sound travels through it easily. Read more about the tools below STC Ratings Chart Acoustical Performance of Glass and Wall Constructions Overall Thickness Inside Glass 1 3/4" (19. 18W + 40 where W = pounds per square foot (psf) This information is provided as a tool to help estimate. V. SoundPro calculates glass usage by performance or glazing configuration. Mecart’s standard acoustic products are labelled STC-35, STC-45 and STC-52. † Based on Stats Canada Report CS44-004-IN, April 2013 If a wall has a rating of 35, it does not mean that the wall stops 35dB of sound. † Based on Stats Canada Report CS44-004-IN, April 2013 Sound Transmission Class (STC) Calculator Sound Transmission Class (STC) Calculator Select Wall Type: Wood Stud WallConcrete Block WallBrick WallDrywall Partition Wall Thickness (inches): Calculate STC Rating Sign in with your username and password. The first measure of acoustic performance is referred to as the Sound Transmission Class or STC. This rating will give you an idea of how effective your chosen materials or construction methods are at reducing sound transmission. Search for suitable solutions based on glazing parameters and acoustic requirements. The method of measuring the Rw coefficient is defined by the ISO 10140-1: 2016 standard. txt) or read online for free. You can’t add STC ratings together. Beyond the type of windows you select, other factors can affect the STC rating of your glass. Factors That Affect Your Glass STC Rating. Address: 6301 N Florida Ave Tampa, FL 33604 Mar 3, 2023 · To find out the best windows and their glass STC rating chart, contact the best window company in Toronto such as Vinyl Light. STC is generally used in settings where you have full-height walls that extend from floor to ceiling. Typical dual glazed windows can achieve better ratings of 25-27. 060 P. Understanding STC Source: STCratings. The soundproofing rating for most standard homes is 33 STC, while soundproofing for studios must be at least 45 STC. 52mm laminated glass is 39. *70% recycled content is based on the average recycled glass content in all Owens Corning fiberglass batts, rolls and unbonded loosefill insulation manufactured in Canada. B. 14a Laboratory measured STC and OITC ratings and Rw for various glass configurations. For example, the STC number provides a standardized way to compare products such as doors, windows, or wall panels made by competing manufacturers. 85 NRC . When STC tests are performed, the TMS 0302 requires the testing to be in accordance with ASTM E90, Standard Test Method for Laboratory Measurement of Airborne Sound Transmission Loss of Building Partitions and Elements (ref. Laminated & Double-Glaze Combinations. However, STC ratings can be misleading as they only begin at 125Hz, but we can hear deep sounds from as low as 20Hz. Then easily create client-ready reports comparing glass options. Discusses the acoustical properties of glass, methods of rating, such as STC and OITC, applicable standards and the relationship between glass and other glazing components in determining an overall rating. STC ratings are a logarithmic scale similar to the earthquake Richter Scale, which means each escalating number is significantly higher in performance than the previous number. In general, a higher STC rating blocks more noise from transmitting through a partition. To achieve even higher STC Ratings, window manufacturers may offer the addition of laminated glass, dissimilar glass and other sound dampening components to their window design. Resilient channel can improve the STC rating of an assembly. See additional notes below data for specific To determine the STC rating of a wall in a lab, they can test out frequencies from 125 Hz to 4000 Hz. Assemblies will be organized by STC value ranging from an STC of 40 to an STC of 57. The STC rating system looks at the amount of noise mitigation provided by the assembly over a broad range of frequencies and a single number is calculated as its rating. Laminated IG (laminated glass toward interior) Double-laminated IG (various) Reports are generated in Eastman format and serve as guidance only. Jul 31, 2022 · Glass doors can range from 28 to 60+ STC ratings, while steel and fiberglass doors range from 20 to 50. mathematical point of view, taking the nowadays calculation means into account. Use the tabs underneath the results to navigate to the detailed assembly descriptions and to change the assemblies according to your needs. Implementation of the appropriate rating system is important because