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Stc Glass, Insight Glass installs Homeowners often pay for soundproof glass with price ranging by glass type, thickness, frame choices, and installation complexity. Discover the best soundproofing acoustic doors in Singapore to enhance privacy and reduce noise transmission. For reference, standard house Learn what STC ratings mean, how they're measured, and what rating you actually need for soundproof windows. STC stands for Standard Test Conditions and is the major solar panel output performance testing condition used by most manufacturers and testing bodies. STC stands for Sound Windows with a higher glass-to-frame/sash ratio are likely to perform better, especially if the glass in the window is designed to achieve a higher STC rating. ASSA ABLOY offers hollow metal doors and full 35 STC reviews. It seems Milgard discontinued their Quite Line Series with STC 44+. The Our Generation 4 folding glass wall can achieve STC 45 acoustic isolation. QuietLite Windows from Noise Barriers. Block noise with durable soundproof windows for studios, homes, and offices. • STC (Sound Transmission Class) is a numerical STC and OITC results determined in accordance with ASTM E 90, Laboratory Measurement of Airborne Sound Transmission of Building Partitions, and ASTM E 1332, Determination of Outdoor-Indoor The acoustical performance of windows and doors is infl uenced not only by the glass but also by the framing members and construction of the window assembly. For Can increase the STC rating of a double-layer, steel-framed partition from 29 to 53 STC An integral part of high-performance USG partition designs for attenuation of low-frequency sound from machinery Learn the differences between Rw vs STC sound insulation ratings and how Glasvue delivers optimal glass acoustic performance for global building projects. Block out urban noise! Learn how to maximize your glass STC rating with acoustic lamination, optimal air gaps, and proper seals for ultimate silence. Six Things You Understanding Sound Transmission Class (STC) Rating Posted by Acoustical Surfaces on November 30, 2025 3:29 pm | 2 Comments If you’re All of our StudioMax™ Window and Door products hold world records for their high STC values. One of the features of glass is sound proof,whether it’s Our "standard" window frame is 1. Compare STC ratings, standard vs. An STC (Sound Transmission Class) is a single number rating system derived from measured STC Ratings Chart Acoustical Performance of Glass and Wall Constructions Single Laminated Glass 1 Laminated- Insulating Glass 2 Airspaced Glass 1 OUR PRODUCTS Operable Wall Operable Wall Microfold Acoustic Partition Systems MODEL:MICROFOLD CLASSIC 45 – STC 40-45 dBMICROFOLD We would like to show you a description here but the site won’t allow us. STC 28-30 is typical for aluminium windows (loud speech clearly understood), STC 35-38 for standard uPVC (normal speech STC Rating is your noise benchmark. Salaries, reviews, and more - all posted by employees working at STC. Arcadia Window Systems Arcadia projected windows are available glazed with a variety of glass configurations. Sound Transmission Basics Single Glazed 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. The soundproof glass price typically reflects material HELP ME CHOOSE - ACOUSTIC GLASS The STC and OITC rating measures a window’s ability to block sound transmission. Includes an STC chart, window comparisons, and Here also intriduced how to calculate the STC in the different glass configurations. These Ever wonder what the STC Ratings of Doors means and why it’s important? Street noise, people and pet noise, TV, radio, everywhere we go Sound Transmission Class (STC) is the rating system used to determine how well various products block sound. The STC score of a door is 30 to 33, that of a window is about 18-20, and an exterior wall of a new home is 55. As a leading provider of soundproof We offer a selection of high-quality STC-rated acoustic doors & windows that are engineered for sound transmission loss. 37 likes · 1 was here. Sound Transmission Class (STC) is a single-number rating system that assigns a value to a product to indicate how well that product insulates against unwanted noise within the frequency range of speech After sealed IG units svere installed into the laboratory test opening, the first glass panel and wood spacers were used to complete the triple glass configurations. The Definition of STC and Its Importance in Solar Panel Evaluation What Are Standard Test Conditions (STC)? Standard Test Conditions (STC) are At Modernfold, we offer innovation in space management and room design with our Acousti-Clear® product line. Laminated glass also has a thick interior pane Every optic STC produces has our patented Ultra Layer© coatings on both sides. To continue on What is an STC rating, and how does it affect the products you choose? Learn everything you need to know about STC ratings for windows and doors in our guide. Double-pane windows often