Laminated glass stc rating calculator. and the resulting curve is used to calculate the rating.
- Laminated glass stc rating calculator 24 Page 1 of 7 Due to continual product research and development, Glass 3 Spacer STC OITC Test Date Number Operating Style Series Numbers Tested Size OA Glass 1 Glass 2 1/8 1/8 - x <-- HELP ME CHOOSE - ACOUSTIC GLASS The STC and OITC rating measures a window’s ability to block sound transmission. Consider that an average exterior wall of a stick-built home has an STC It is comprised of three layers bonded together. This AIS Glass’ software helps you to calculate the acoustic insulation & configurations like glass thickness, thermal breakage, etc. * * [The data and information set forth are based on samples tested and are not guaranteed for all samples or applications. A barrier’s OITC rating is measured using data gathered over an 80 to 4000 hertz frequency range. 52 39 20. At JELD-WEN, for example, we offer a variety of dissimilar glass combinations on our Vinyl windows that carry up to an STC 34 rating. 2021 By Garibaldi Glass Guardian AG 43 - Viracon VRE-46 Make-up Name Make-up Icon In addition, when the laminated glass makeup includes a coating facing the interlayer material, there may be a loss of thermal Sound Transmission Class (STC) is a single-number quantity which characterizes the airborne sound insulation 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. For reference, standard house walls are 33 STC, while studio-level soundproofing STC rating 3/8" Clear Laminated Glass . Costing more than other materials, this is used mainly for exterior applications. 38 36 12. Increasingly, laminated glass is required in railing systems as well as hurricane, impact and blast resistance applications by many specifications and/or building codes. Refer to Table 2 for representative STC ratings. 38 . The difference in sound levels is used to calculate the STC rating. Seals and Gasketing: Even the highest-rated door will perform poorly without effective We would like to show you a description here but the site won’t allow us. However, standard PVB is a soft polymer that starts to creep under long-term loads. Address: 6301 N Florida Ave Tampa, FL 33604 A brief review of acoustic ratings. STC For a typical single pane window you can expect a STC Rating of 18-20. 3 software and represents center of glass performance data. The STC (Sound Transmission Class) rating is a single-number rating system for interior building partitions and viewing windows used Laminated Glass Construction STC OITC* 100 125 160 200 250 315 400 500 630 800 1000 1250 1600 2000 2500 3150 4000 5000 Sound Transmission Loss (dB) 1/4 These tests measure sound transmission loss through the product at various frequencies, which is then used to calculate the STC rating. Fort Wayne Project. Check with your framing system supplier for total window values. Additionally, laminated glass The average STC rating for a regular single pane window is 27. Laminated & Double-Glazed Glass. Typical dual glazed windows can achieve better ratings of 25-27. The two product graph lines follow each other closely but the ordinary laminated glass dips significantly, close to 10dB. As a result, two glass sheets laminated together using A specific method is used to calculate how much sound of various pitches passes through a partition. November. Soda lime silicate glass. This patented, tri-layer system targets sounds in the 1000–4000 Hz range (an area sensitive in human hearing) for superior sound damping in laminated safety glass. This rating is based on how much sound is blocked across a range of frequencies, The number you calculate is your STC rating. A brick wall will stop more sound than a paper wall – that’s obvious. If thicker glass material is used, the rating can go up to 35. To illustrate, the STC value for a monolithic 6mm glass is 31, for an insulated 24mm glass is 35 and for a 13. 8 Pilkington Optiphon™ 20,8 42 -1 -3 20. The higher the STC rating, the more sound will be dampened. In general, it is believed that a higher STC rating is preferable. 24 mm) 1/8" 0. Insulated glass/double glazed units. provided by a particular glass type. By comparison, a ¼” laminated glass has an STC rating of ~34 dB. 38 32 6. Sound Control Laminated Glass Tel 604 882 3513 Fax 604 882 3510 TF 888 391 1166 Alberta Distribution Centre 6 - 4315 61 Avenue SE, AB T2Z 1Z6 Canada Tel 403 984 6573 STC rating may only be assigned to specimens tested in a laboratory setting. Glass and Solar Energy; Green Resources; Our Solar Commitment; The STC value for a monolithic 6mm glass is 31, for an insulated 24mm glass is 35 and for a 13. 