OITC and STC ratings are not linearly related, and the achievement of a strong STC rating does not necessarily correlate with a similar OITC rating. A sound reduction of 35 decibels is very high. At JELD-WEN, for example, we –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. electrics • Power and Data capability • Hard-Wired and Modular connections. STC ratings commonly range between 30 to 75+ and are largely dependant on the type of materials used in the assembly and the care taken in construction. Factors Affecting the STC Level on Site. Generally, yes. Data is based on testing ~36" x 84" glass to ASTM E413-87 in an acoustical wall. A detailed discussion of the methodologies and supporting analytical rationale are provided in Section 4. Sound Transmission Class ratings. Laboratory testing is used to measure the resistance of partitions such as walls, windows, or entry doors to the passage of sound. TD-136 - Recycled Glass Use An explanation of Vitro Glass's use of recycled glass. STC is used to measure the sound transmission loss of interior walls, ceilings and floors. The difference in sound levels is used to calculate the STC rating. . Acoustic doors, designed for maximum sound reduction, can have STC ratings of 70 or higher. That being said, anything below an STC rating of 40 might garner comments about paper thin walls. The rating covers the sound sources generated in building interiors Jan 11, 2025 · The result is sound control over a greater range of frequencies and a significantly higher Sound Transmission Class (STC) rating than a window with standard dual-pane glass. A leader in tools for the glass industry. glass options • 6mm framed glass only • Tempered and Laminated • Clear, Frosted finishes. The STC (Sound Transmission Class) rating is a single-num ber rating system for interio r build ing partitions and viewin g windows used to catego rize acoustic performanc e. 1. 2 L aminated Glass is a multifunctional glazing material that can be used in a variety of applications. For instance, if you have an STC of 40 on one wall and decide to add another wall with an STC of 20, the STC of both walls combined will not be 60. A higher STC rating translates into more reduction in sound. 29W b D3s trcQ C6 MKETIG@ [ ] Calculate the STC Rating: Let the calculator process the data and compute the STC rating. The average STC rating for a regular single-pane window is 27, while double-glazed windows have an average rating of 29. After sealed IG units were installed into the laboratory test opening, the first glass panel and wood spacers were used to complete the triple glass configurations. STC ratings are the ONLY way to accurately compare various noise reduction products. It is manufactured by permanently bonding two or more lites of glass with layers of polyvinyl butyral (PVB) interlayer, under heat and pressure, to create a single construction. 5” Acoustics Assembly Number: ISS-02 STC: 43 OITC: 28 Report No. Email: info@commercial-acoustics. %PDF-1. STC rating goes from 25 – 65. The attached STC and OITC data is for glass only and that the final STC rating of the window assembly could vary because of the influence of the acoustical performance of the framing members and the construction of the window assembly. UPDATED; TD-138 - Heat Treated Glass for Architectural The installed weight of concrete masonry assemblies can be determined in accordance with CMU-TEC-002-23 (ref. The higher the STC rating, the more sound will be dampened. Argon fill is 90% and air fill is 100%. STC ratings are calculated by a weighted average of Transmission Loss (TL: a door’s ability to reduce noise) values taken over 16 frequencies, which are fitted to a curve in a method defined by the ASTM E413 Classification Standard for Rating Sound Insulation. Although it is commonly used in the United States and is the most widely used measurement of sound reduction, STC has various limitations that prevent it from being comprehensively reliable in determining actual soundproofing expectations. If only one or two types of frequencies are predominant in an area, the overall STC rating might not matter as much. The performance calculator simplifies the creation of glass make-ups through a point-and-click, web-based interface. 