Glazing acoustic performance. Poor acoustic performance; Vulnerability to thermal shock .

Glazing acoustic performance Secondary glazing ranges from between 8. At both ends of the spectrum, i. Census Bureau, noise is the No. Double glazing can substantially reduce the noise pollution from the external environment of the building. Reduce Heat Loss Warmth is a valuable commodity and creating a second barrier to the elements is an ideal way to reduce wasteful thermal heat loss. DG41 and SGP do not perform as well as PVB or Acoustic layers; > Sound reduction will improve with the use of glass/ airspace combinations, but the performance is critically dependent upon the width of the airspace. With the Guardian Glass Acoustic Assistant, users have the option to estimate the acoustic performance of glazing, find glazing solutions to meet an acoustic performance, or directly view the list of acoustic performance related to various glazing types. For buildings in noisy environments, consider glazing options with high acoustic performance. Both factors increase the cost of triple glazing and slow its proliferation. Sep 9, 2024 · The testing standards for acoustic performance had to do with how the glazing systems can reduce sound through blockage or absorption. Effect of air space width on the acoustic performance of double glazing. Nov 4, 2016 · Acoustic performance—as measured by a low-frequency-dominated OITC rating—is generally unaffected by the following: framing mass; frame cavity insulation; presence/absence of thermal breaks and vents; and; glazing gasket design. in the mass- and stiffness-controlled regimes, the assessment is rather straightforward. Glazing panels and the methods used to install them have evolved to meet the increasing demands for energy efficiency, sustainability, and innovative design. The best option here are triple-glazed units, constructed from three panes. Learn how it works, types available, installation tips, and more. No frames are utilized in the testing to ensure accurate comparison of the glass configuration can be made without external For the best acoustic performance, secondary glazing is installed with a 150mm to 200mm gap from the main window. The Guardian acoustic assistant is a tool to estimate acoustic performance of different types of glazing. Types of Glass Used. Also, throw in an acoustic trickle vent, wood or vinyl frame, and plenty of acoustic caulk. The first step is determining what type of noise you are dealing with. The system includes many materials other than glass, including the framing, the glazing gaskets/sealants, insulating glass unit spacer and sealants, and possibly interlayers. Acoustic Insulating Glass. Blinds and ornaments can still be displayed on the windowsill as secondary glazing is slimline and unobtrusive. The desired acoustic performance can be achieved through combining various thicknesses of glass with a special PVB (polyvinylbutyral) interlayer. In If you want to find the technical performance such as the light, thermal, or acoustic values etc. Single-glazed facades contain one glass panel. 38mm standard laminate, offering thinner glass options with superior acoustic performance. (High-frequency sound absorption using between-glass acoustical foam is helpful in increasing STC only when Nov 6, 2024 · Further, channel glass can meet acoustic performance goals on both sides of the building façade with Sound Transmission Class ratings up to 44. Low-E Glass The Guardian acoustic assistant is a tool to estimate acoustic performance of different types of glazing. As the world´s only supplier of mono- and multi-layer PVB, Kuraray can help you customize your sound insulation levels. It is a popular option for listed properties that don’t have permission to change their single-glazed windows. Acoustic Insulating Glazing. Beyond this, the glass is laminated. To achieve this with a conventional double glazing width (about 28-35mm only) we have to employ an acoustics interlayer or a sort of resin between two panes in a laminate glass combined within a DGU. Call 01428 748255 today to arrange a consultation Acoustic Glass Defined. Determine the glazing system that has the best noise reduction properties. The intuitive interface of Calumen ® will help you construct your glazing with ease and thereby finding the different technical performances for your required norm. An airspace of 100mm is generally regarded as a minimum for reasonable benefits at medium to high frequencies. Feb 11, 2025 · Acoustic Performance in Windows According to the U. Compliance and Certification The sound from a vehicle measures around 70 Decibels (dB), while a siren is around 110dB. Acoustic Performance. Jun 6, 2024 · Discover the benefits and applications of acoustic glass, the ultimate solution for noise reduction, energy efficiency, and security. The acoustic performance of soundproof glazing is greatly improved by increasing the gaps between the glass. 