use a special odorless, nontoxic and clear Sound Transmission Class (STC) ratings are determined through standardized acoustic testing that measures how well a building element reduces airborne sound transmission. Smart Dimming Glass Partitions The Future of Dynamic Spaces Technology PDLC (Polymer Dispersed Liquid Crystal) film Transformation NoiseStop Systems Singapore specializes in providing innovative acoustic and soundproofing solutions to create tranquil and noise-free environments. Reduce noise by up to 45dB with our STC-rated acoustic windows. With the widest offerings on the market and a customer Designed with cutting-edge technology, Acoustical Openings by Ceco Door provide premium sound control solutions for a wide range of applications, including government, military, healthcare, . 35%/year after · Premium warranty · LR7-54HVD (Dual Glass) 475~495M “ what stc ratings are available ” Question Answer Resolution: STC stands for Sound Transmission Class. Cloud Window has been perfecting the design and function of superior-performing acoustic windows for more than 25 years. With its unparalleled heat rejection and visual STC Films STC Infinity Series Introducing the Infinity Series – the epitome of excellence in glass tinting films. GLASS AND INTERIOR COMPANY LIMITED. ABOUT US SOLAR TECHNOLOGIES CANADA & STC GRAPHICS SOLAR TECHNOLOGIES CANADA & STC GRAPHICS are a division of STC GLOBAL LONGi SOLAR · Efficiency: 24. Expert installation, free consultation & quotes. A practical guide to STC door ratings: compare door types, understand sound insulation factors, and choose the right level for your space. This set of doors will give you an STC of 65 with incredible low frequency noise reductions. Combine laboratory-rated STC As applied to windows and patio doors, the STC measures (in decibels) how much sound is lost from one side of the window or patio door unit to the other. Acoustical Laboratories TEST NO. the sum of Window STC ratings explained: learn how Sound Transmission Class measures noise reduction for homes near SFO and OAK. A higher number means less Summary This article clarifies how Sound Transmission Class (STC) and Outdoor-Indoor Transmission Class (OITC) function in modern luxury architecture. The OITC/STC ratings improve with the addition of more lites, Glass Acoustical Information The acoustical performance of windows and doors is influenced not only by the glass but also by the framing members and construction of the window assembly. Smart film has evolved over the years from matte white, now What is STC and Why Does It Matter? The Sound Transmission Class (STC) is a numerical rating that quantifies how effectively a building Learn more about how the STC ratings for MetroWall's premium glass wall systems compare and which solution is right for your needs. These windows come with fairly decent air seals, and it is the glass thickness and the 35 STC reviews. Sound Transmission Class (STC) ratings for glass indicate how well a partition, wall, or window mitigates or blocks sound and reduces noise. Our St. STC (Sound Transmission Class) measures soundproofing effectiveness. GLASS AND INTERIOR COMPANY LIMITED of THUNG KHRU, BANGKOK. The most valuable part of utilizing double paned glass is actually the distance between the two panes; as the air space STC Aluminium & Glass Sdn Bhd, Johor Bahru. But what is an STC rating, and what does it mean for your home? An STC rating is an important factor in keeping your home peaceful and quiet. Compare costs, benefits, and STC ratings, Sound Transmission Coefficients, are the measure of resistance to sound. This week we’ll discuss how all of the materials in a piece of fenestration Sound transmission class (STC) and Outdoor/Indoor Transmission Class (OITC) are measured in decibels (dB), and are the standard method for rating sound STC GLASS AND GLAZING LTD - Free company information from Companies House including registered office address, filing history, accounts, annual return, officers, charges, business activity Discover how acoustic glass systems reduce noise transmission and learn about STC ratings for effective sound management in various environments. ) based on its ability to reduce sound coming STC is More Than Just Glass: The Critical Role of Frame Material Sound Transmission Class (STC) ratings measure a window's ability to reduce airborne sound. STC 65 Sliding Glass Doors A sliding glass door mounted on each side of your door opening. We cover the different types of window panes and the materials of each. Explore top-rated options and professional Sound Proofing SOUND TRANSMISSION CLASS STC (Sound Transmission Class) is an integer rating of how well a partition (medium) attenuates airborne sound. Gain important insights of STC ALUMINIUM & GLASS SDN. When installing glass wall systems, here’s what you need to know about STC ratings and sound transmission. 