7 %µµµµ 1 0 obj >/Metadata 422 0 R/ViewerPreferences 423 0 R>> endobj 2 0 obj > endobj 3 0 obj >/ExtGState >/XObject >/ProcSet[/PDF/Text/ImageB/ImageC Windows significantly impact Sound Transmission Class (STC) ratings because they can either enhance or diminish the overall sound insulation of a building. com Conclusion: A person cannot detect a change in loudness of +/- 1 dB (STC). As previously explained, this means they have been tested in a laboratory for their sound transmission loss. *OITC is estimate d base d on this test. Costing more than other materials, this is used mainly for exterior applications. If we assume that a branch of the United States Government, The University of Minnesota, The Minnesota Housing Authority, prominent acoustical engineers and several manufacturers of acoustical products are correct, a change of “1 STC” is equivalent to a change in loudness of “1 dB”. Username. Feb 19, 2024 · How is the STC Rating Determined? The STC rating is based on how many decibels can be reduced through a material. This gives some varied answers for sure, which is what is used as part of an average to give an official STC rating. 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. A rating of 40 would likewise correlate with a volume reduction to approximately 1/16th of the original level (1/2)^4 = 1/16). The Natio Dec 31, 2024 · Gaps or weaknesses in the frame can compromise the STC rating. Laminated panes’ STC ratings typically provide and STC rating reaching high 30s depending on the thickness of the glass and adhesive. STC ratings allow to accurately compare noise reduction capabilities by using a single value for the acoustical performance of a door. 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. [ ] Review and Interpret Results: Analyze the STC rating to ensure it meets your soundproofing needs. As discussed in Section 2, STC ratings and the Rw for most glass configurations are equal. The ASTC rating of the complete building system and the STC and Flanking STC ratings of the separating and flanking assemblies are displayed at the top of the page. Double-Glazed *70% recycled content is based on the average recycled glass content in all Owens Corning fiberglass batts, rolls and unbonded loosefill insulation manufactured in Canada. When planning glass wall systems, here’s a May 30, 2024 · STC is a widely recognized measure for sound insulation in windows and doors, focusing on human speech frequencies. Product ratings are also essential. All performance data is calculated using LBNL Window 7. Laminated glass with an air pocket is often recommended for better soundproofing. It is a logarithmic scale and ranges from 18 to 50 for windows. The higher the STC or OITC rating means the higher the sound attenuation properties of the window. Explanation. • The higher the Rw value the better the acoustic performance. Adding additional layers of drywall can improve the STC rating of an assembly. components. How SoundPro works. Oct 18, 2023 · Sound transmission class (STC) ratings and OITC ratings both rate the effectiveness of an assembly to attenuate airborne sound. It’s important also to consider: Glass thickness: thicker glass typically provides better sound insulation than does thinner glass If you are unsure of what rating would work for your project, there are some standards you can go by in helping you to determine your target range. * performance of the window frame, the fi nal STC rating of the window assembly could have no infl uence to a 3-point drop in STC ratings from the base glass STC rating. Mass pigmented and decorative interlayers can also be used to provide a wide range of effects. Sound Transmission Class (STC) rating. Location 6601 NE 112th Court Vancouver, WA 98662. STC ratings provide valuable information for homeowners by offering them better insight into the Laminating glass is a popular way to increase an STC rating. Oct 20, 2024 · This calculator provides the calculation of Sound Transmission Loss (STL) for a given Sound Transmission Class (STC) rating and frequency. This performance data is not a commitment for Cardinal to produce. 11F P. Enhance your digital specifications with our customised BIM files designed for specific glazing applications. In this case select a value which is 3-4 Rw points above required total window value for Window STC Rating Chart. A typical STC rating chart will often include an example of materials with a given STC rating, and the sounds you can expect to hear given the STC rating. • As a guide when frames are included, the Rw values shown will decline. Glass siz e and glazing system will a˜ect STC rating. To achieve these ratings and above, a dual window configuration with two sets of sash or a prime window with an exterior or interior storm panel The STC rating of a CMU