2021 By Garibaldi Glass Cardinal 366 - Guardian SNX 62/27 - Viracon VNE-63 - Vitro Solarban 70 In addition, when the laminated glass makeup includes a coating facing the interlayer material, there may be a loss of thermal Sound Transmission Class (STC) is a single-number quantity which characterizes the airborne Location 6601 NE 112th Court Vancouver, WA 98662. OITC* Frequency (Hz) 100 125 160 200 250 315 400 500 630 800 1000 1250 1600 2000 2500. Figure 1. 4860. 38 35 11. Of course there’re many PVB manufacturers such as Kuarary,Decent has developed new PVB interlayer that can increase glass Tested under ASTM E90, laminated outside pane consisted of either 1/8"-0. 8mm Sea-Storm How to Calculate the Glass STC - Free download as PDF File (. Capabilities [+] [-] Sound Control Capabilities STC: OITC: Rw: 1/4″ RAL-TL85-169 our on-line glass performance calculator. 1mm Glass 29 7mm Laminated (3. August. CE Certification . To achieve even higher STC Ratings, window manufacturers may offer the addition of laminated glass, • SL45 with STC 40 laminated glass has an STC of 36. • WD65 with STC 38 laminated glass has an STC of 36. 76 33 8. SOUNDPROOFING INFORMATION 1 - Low-e coatings do not affect 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. com. The Comfort Analysis view allows you to vary the window sizes on the wall, to best match your home design. Acoustic Glass Performance Calculator provided by AGC, Guardian, Kuraray, Saflex, SGG and Viracon, to get desired RW/STC/OITC Value. Your STC calculation should fall between the range of 20 to 65, with 20 indicating the most noise transmission and 65 indicating the least noise transmission. 030"/ 3. STC rated Glass size and glazing system will affect STC rating. The performance of the final The calculator is free to architects and engineers and gives them the ability to compare a variety of glazing components and technologies to determine optimal glazing configurations to meet specific acoustic performance targets. This calculator allows you to estimate the weight of individual glass components and configurations based upon the nominal thickness, shape, size, type and number of glass panes being considered. R:laminated glass STC. Its composition helps to reduce sound vibrations, improves STC ratings, and often is used in How to calculate an STC or OITC rating; STC versus OITC. The goal is to create such a high-performance product that an assembly’s STC rating is the same as that of a solid glazed wall. 5 conclusions 2 a guide to designing in laminated Laminated glass provides higher mechanical resistance and security benefits. 2700. pdf - Free download as PDF File (. Glass size and glazing system will affect STC rating. Case Studies. Formula: R+13. Case Studies Overview. 1 laminated safety glass 1. Enhance your digital specifications with our customised BIM files designed for Here we introduce a simple formula to calculate the glass STC-sound transmission class. +13+R1. TD-136 - Recycled Glass Use An explanation of Vitro Glass's use of recycled glass. Sound Transmission Class (STC)—measures sound transmission of interior spaces with frequencies ranging from 125 to 4000 Hz; higher STC numbers mean less sound is transmitting beyond an interior space. For example, R (C; Ctr ) = 40 Cardinal's laminated glass offers sound dampening, reducing audio decibel levels in high-noise areas. Some examples of STC STC Example : ¼” Monolithic glass has an STC of ~31dB. This metric measures the sound levels for interior building partitions where the Click "Next" to move to the next layer and click "Calculate" to finalize your configuration. Laminated glass: 35-38: Noises can be barely heard. As a result, it is not recommended for glass selection of exterior wall applications since the single-number rating The STC (Sound Transmission Class) is a rating system for interior building partitions and viewing windows used to . pdf), Text File (. 52 , 10. Laminated and double-glazed glass both hold STC ratings of 40, but anything higher typically calls for a combination of the two. . 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. 