44 STC and 37 OITC Thermo Clad Sanctuary Glass tilt-turn windows 44 STC and 35 OITC American Heritage Simulated Double Hung (SDH) Sanctuary Glass tilt In order to understand what constitutes a strong STC or OITC rating for a sound control window, it helps to have a general understanding of where the most common single and double-pane windows fall on Cardinal's laminated glass offers sound dampening, reducing audio decibel levels in high-noise areas. Learn how STC ratings, laminated glass, gas fills, and window design reduce noise by up to 90%. An STC rating is an important factor in keeping your home peaceful and quiet. e. What is STC? What is STC? STC is Sound Transmission Class which is a single number rating derived from individual transmittance losses at specified test frequencies. Don't overspend on generic 3-pane windows; the highest acoustic performance comes from strategically engineered laminated glass and asymmetric Laminated glass does help improve the STC rating of a window or door, helping to eliminate more of the unwanted, outside noises. . ' The insulating glass units are constructed with two plies of glass and an airspace. While glass alone is simply a faint noise insulator, additional fabrication processes can be implemented to In this post, window replacement experts Renewal by Andersen® of Western New York discusses STC ratings and what rating is the best for windows. 52mm laminated glass is 39. Our Ultra Layer technology chemically strengthens the glass and also makes Sound Transmission Basics Single Glazed 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. Noise Reducing Window STC Ratings STC (Sound Transmission Class) ratings are an established way to average how much sound is stopped by something. For example, single pane glass typical STC Value Complete guide to understanding STC ratings from 25 to 60+. Operable Wall Acoustics 101 Operable Wall Acoustics 101 is a combination technical and day to day commentary on acoustics as they apply to moveable The STC Dichroic Series Exotic Film is particularly noteworthy, as it creates a stunning, ever-changing color effect on flat glass surfaces. With acoustic glass partition systems, experience a seamless blend of modern aesthetics and powerful sound control. STC rating from 43 to 64. T. Using our breakthrough technologies on soundproofing and Noise levels A window with an STC rating of 34 can reduce exterior noise by 43%, bringing many loud outdoor noises down to a comfortable level, which is typically STC Films STC Infinity Series Introducing the Infinity Series – the epitome of excellence in glass tinting films. It’s called an STC upgrade. In Purpose This Acoustical Glazing Design Guide has been prepared for the building design professional, manufacturer of Saflex protective interlayer used in laminated glass. To access company info, company size, news , key makers’ emails, visit the profile pages above. FORTUNA SOUNDPROOF WINDOWS Premium UPVC (Unplasticised PolyVinyl Chloride) Soundproof Windows and Doors Systems our Double/Triple Glazed Glass and even Built-in-Blind Read More From dual pane windows, the STC can go from 26 to 33. This guide includes the most Soundproof door Singapore with STC ratings from 45 to 75 dB. From that experience, we Learn more about T500 OPG1928 STC Series (Thermal) and review product specifications from Arcadia Inc. BHD. Don't overspend on generic 3-pane windows; the highest acoustic performance comes from strategically engineered laminated glass and asymmetric This document provides sound transmission class (STC) ratings for various glass and wall constructions. In 2010, STC was the first to use semiconductor technology to take great optical glass and transform it into something exceptional. glass, wood, concrete) have STC ratings as do multiple components (i. Product Details STC80 Synchronized Telescopic Sliding Door Gear System slides open simultaneously as a single unit with Soft Close Experience the elegance of The STC value for a monolithic 6mm glass is 31, for an insulated 24mm glass is 35 and for a 13. Acoustic Glass Performance Calculator provided by AGC, Guardian, Kuraray, Saflex, SGG and Viracon, to get desired RW/STC/OITC Value. Block 90% noise with acoustic doors for HDB, condos & homes. Sound Transmission Class (STC ) is an integer rating of how well a building partition attenuates airborne sound. Glass STC rating is a measure of how well the glass reduces sound transmission, with the higher rating meaning a greater reduction in sound transmission. In the US, it is widely used to rate interior partitions, ceilings, floors, doors, windows and With a significant accomplishment in architectural acoustics, INFINIUM is thrilled to announce that our Quantum Double Butt-Glazed glass wall system Sound Transmission Class (STC) is a single-number rating system that assigns a value to a product to indicate how well that product insulates against unwanted noise within the frequency range of speech Upgrade your home with stc rated glass doors and windows to reduce noise, increase value, and boost comfort. acoustic glass prices, and learn why professional sealing matters to protect your home. Here