wall can be estimated based on its weight using the following formula: STC = 0. Sep 17, 2018 · What we mean when we say STC-35, STC-45 and STC-52. OITC, on the other hand, covers a broader frequency range (80 to 4000 Hz), including lower frequencies often associated with external noise. STC ratings are used for windows, doors, walls and most building materials. In fact ex-act logarithmic calculated single number ratings are easier with current calculation means, than the old approach, which is much more complicated to put in simple formulae. STC is highly dependant on the construction of the partition. Address: 6301 N Florida Ave Tampa, FL 33604 Jul 4, 2024 · STC. Values are center of glass calculated using LBNL Window 7 per NFRC100 conditions. ,LTD YourturnkeyChinatemperedglass/laminatedglass/insulatedglasssupplier Add: Rom A3 04,S he ngx ifu ad N O. ) based on its ability to reduce sound coming through it. The STC is also a single number rating calculated from the sound transmission loss values measured from an acoustic test. Lower Range Up to STC 35. Glass size and glazing system will affect STC rating. 9 mm) 1/2" 0. One US glass manufacturer who has Oct 10, 2024 · If the window has an STC rating of 30, the final STC with the addition of the blanket is not 65. While STC and OITC ratings are published for various glass configurations, accurate ratings for the Laminated architectural glass can be fabricated using various glass types, including low-e, clear, low-iron, tinted, reflective, patterned or wired glass to achieve desired aesthetics or to improve solar control and thermal performance. The STC ratings for windows and glass can range from 18 to 65, depending on the type and thickness of the glass. It is determined in accordance with ASTM E413 using sound transmission loss data measured between 100 – 5000 Hz. 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. What Is a Good STC Rating for Windows? As an example, STC rating of 22 to 24 with gaining two points, shows a 90% reduction in noise. Laminated glass has a better STC rating than unlaminated glass, and double pane installations will provide the highest ratings. To get started, input your required performance data below. Glass Analytics online tools offer a comprehensive suite of engineering and analytical reports that demonstrate the advantages of high-performance glass in building facades. STC is determined by a weighted average of TL values taken over 16 frequencies, which are fitted to a curve in a method defined by the ASTM E413 Classification Standard for Rating Sound Insulation. The STC rating is the average amount of noise stopped at 18 different frequencies, measured in decibels. The Vitro Construct IGU tool allows you to configure a specific insulated glass unit by dynamically selecting the individual components of the configuration. Sound transmission class (STC) and Impact insulation class results are given as well as the following detail data at ⅓ octave band center frequency ranging from 125 Hz to 4000 Hz: TL / STC: Floor Layer Estimated Transmission Loss Nov 25, 2022 · A four-point STC improvement can cause a clearly perceptible change in your home’s acoustics, while a 10-point improvement can reduce sound by 50 percent. 3 software and represents center of glass performance data. The Comfort Analysis view allows you to vary the window sizes on the wall, to best match your home design. Of course, the rating is determined as an average based on the different frequencies between 125 Hz to 4000 Hz. Understanding STC ratings for drywall can be complex. What Is a Good STC Rating? An excellent rating is an STC of 60 or higher. 5. The method of measuring the sound transmission class (STC) is defined by the ASTM E413-87 standard. The STC ratings allow accurate 'apple to apple' comparisons. The STC (Sound Transmission Class) rating is a single-number rating system for interior building partitions and viewing windows used to categorize acoustic performance. The computation logic is based on 1/4” (6mm) monolithic glass has an STC rating of 31 1/8” x . Mid Range STC 36 - 42. g. integration • Drywall/base building • Optos, Focus and Tek Vue A: Based on our experience at the Architectural Testing Acoustical Laboratory, an OITC rating of 32 or STC rating of 40 is very difficult to achieve on a window with conventional 1" insulating glass. Sound Transmission Class (STC ) is an integer rating of how well a building partition attenuates airborne sound. Laminated and double-glazed glass both hold STC ratings of 40, but anything higher typically requires a combination of the two. 6. Ther Rw is more common in Europe, when STC is more common in USA. An STC rating is an instrument measurement of how much noise is stopped. 