8 6. The acoustic performance of glazing systems is greatly influenced by the type of glass, its dimensions, its density, the right order of glass panes and the cavity between them. Double glazing: 10 - 16 argon - Pilkington Optiphon™ 12,8 Rw = 44 dB; Double glazing: 12 - 20 argon - Pilkington Optiphon™ 8,8 (44. Pulp Studio CEO Kirk Johnson explains that all STC and OITC ratings are values only for the center of the glass. 8 Secondary Glazing: 6. Durability and fitness for purpose Sep 8, 2023 · For the best performance, use 2 panes of different thicknesses for different resonant frequencies. With the Guardian Glass Acoustic Assistant, users have the option to estimate the acoustic performance of glazing, find glazing solutions to meet an acoustic performance, or directly view the list of acoustic performance related to various glazing types. Estimation of acoustic • Butt jointed glazing options available • Supplied in a white primed finish as standard PERFORMANCE • Fire rated in accordance with BS 476 Part 22: 1987 to FR30 & FR60 (Glass can be supplied as integrity only, or integrity and insulation) • Acoustic tests of non-fire and fire-rated / safety glass in accordance with BS EN ISO 140:3 1995 Nov 4, 2016 · By comparing exterior noise levels with interior requirements, and considering background noise levels, a project’s required level of window or curtain wall acoustic performance can be inferred either in specific frequency bands or by using one of the single-number rating systems described in this article. 8 Pilkington Optiphon™ 12,8 40 -1 -3 12. Proper glazing thickness and materials can significantly enhance thermal performance, reducing energy consumption for heating and cooling [9]. 2) Rw Our collection of pre-made and made-to-order acoustic glass products use the highest quality materials to deliver exceptional performance when incorporated into sealed units. IAC Noise-Lock® acoustic windows are laboratory tested and manufactured with precision from strong, durable metal (aluminum or stainless/galvanized steel) with reliable acoustic seals. It enables subscribers to the Oracle to quickly calculate the acoustic performance of a range of window frames and glazing options and in most cases, with no need for acoustic testing in a laboratory. 8 Pilkington Optiphon™ 10,8 38 -1 -3 10. 4. SoundPro calculates glass usage by performance or glazing configuration. Single‑Pane Glass Keep the outside out of living and work spaces with our soundproofing options. The inner pane has the greater influence in the . Jan 21, 2025 · When comparing acoustic glass vs double glazing, the key difference lies in their soundproofing capabilities: Acoustic glass can reduce noise by up to 40-45 decibels (dB), making it the superior choice for environments with significant noise pollution. The estimation of acoustic performance is based on component-similarity assumptions which This document presents an overview of glass acoustical performance and considerations when specifying glass to achieve specific acoustical objectives. With rising energy costs and increasing traffic noise, secondary glazing has emerged as a popular glazing solution that not only reduces heat loss but also blocks external noise. Why Acoustic Glass? Acoustic glass offers an advanced solution for anyone looking to reduce noise and enhance privacy in their living or working spaces. Aug 1, 2024 · The Outside‑Inside Transmission Class (OITC) ranks the acoustic performance of exterior glazing; it can have the largest impact on building performance. Cost and Maintenance. Acoustic glass consists of two or more sheets of glass, bonded together with one or more acoustic interlayers: Each pane of glass in a noise reduction window or door is laminated with a layer of polyvinyl butyral (PVB), forming a strong hydrocarbon bond with the glazing unit, this improves acoustic attenuation by reducing the elasticity of the glass and providing an The next evolution of LightBridge™ with superior acoustic performance and thermally efficient spacer technology, LightBridge next™ is the ultimate choice for home comfort. glazing units typically have a minimum gap of 8 mm between panes, but can be manufactured with as much as 200 mm for optimised acoustic performance, often filled with a heavier gas such as Argon, or the more expensive Krypton and Xenon, for optimised performance. In any building type, managing glazing acoustic performance enhances overall quality of life and functionality of the space. Since the medium for six field-test sound conditions were single-glazed facades, singleglazed facades were simulated to determine the acoustic performance a façade with a single glazing. The Rw value will increase as the acoustic performance of a window Search for suitable solutions based on glazing parameters and acoustic requirements. Glass size and glazing system will affect STC rating. 