is all you need to know about STC ratings for windows. Glass often makes up the largest area of an We offer innovative solutions to optimize your space in Singapore with our premium selection of operable doors and walls. pdf), Text File (. There are variances to consider for each construction project as STC ratings will be different in onsite conditions as opposed The products in this bracket include our SL45 with STC 40 glass, SL60 with STC 38 glass, WD65 with STC 38 glass, WD66 with STC 38 glass, Acoustical Performance of Glass and Wall Constructions Overall Thickness Inside Construction Space Outside STC Value ISO RW3 Looking for technical details regarding our soundproof window inserts & STC ratings? Soundtite is happy to provide details to those who are interested! Sound Transmission Class (STC) is an integer rating of how well a building partition attenuates airborne sound. This system utilizes sleek, aluminum framing. Specific materials (i. With its unparalleled heat rejection and visual light transmissions, our Infinity Series film is the perfect STC Using additional panes of glass is also a method of increasing STC. Glass Partition Wall Systems: Technology & Applications Guide 1. txt) or read online for free. In the USA, it is widely used to rate interior partitions, Acoustic performance up to STC 45 Ideal for commercial, residential, and educational environments Tested according to ASTM E-90 Glass Glazing – Fortuna’s starred Triple Laminated Glass are one of a kind, bringing the acoustic glass to a compressed minimized thickness to achieve a good Sound transmission class gives a single value to acoustical performance for a door. Sound STC Ratings Chart Acoustical Performance of Glass and Wall Constructions Single Laminated Glass 1 Laminated- Insulating Glass 2 Airspaced Glass 1 Discover NanaWall’s Foldflat Glass Doors that stack 180 degrees for a fully open space. Telescoping multi STC Calculator: Acoustic Rating Tool for Walls, Ceilings, & More Quickly estimate the Sound Transmission Class (STC) rating of your wall, ceiling, floor, or glazing See what employees say it's like to work at STC. STC GLASS AND GLAZING LTD - Free company information from Companies House including registered office address, filing history, accounts, annual return, officers, charges, business activity HowtocalculatetheglassSTC? 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 insulated,the Sound Transmission Class (STC) ratings for glass range from low to almost soundproof. Luminous (tm) movable glass walls offer unlimited space design versatility, add sound control and a unique vision element to your space. STC-upgraded glass We offer a type of window glass option that’s specially designed to reduce sound. Our high STC rating doors are factory assembled and tested in NVLAP accredited labs. STC-rated, fire-rated options. These include 1" insulating glass (1/4" glass - 1/2" air space - 114•glass) with an STC To achieve even higher STC Ratings, window manufacturers may offer the addition of laminated glass, dissimilar glass and other sound dampening components to PC350 STC Ratings (RGB) STC RATINGS How to Calculate the Glass STC - Free download as PDF File (. Select materials and configurations for accurate results. A Sound Transmission Class (STC) rating measures how much sound (in decibels) is stopped by a partition, such as a window or wall. Discover the best soundproof replacement windows in Canada. For double pane, glass thickness is the big determiner of the STC rating. Glass in building – Heat soaked thermally toughened soda lime silicate safety glass – Part 2: Evaluation of conformity/product standard Specification for fire doors Specification for safety glazing materials We would like to show you a description here but the site won’t allow us. Explore our wide range of high-quality materials and Yes, I would like to receive emails from Operable Partitions and Glass Wall Systems by ModernfoldStyles. Hermetically sealed IG units paired with laminated glass A complete guide to selecting and installing STC windows. Sound transmission class (STC) Yes, I would like to receive emails from Operable Partitions and Glass Wall Systems by ModernfoldStyles. From its modest Authoritative guide to soundproof glass types, STC ratings, and installation techniques for residential and commercial noise reduction. Understanding STC ratings will make your home more acoustically sound. The STC (Sound Transmission Class) rating is a single-number rating system for interior building partitions and Learn how to increase STC with the correct selection of glazing for NanaWall opening glass walls in these sound explanations. A free inside look at company reviews and salaries posted anonymously by employees. Learn more about our products today! STC Infinity Series Introducing the Infinity Series – the epitome of excellence in glass tinting films. Glass is placed inside of the gasketing, and the zipper secures the glass in What is the best STC one can expect from a “glass skinned” wall? As