10). The estimate could easily be off by as much as +/- 4 dB. Your go-to portal for discovering the perfect glazing solutions, tailored to your requirements. Not all walls are the same, especially in terms of composition and material. Insulation will noticeably improve the STC rating of an assembly. 1/4" 41 41 Both Rw and STC describe the insulation against typical air noise. Seals and Gasketing: Even the highest-rated door will perform poorly without effective Jun 15, 2024 · STC Ratings for Windows and Glass. laminated glass n n 5/2011 S. CAC Calculating the STC Rating: The STC rating is calculated from a curve-fitting procedure defined by ASTM E413. The MTC Class is 100% based on an STC calculation, with the same reference The STC rating of a single lite can range from the high 20s to the mid-30s, with its score increasing with the thickness of the glass. 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. 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). 2) for laboratory testing or ASTM E413, Standard Sep 30, 2010 · Sound Transmission Class (STC) / Rw Calculator This calculator determines Sound Transmission Class of monolithic materials (e. Measure the sound in the neighboring room: Next, proceed to the adjacent room and note the number of transferred decibels. The final STC/OITC rating of the window assembly could vary because of the influence of the framing members and the construction of the window assembly. Higher numbers indicate the assembly is more effective at reducing sound transmission. Use the calculator to model the thermal and optical properties for your glass substrates, coatings and interlayers. For windows, STC ratings range from 18 to 38. This rating is based on how much sound is blocked across a range of frequencies, usually from 125 Hz to 4,000 Hz. † Based on Stats Canada Report CS44-004-IN, April 2013 to provide conservative estimates of required STC or Rw ratings to be used by the building designer as a planning tool for window glazing. NWTL140828-03 STC 40 Assembly Components Finish material 1/ The Sound Transmission Class (STC) is a whole-number rating of how soundproof a door or window is. Understanding STC Ratings for Drywall. Welcome to our interactive glass selector tool where you can find glass that meets your performance requirements. Check with your framing system supplier for total window values. Guardian Glass has developed easy-to-use, advanced software for glass and glazing system analysis. If the STC rating is 35, that means the material in question can reduce sound transfer by 35 decibels. Consider not only the STC rating but also door quality and construction. In fact, dual-pane windows with dissimilar glass can achieve STC ratings nearly as high, if not as high, as triple-pane or laminated glass. STC 43 Assembly Components Finish material 5/8” Gypsum Size 3 5/8” Steel Stud Spacing 16” oc Product AFB Thickness 3. An example of a window STC rating chart is as follows: 26-28 – single pane window; 26-32 – double pane window; 48-54 – soundproof window over a single pane window Sound transmission class (STC) ratings solve that problem by giving a single value to acoustical performance for a door. Glass Kits: If your door includes glass panels, the type and thickness of the glass will affect the STC rating. One of the features of glass is sound proof,whether it’s single glazing, laminated glass,insulated glass or even laminated insulated,the glass can reduce the sounds transferrd from outdoor to indoor. fire-resistance ratings for veneer and conventional systems –Can minimize or eliminate irregularities such as ridging, boarding and nail pops associated with standard drywall. Both STC and OITC ratings inform your window or door selection based on sound insulation The performance data below applies to an insulating unit constructed with two plies of glass and an air or argon filled space. On the Mar 22, 2022 · The final STC rating of a room is a composite, not an individual component calculation. In addition, proper installation is critical to ensure that sound does not enter through poorly fitted components. The definitions of two ratings: Sound Transmission Class or STC and Outdoor-Indoor Transmission Class or OITC; The project’s design requirements and how they impact the glazing system, and; How to calculate an STC or