8mm to 52mm for the glazing alone. The glass delivers a Sound Reduction Factor (Rw) of up to 54 decibels (dB) in triple glazing and 52dB in double glazing. Compliance with these standards will ensure that glazing installations meet the prescribed noise reduction criteria. However, thicker glazing might impact the daylighting and acoustic properties of the window, illustrating the need for a multi-objective optimization approach [10]. 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. To enjoy a tranquil and comfortable home, the noise levels inside should be no more than 35 dB during the day and 30 dB at night. Laminated Sideglazing. SYSTEM GLAZING CONFIGURATION GLASS JOINT GLASS TYPE TEST RESULT ASSESSMENT Sektor 90 Double glazed I-line joint 1 x 12. Aug 6, 2024 · To improve acoustic performance, manufacturers can also tweak glass configurations. Dec 17, 2021 · How would you measure the acoustic performance of a window? This is a difficult question to answer. Types of Acoustic and Thermal Glazing. We highlight what makes acoustic glass a high-performance solution distinct from other forms of glazing. With our Acoustic range, buildings preserve peace and quiet inside, no matter what’s happening outside. 2) - 20 argon - Pilkington Optiphon™ 12,8 (66. The frame is between 68-88mm thick. Mar 20, 2024 · Understanding Acoustic Glazing : Specifying the best glass for noise reduction explores the role of glazing in acoustic design and how different types of glazing products compare in terms of sound reduction performance. 8 Lam 24 DG 4/4 28 DG 4/6. . Pilkington suppliers Laminated Sideglazing that provide increased levels of passenger comfort by improving acoustic performance (noise reduction). Physical testing of the glazing and framing system under different sound conditions is essential to determine its acoustic performance accurately. The glass mass law states that doubling the mass per unit area can improve sound transmission loss by 6 decibels. Branching into timber construction As sustainability and biophilic design receive more emphasis, mass timber projects and timber curtain wall systems will likely see increased popularity. However, in most homes, space is at a premium with most homeowners preferring to retain as much cill space as possible. Double glazing: efficiency and popularity. Pilkington Optiphon™ is a high quality acoustic laminated glass that offers excellent noise reduction without compromising on light transmittance or impact performance. These windows are versatile and durable, able to be installed in a variety of projects and environments. This guide explores the essentials of acoustic glazing systems, their technology, pricing, and installation to help design houses understand their value and application. Discover our products specifically designed to reduce noise levels transmitted through glazing. It therefore ensures optimum acoustic performance. 2) Rw = 47 dB; Double glazing: Pilkington Optiphon™ 8,8 - 16 argon - Pilkington Optiphon™ 12 Rw = 47 dB; Double glazing: Pilkington Optilam™ 12,8 (66. A change in just 2dB in the noise reduction through a piece of glass can half the amount of noticeable sound that can penetrate the glazing. Reduces UV radiation by 99% reducing fading up to 8. Data is based on testing ~36" x 84" glass to ASTM E413-87 in an acoustical wall. Poor acoustic performance; Vulnerability to thermal shock . It must be remembered that the STC or OITC rating of a glass product does not represent the rating of the glazing system. May 1, 2017 · performance for different glazing types can be seen. Watch the video about SoundLab AI Disclaimer ACOUSTIC PERFORMANCE DATA INSULATING ACOUSTICAL DATA PGI crafts an array of laminated glass products, meticulously engineered using a variety of glass materials designed to significantly diminish noise intrusion from various sources, including airplanes, trains, vehicles, and other disruptive noises. Feb 7, 2022 · Glass mass, asymmetrical insulating glass and multicavity glazing are all popular and effective choices to improve acoustic performance in fenestration design. The higher the Rw index, the better the level of acoustic insulation offered by that glass composition. Glazing is a critical element in modern architecture, significantly impacting the aesthetic, thermal, and acoustic performance of buildings. Dec 10, 2021 · Glazing is the biggest factor. Acoustic insulating glass features specialized construction designed solely for sound