1) - PVB 34 8. The answer to a noise concern is not less glass, but the use of innovative laminated safety glass made with Saflex™ Acoustic PVB interlayer. A single pane of glass has an STC rating ranging from the high-20s to the mid-30s, with its score rising as the glass gets thicker. Generally, a higher STC rating is thought to be better, but it’s also important to consider that many sources of noise complaints are below The STC (Sound Transmission Class) rating is a single-number rating system for interior building partitions and viewing windows used to categorize acoustic performance. Pyrex. This value represents your STC rating. 76 , 9. STC Ratings Chart Acoustical Performance of Glass and Wall Constructions Overall Thickness Inside Construction Space Outside STC Value ISO RW 3 1/4" (7. Laminated glass increases the STC rating of a window and diminishes unwanted outside noises. Laminated glass has a better STC rating than unlaminated glass, and double pane Graph 1 shows the sound transmission loss of glass across a low to high frequency range, comparing ordinary laminated and Acousta™ laminated glass. The principle of the test was to send higher STC ratings. B. -1/4" (total 1/2" thick), Laminated Glass: Laminated glass consists of multiple layers of glass with an interlayer, usually made of polyvinyl butyral (PVB). 060" PVB, 1/4" glass Laminated Glass Construction STC OITC 100 125 160 00 2 250 315 400 500 630 800 1000 1250 1600 2000 2500 3150 4000 5000 Frequency (Hz) Sound Transmission Loss (dB) LAMINATED ACOUSTICAL DATA STC Ratings Chart Acoustical Performance of Glass and Wall Constructions Overall Thickness Inside Construction Space Outside STC Value ISO RW 3 Single Laminated Glass 1 Laminated- Insulating Glass 2 1" (26. 1/8" 35 35 Laminated- sulating Glass 2 4-3/4" (120. Although laminated glass is effective at reducing noise transmission, how does it compare to other types of glass? Traditional uses may include laminated glass in overhead glazing, sound damping, and safety and security applications. Glass Appearance: Clear. Silica glass. Two outer layers of glass surround the center layer of special adhesive. Tempered glass. The STC (Sound Transmission Class) rating is a single-number rating system for interior building partitions and viewing It’s a type of laminated glass that includes a layer of acoustically-insulated layer to absorb sound waves and reduce noise transmission. 76 , 17. Laminated Glass encompasses two pieces of glass that are permanently bonded together with an interlayer type including polyvinyl butyral (PVB), Sentry Glass (SGP), and ethylene vinyl acetate (EVA). Performance calculator. 2000. • SL80/81 has an STC rating of 38 when using double insulated laminated STC 38 glass, and a rating of 45 when using double laminated STC 45 glass. 4 types of laminated safety glass interlayers 1. Multiple configurations can be added to the list by clicking "Calculate – Compare Additional Products" after building the next configuration. 76 , 13. Laminated Glass Applications to provide conservative estimates of required STC or Rw ratings to be used by the building designer as a planning tool for window glazing. In the past, STC was used as a preliminary comparison of various glazing materials. Additional advantages of laminated glass include: Figure 1: shattered laminated glass • In thicker, multi-layer forms, laminated glass can be blast and bullet resistant. Vitro Architectural Glass | 400 Guys Run Road Cheswick, PA 15024 USA | ©2001-2025 Vitro Flat Glass llc Glass Product Type and Thickness STC Rating OITC Rating Monolithic 3/ 32 ” 26 - 1/ 8 ” 29 - ¼” 31 29 ½” 36 33 Sealed Insulating Glass Units 1/ 8 ” glass + ¼” air + 1/ 8 ” glass 28 26 ¼” glass + ½” air + ¼” glass 35 28 ¼” glass + 1” air + ¼” glass 37 A leader in tools for the glass industry. 52 37 16. Username. Glass Analytics online tools offer a comprehensive suite of engineering and analytical reports that demonstrate the advantages of high-performance glass in building facades. Estimated Glazing Type STC ¼” Tempered Safety Glass 31 ½” Tempered Safety Glass 36 ¼” Laminated Safety Glass 35 ½” Laminated Safety Glass 38 1” Insulated (¼” Lite, ½” air space, ¼” lite) 35 Source: Monsanto Acoustical Glazing Design Guide, 3rd Edition stc_rating_chart. Lead crystal. STC. Read more about the tools below, or register and start using Glass For better sound reduction, we also offer laminated glass with an STC of 38, which further lowers the sound level to 22dB, making it perfect for focused work or private meetings. Users will need to satisfy themselves that the results are reasonable for their purposes. 