interior acoustical glass moveable wall systems are a relatively new product, there is Studio Sliding Glass Doors Our sliding glass doors offer STC values of 65, making our doors as good as many recording studio walls. Are there other brands you can The higher the STC rating, the less noise is passed through the material - in our case, the door opening. For this reason, Wondering how well your walls can block sound? Use our STC Rating Calculator to instantly estimate the Sound Transmission Class (STC) rating of Premium soundproof windows in Singapore for HDB, condos & landed properties. Soon Heng Glass Pte Ltd was founded in 1990 with its origins as a glass glazing supplier for the local construction industry. Expert Series: Glass Acoustic Performance - page 2 The table shows that the poorest-performing glazing is a single, monolithic lite. C. Excellent performance and stylish forms design. Read on. Noise reduction glass options Besides STC/OITC glass, you can choose laminated glass for noise reduction windows. Click to STC rating (Sound Transmission Class rating) is a score given to a building’s surface (wall, ceiling, window, etc. For effective noise Our STC ratings are for reference only for common wall/door characteristics. STC Rated Glass is glass that has been tested and assigned a Sound Transmission Class (STC) rating, which measures how well it blocks airborne sound. It is used for exterior and interior STC Smart Films Smart Film changes normal glass to smart glass. STC For example, insulated, triple-pane glass, with each pane having the same strength and glass thickness equals a Sound Transmission Class (STC) of 29. The single most important of which is to increase the air gap Zipper Style Glazing This window uses zipper style glazing. Perfect for seamless indoor-outdoor transitions in any home or business. Please reference the below STC ratings chart if you haven't already for a brief overview of the different ratings and what they mean. A directory of building products that provides specifiers and all those involved in the design of buildings in New Zealand with fast access to a comprehensive database of construction materials. Discover the true cost of residential soundproof window installation. Refer to this easy-to-use guide to determine the most appropriate assemblies to meet your Sound Transmission Class (STC) requirements. The high-quality Studio Door offers This is the legal entity page of S. Last week we discussed how glazing can contribute to a higher STC rating. STC ratings are used for windows Use the STC Wall Calculator to estimate the Sound Transmission Class (STC) rating of wall assemblies. This film is designed Clear Tempered Glass What Is Clear Tempered Glass ? Tempered or toughened glass is a sort of wellbeing glass handled by controlled Resolution: STC stands for Sound Transmission Class. It consists of a neoprene gaskets with a locking "zipper" strip. Get a free quote today. Membuat kerja pemasangan untuk aluminium & glass. Free consultation! Browse Arcadia Inc's robust selection of Acoustic products from 13 primary manufacturing locations across the United States It is not always clear what Sound Transmission Class and STC Ratings are and what they mean. Understand the ratings, design factors, and sealing techniques needed for quiet performance. 3 · Low performance degradation: ≤1% first year, ≤0. It includes What Is an STC Rating? Definition: STC (Sound Transmission Class) measures how well a partition blocks airborne sound between adjacent spaces. For a functional and aesthetically attractive ceiling as Focus offer a wide choice of edge designs, forms, levels, colors and sizes that give virtually endless Sound Transmission Class (STC) ratings are a standardized method for measuring the sound insulation performance of building materials and assemblies. With its unparalleled heat rejection and visual The document provides acoustic performance data tables for insulating glass, triple insulating glass, monolithic glass, and laminated glass constructions. But what is an STC rating, and what does it mean for your home? High-STC acoustic window, custom sized and easy to install. STC provides noise ratings from mid-frequency 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 Marvin offers many glass options for your windows and doors, like insulating options, STC, and Low-E window glass coatings, giving you energy efficiency for your home. Complete guide to understanding STC ratings from 25 to 60+. All hardware, glazing, latches, and split frame are ready for installation. An STC 101 complete guide to help you The door profiles are ultra slim and lightweight creating a stylish and contemporary office environment The in-house designed Studio Door Blast Doors Stone clad frameless doorsets Acoustic STC 50 doorsets Sliding & Folding doorsets Radiation Resistant lead line doorsets Concealed Hinge fire The slim-frame acoustic sliding doors come with quality guaranteed ISO-certified laboratory tests. 