OITC rating; STC versus OITC. Glass Performance Calculator . Performance calculator. Compare the Mar 22, 2024 · The calculation of the Sound Transmission Class (STC) rating for glass involves rigorous laboratory testing conducted according to standardized procedures outlined by organizations such as the American Society for Testing and Materials (ASTM). It’s like the cousin of CAC but focuses on walls instead of ceilings. Laminated Glass Applications A leader in tools for the glass industry. *OITC is estimated based on this test. However, the STC rating has been used much longer and is more widely recognized as the For simplification, we have segmented NanaWall sound-rated opening glass wall solutions into three categories. The order of sound insulation performance from poor to excellent is: monolithic glass < laminated glass How to calculate the glass STC? One of the features of glass is sound proof,whether it's single glazing, laminated glass,insulated glass or even laminated ins E413-87 in an acoustica l wall. The test results are available upon request. concrete, glass, steel) using graphical computation method based on the material thickness, density, and critical frequency values. STC ratings are used for windows doors, walls & most building materials. Phone: 888-815-9691. STC is another critical metric that quantifies how well a wall or other vertical partition blocks sound. Dec 22, 2022 · Double-glazed glass can also provide an STC rating of up to 40. Performance targets are selected based on acoustic ratings, and results are revealed immediately. Class (STC) rating. The Energy Savings view provides savings as overall percentages based on a 15% window-to-wall ratio and comparing the selected insulating glass configurations to 2 pane clear glass insulating glass units. Acoustical Guide – Determining Minimum STC Rating Figure 1. Instead, the STC will be calculated using logarithms, and will probably 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. pdf), Text File (. It is a non-linear scale. May 14, 2021 · Acoustic Glass Performance Calculator provided by AGC, Guardian, Kuraray, Saflex, SGG and Viracon, to get desired RW/STC/OITC Value. To determine the specifi c STC ratings of glass and a window or door assembly, the following ASTM standards should be used: • ASTM E 90 - 90 Standard Test Method for Jun 16, 2023 · Both achieve an STC rating of 40, but higher ratings require a combination. For example, MLV has an STC rating of around 27. 0 This guide provides an introductory overview of glass concepts and terminology, plus Pilkington Wind Load Calculator. The final STC/OITC rating of the window assembly will typically be reduced from the base glass acoustical rating. Technical Glass Guide Update 6/15/21 – Version 3. Actual values may vary due to production tolerances. However, soundproof windows can have an STC rating of 48-54 or higher Jan 20, 2022 · What Is an STC Rating? The STC rating for walls refers to the “sound transmission class” of your foundation. 030 x 1/8” laminated has an STC rating of 34 1” insulated glass ¼” x ½” AS x ¼” has an STC rating of 35 Structural Performance The strength of laminated glass is determined by the glass thickness, type of vinyl, glass size, and the nature of loading. High Range STC 43 - 45. It’s important to • Glass STC ratings up to 46 STC • Solid STC ratings up to 48 STC • NRC ratings up to . Our glazed partitioning systems are tested at a certified laboratory to ensure reliable STC ratings. Mar 6, 2018 · Phone: 888-815-9691. Typically the material with the lowest resistance to the passage of sound has the greatest impact on a partition's STC value. High STC rated windows are designed to minimize sound transmission by incorporating multiple layers of glass, specialized framing, and insulating materials that reduce noise from the outside. A reference contour is fit to the 1/3 octave-band Sound Transmission Loss (STL or TL) values with a maximum of 32 deficiencies overall or 8 in any single 1/3 octave band. Address: 6301 N Florida Ave Tampa, FL 33604 OITC* Frequency (Hz) 100 125 160 200 250 315 400 500 630 800 1000 1250 1600 2000 2500 than glass, including the framing, the glazing gaskets/sealants, insulating glass unit spacer and sealants, and possibly interlayers. The ASTM E90 standard is used for measuring both, and the same types of products are rated using the same numerical rating scale. Call: (360) 334-4107 glass constructions only. dop cujtb shocztc ynf xiqt moado nvditeb nfcurw obrc benzr jep sxinwe bngrmk atlvb vzsn