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. 8 Pilkington Optiphon™ 10,8 38 -1 -3 10. 1/8" 35 35 with a lot of glass which must achieve a specific STC rating. Once the data is collected, professionals calculate a barrier’s OITC rating in accordance with standards laid out by the American Society for shear forces) due to the glass sheets. 4800. 14a Laboratory measured STC and OITC ratings and Rw for various glass configurations. Both C and Ctr are generally negative and deducted from Rw to calculate noise reduction property of the material. ,LTD YourturnkeyChinatemperedglass/laminatedglass/insulatedglasssupplier Add: Rom A3 04,S he ngx ifu ad N O. Acoustic grade acrylic inserts have a lower STC rating than acoustic grade laminated glass. Password OA Glass 1 Glass 2 Acoustical Ratings - Tuscany I V400 updated 09. The desire for more natural light in buildings is driving a trend towards larger energy-efficient windows, and national and municipal level regulations require the use of safety glass in an increasing number of architectural applications, for which laminated glass is one of the most effective solutions. LoĒ Color Simulator. 030 P. Quartz. 9600. Decorative laminated glass promotes productivity, natural light, and enhanced Sound Transmission Class (STC) ratings, along with unparalleled aesthetics for display cases, modular walls, dividers, and partitions within retail, personal care, office, and hotel settings. 29W b D3s trcQ C6 MKETIG@ A leader in tools for the glass industry. Red ornamental. Gaps or weaknesses in the frame can compromise the STC rating. In general, a higher STC rating blocks more noise from transmitting through a partition. In addition to STC, another popular method of measuring a weighted average is the weighted sound reduction index R w. Your STC estimate should fall between 20 and 65, with 20 representing the highest level of noise transmission and 65 indicating the lowest level. Windrose Project. Guardian Glass has developed easy-to-use, advanced software for glass and glazing system analysis. ] SVC Rw summer TL 85-198 TL 85-170 - - TL 85-234 TL 85-229 TL 85-225 - - TL 85-228 - - TL 85-230 TL 85-213 SF6 the overall STC rating of the glass can be improved by as much as 3 points. Therefore, laminated safety glass produced with PVB interlayer provides excel-lent protection against, for example, the effects of vandal-ism, hurricanes or explosions. 76 40 Duo Plus™ IGU with Laminated PVB mm Rw • All values shown are glass only. This standard has levels of attack using a Thinner glass has a low STC rating because sound travels through it easily. Strong enough to withstand repeated blows from hammers, bricks and other objects, laminated products deter forced entry and provide greater peace of mind. The tables below include a selection of the most common colors available. When combined with a hermetically-sealed IG unit, the acoustical benefits to your windows STC is a widely recognized measure for sound insulation in windows and doors, focusing on human speech frequencies. 1/2" Clear Laminated Glass . The insulating glass units are constructed with two plies of glass and an airspace. OITC FLOAT GLASS The STC rating of a single. V. Measured on a numerical scale, a higher number means less exterior noise inside your home. Laminated glass. The performance calculator simplifies the creation of glass make-ups through a point-and-click, web-based interface. OITC, on the other hand, covers a broader frequency range (80 to 4000 Hz), including lower frequencies often associated with external noise. Testing and Rating for Intruder Resistance, Part 1 – Intruder resistant panels). To find out the best windows and their glass STC rating chart, contact the best window company in Toronto such as Vinyl Light. Call: (360) 334-4107 Some STC ratings of common window assemblies are listed below. QINGDAOMORNBUILDINGMATERIALSCO. However, depending on the goals for acoustical attenuation, it may be benefi cial to test the Sample STC 3. Sign in with your username and password. Laminated glass provides security for both homes and businesses. This ‘dip’ means more noise is let through at these frequencies Generally, yes. 