2" deep (front to back) and can accommodate sliding/operable windows using 1/4" laminated glass or a single removable or fixed 5/8" laminated glass. (You can unsubscribe anytime) Cryptocurrency wallet interfaces for Bitcoin, Litecoin, Namecoin, Peercoin, and Primecoin. - mflaxman/coinkit STC RATINGS FOR VARIOUS WALL ASSEMBLIES Below are the STC ratings of various wall assemblies, each presented to help illustrate concepts, improvements and rules of thumb. (You can unsubscribe anytime) Single Pane 3mm Glass – 27 Thermal Glass with a 13mm Air Space – 28 Triple Glazing 3x3mm Glass with 2x6mm Air Space – 31 bquiet Soundproof Window Acoustic Performance Data Tables Viracon Acoustical Glass is made from combinations of various glass types along with acoustical window frames to help you effectively reduce sound transmission from House of Glass is a trusted partner for glass supply and glazing services in Singapore, connecting homeowners, businesses, and property Sound Transmittance The following establishes a simplified procedure that can be followed by a building designer to make a preliminary evaluation of the minimum required glass Sound Transmission Class STC rated windows for your house will reduce the sound transmission coefficient to keep your home nice and quiet all year long. Other links: Curtain Wall generated by Autodesk Inventor-Part I • Curtain Wall generated by Autodesk Invento STC Rating is your noise benchmark. Measured on a numerical scale, a higher number means less exterior The door has both double and single glazed options available to meet all your acoustic requirements. It lists the construction details and thickness of single DOUBLE LAMINATED INSULATING ACOUSTICAL DATA Double Laminated Insulating Glass When considering architectural design, producing optimal sound transmission class (STC) is paramount for creating spaces that offer tranquility The definitions of two ratings: Sound Transmission Class or STC and Outdoor-Indoor Transmission Class or OITC The project’s design requirements and how Sound Transmission Class (STC) rating, calculated according to ASTM E413, measures the sound insulation of a window or door across the frequency range of 125 to 4000 HZ, primarily Frequently Asked Questions What STC rating is recommended for residential use? Most residential applications benefit from STC STC Ratings Chart Acoustical Performance of Glass and Wall Constructions Single Laminated Glass 1 Laminated- Insulating Glass 2 Airspaced Glass 1 Learn about Sound Transmission Class (STC) and STC Rated Glass Wall Systems with NanaWall sound-rated product solutions for interiors. Learn what level of sound isolation each rating provides and which STC value your project requires. The common space between the 2. Also available in multi-track Professional soundproof doors in Singapore. Offering ultra-sleek, Window STC Ratings There are a number of steps that a manufacturer can take to increase the STC rating of a replacement window. Explore their company registration information, banking payment history, litigation, and trade references to make informed decisions Sound Transmission Class (STC) is a single-number rating that tells you how many decibels of airborne noise a wall, floor, or ceiling assembly blocks. It explains why glazing composition, asymmetry, The finest factory assembled and field proven windows in the noise control industry. Get the latest business insights from STC ratings can be given to the individual materials of which the window is comprised (like the glass for instance), or to the window as a whole. PC350 STC Ratings (RGB) STC RATINGS LAMINATED ACOUS ICAL DATA INSULATING LAMINATED ACOUSTICAL DATA DOUBLE LAMINATED INSULATING ACOUSTICAL DATA Double Laminated Insulating Glass Products and corresponding data in this document are intended to provide comparative estimates between glass configurations. Trusted by Yamaha, Changi Prison & music schools. An STC (Sound Transmission Class) is a single number rating system derived from measured values of sound transmission loss in accordance with I am looking for soundproof windows for my home. Find company research, competitor information, contact details & financial data for S. A window with Insulated glass having one double Tired of noise pollution? Gaap Tuff deciphers the jargon (STC, IIC) & unlocks the peace you deserve with soundproof glass solutions. The STC (Sound Transmission Class) rating is a single-number rating For better sound reduction, we also offer laminated glass with an Sound Transmission Class (STC) rating, calculated according to ASTM E413, measures the sound insulation of a window or door across the frequency range of 125 to 4000 HZ, primarily The Sound Transmission Class or glass STC rating is an integer value derived from laboratory testing that indicates the decibel reduction provided by a glass panel. Back to STC ratings and how they relate to windows: Most windows are thermal and they are made up of 2 pieces of glass (usually 3mm thick) separated by a spacer. 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