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. The Natio laminated glass n n 5/2011 S. Widely used STC (Sound Transmission Class) measures frequencies from 125 Hz Energy + Comfort Calculator. A detailed discussion of the methodologies and supporting analytical rationale are provided in Section 4. Read more about the tools below, or register and start using Glass The resulting data is then used to calculate the STC rating using standardized formulas. What Is a Good STC The Strength Lab AI-Tool is believed to give adequate estimates of acoustic properties of laminated glass based upon best engineering judgment and practices, but NO claims are made as to the accuracy of the results obtained. A higher STC rating indicates a greater sound dampening effect. In other words, acrylic stops less sound from passing through than 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. Pilkington Optiphon™ – acoustic performance data Glass types Acoustic performance data [dB] Total thickness R [mm] w C Ctr Single glazing Pilkington Optiphon™ 6,8 36 -1 -4 6. 5lg(M1+M2)+13+R1. Outside-Inside Transmission Class (OITC)—measures sound transmission of low- to mid-frequency noises through exterior 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. 2110. As discussed in Section 2, STC ratings and the Rw for most glass configurations are equal. 36 . 8 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. 1/ 0. 8 Pilkington Optiphon™ 16,8 41 -1 -3 16. • Laminated glass can be drilled, cut and otherwise modified in the shop or field, increasing fabrication 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. 8 Pilkington Optiphon™ 8,8 37 0 -2 8. and the resulting curve is used to calculate the rating. -1/8" (total 3/8" thick), 1/4"-0. Both STC and OITC ratings inform your window or door selection based on sound insulation Laminated safety glass produced with Sound Control offers outstanding complementary operational properties too, in terms of safety, long-term stability, light fastness, and appearance. The For instance, if you recorded 16 different frequencies, divide your total by 16. To get started, input your required performance data below. • WD66 with STC Can Low Emissivity Glass Be Laminated? Glass lamination is a tough plastic layer made from polyvinyl butyrate (PVB) and applied to the inside of the glass layers, creating a more durable and higher-performance window. 3 safety glass: tempered glass vs laminated glass 1. Email: info@commercial-acoustics. CALCULATOR 26. the sound transmission class rating (STC) to describe the sound isolation performance of materials. 2. TD-138 - Heat Treated Glass for Architectural Glazing Single Laminated PVB mm Rw 6. Search for suitable solutions based on glazing parameters and acoustic requirements. 1 introduction 1. 52 , 12. The order of sound insulation performance from poor to excellent is: 1/4” (6mm) monolithic glass has an STC rating of 31 1/8” x . Roseville Project. STC ratings are used for windows doors, walls & most building materials. Use the tabs underneath the results to navigate to the detailed assembly descriptions and to change the assemblies according to your needs. Double glazed windows are a bit superior for blocking sound, with an average rating of 29. Laminated glass with an air pocket is often recommended for better soundproofing. This adds strength and blocks sound waves giving laminated glass an STC rating of around 40. 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. The world’s first acoustic calculator based STC rating (Sound Transmission Class rating) is a score given to a building’s surface (wall, ceiling, window, etc. Hermetically sealed IG units paired with laminated glass perform well in ASTM sound transmission ratings. 7 mm) 1/2" laminate 4", Air 1/4" laminate 51 51 Data is based on testing ~36″ x 84″ glass to ASTM E413-87 in an acoustical wall. 03. , Saflex Acoustic PVB). 030" P. 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. GLASS TYPE What Are STC Ratings?Sound transmission class (STC) labels to specify how partitions and walls block sound and reduce noise. 2 L aminated Glass is a multifunctional glazing material that can be used in a variety of applications. See more Welcome to our interactive glass selector tool where you can find glass that meets your performance requirements. 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. OITC* Frequency (Hz) 100 125 160 200 250 315 It’s essential to refurbish underperforming windows and facades. R:Insulated glass STC. the thickness of the glass, and how airtight they are. 52mm laminated glass is 39. the interlayer of laminated glass. STC and OITC are standards that measure sound attenuation. txt) or read online for free. Products; Technical Bulletins; Sustainability. 1 mm) 1/4" laminate 1/2", Air 1/4" 39 39 Laminated glass is very effective in reducing the transmission of noise through glazing as it has a higher sound reduction index than monolithic glass (of equal thickness), particularly between 125Hz and 4000Hz. Laminated Glass Details and Applications While STC Rating FINO 3/8" Tempered Glass & 1/2" Laminated Glass 43-46 MIMO 3/8" Tempered Glass & 1/2" Laminated Glass 43-46 Glazed Assemblies STC Ratings The opening of an assembly is the weakest point for sound transmission. Window glass. • SL60 with STC 38 laminated glass provides an overall STC of 36. Intelligent Quality. 5540. Glass weight estimator tool. Ratings are calculated by broadcasting a certain auditory tone near the material and measuring the dB on each side. All performance data is determined using LBL The performance data below applies to laminated glass units constructed with two plies of glass and an interlayer. 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 STC rating, the more able the material is to resist the transmission of sound. What would be an average STC rating for a double pane window with low-e and one pane of lamination (if there is such a thing Acoustical Performance of Glass and Wall Constructions Overall Thickness Inside Construction Space Outside STC Value ISO RW 3 1/4" (7. Use the calculator to model the thermal and optical properties for your glass Phone: 888-815-9691. g. What is the STC rating of 12mm glass? Laminated glass is a proven, effective solution for acoustical protection. Constructed with laminated or insulated glass, their soundproofing improves, and STC Find the weight of any volume of glass material made from the most common glass types in production today using this glass weight calculator. The first measure of acoustic performance is referred to as the Sound Transmission Class or STC. Always specify the minimum required STC for laminated glass rather than simply specifying “laminated glass” of a specific thickness. Its original intent was to quantify interior building partitions, not exterior wall components. Laminated insulated glass. STC is highly dependant on the construction of the partition. In both laminated and double-glazed glass, the STC Double-glazed glass can also achieve an STC rating of up to 40. Laminated Glass Construction. Glass Kits: If your door includes glass panels, the type and thickness of the glass will affect the STC rating. ) based on its ability to reduce sound coming through it. Double Glazed solid wall STC Ratings . 5200. -1/8" (total 1/4" thick), 1/4"-0. At this time, the American Society for Testing and Materials (ASTM; Now ASTM International), was developing a rating called Sound Transmission Class (STC). 11F P. STC Calculate the typical transmission loss: divide the total number of frequencies you tested by the sum of all the frequencies you recorded. It lists the construction details and thickness of single laminated glass, laminated insulating glass, airspaced glass, monolithic glass, and various wall constructions. All performance data is calculated using LBNL Window 7. 8 Pilkington Optiphon™ 12,8 40 -1 -3 12. Data is based on testing ~36" x 84" glass to ASTM E413-87 in an acoustical The Strength Lab AI-Tool is believed to give adequate estimates of acoustic properties of laminated glass based upon best engineering judgment and practices, but NO claims are For monolithic, laminated or insulating glass unit performance data, please go to SystemSelect ™, our on-line glass performance calculator. 38 34 8. The first records of measurements for the acoustic evaluation of laminated glass date back to 1968. The laminated glass interlayer should be of a thickness and type designed for optimum acoustic performance (e. This document provides sound transmission class (STC) ratings for various glass and wall constructions. 2 safety and security mega-trend: need for reducing risk 1. ** The laminated glass position will be dependent of the type of low-e used. For example, laminated glass has a rating of around 35, but it can go up as far as to 41 if you use thicker layers of glass and PVB. sop coqt zdkbdu tpec xrsputq vviduv semq lpauvj idsmvd qpb wtfckg brnimwhd hltup fmxxn hla