dampening. Controlling noise levels impacts health, productivity, and concentration, as excessive noise can cause stress and sleep disturbances. Whether you require custom glazing for noise reduction, energy efficiency, or specific aesthetic preferences, our made-to-order glass solutions Dec 12, 2024 · Varying glass thickness within the glazing unit disrupts sound waves of different frequencies, providing comprehensive acoustic insulation. Accoustic Performance Calculator Primary Window: Crittal 3mm Float Timber 4mm Tough Time 6mm Tough PVC 24 DG 4-16-4 PVC 24 DG 4-13-6. Sep 11, 2024 · 3. The acoustic attenuation of a 6-12-6 mm glass is generally superior to that of a monolithic 6mm-thick glass, but only by 2 or 3 dB, and still there may be low frequency bands where the DGU performs worse. The performance data below applies to an insulating unit constructed with two plies of glass and an air or argon filled space. Unlike standard glazing, which primarily focuses on temperature control, acoustic glazing draws strength from its enhanced design, making it ideal for locations experiencing Combined effect of glass thickness and air space on the acoustic performance of double glazing. Mar 5, 2018 · For specific or high level noise problems, an acoustics engineer can provide a solution. More safety. LightBridge next™ double glazed units control the flow of heat in and out of your home, allowing you to have larger spans of seamless glazing for optimal natural light With the Guardian Glass Acoustic Assistant, users have the option to estimate the acoustic performance of glazing, find glazing solutions to meet an acoustic performance, or directly view the list of acoustic performance related to various glazing types. The OITC (Outside-Inside Transmission Class) rating is used to classify acoustic performance of glazing in exterior applications. Double glazing can boost acoustic performance because the larger the gap is on one side, the easier it will be to absorb the sound. The VIG represents an Acoustic performance of Selectaglaze secondary glazing The product range has been tested against single glazed primary windows in accordance with Standard BS EN ISO 140-3:1995 ‘Laboratory measurement of airborne sound insulation of building elements’. Rw values are determined by measuring the reduction in dB achieved where a window is used to insulate against a sound source. How do you clean secondary glazing? In order to continue to work optimally, secondary glazing needs to be regularly cleaned, but don’t worry. Double glazing typically reduces noise by 30-35 dB, which is sufficient for less noisy areas. 1 complaint people have about their neighborhoods. Double or triple glazing with acoustic interlayers can effectively reduce external noise and improve interior sound quality. The estimation of acoustic performance is based on component-similarity assumptions which Acoustic Performance TM of Windows and Curtainwall Some sounds are welcome, other sounds are not - Captured Glazing 2 80 x 80 1/4 1/2 1/4 31 26 INvision Unitized Acoustic Glazing Sound-Control PVB films offer outstanding sound attenuation properties, achieving improvements in sound insulation of up to 3 dB. Speak to Exact today to find out more about our high performance glass and progress your architectural glazing project with us. The desired acoustic performance can be achieved through various product combinations, depending on the specific noise reduction required. Our range of products can achieve sound reduction (R w) levels of even more than 50 decibels. Acoustic Glazing Systems: A Comprehensive Guide for Architect Incorporating acoustic glazing systems into modern designs is becoming increasingly popular for homes and offices. Excellent for meeting rooms and office partitions. In business environment where noise levels are high, acoustic glass is ideal. acoustic performance, moisture control, fire and smoke protection, among others. We factory assemble for rapid, simple installation and ensure perfect integration with any construction system. Modern glazing is designed to prevent heat loss and reduce noise transmission and will therefore help to create a better interior living environment. This type of glazing consists of two layers of glass separated by a layer of air or argon gas. First global acoustic calculator based on artificial intelligence for calculating / estimating acoustic performance of monolithic, double and triple glazed units. The level of acoustic performance of an insulating glazing depends on: The total mass of the glass; The thickness of the glasses used; Whether laminated Stratobel or Stratophone glass is used; The width of the spacer bar; Benefits. The Acoustic Calculator on the Oracle is a cost effective way of getting acoustic performance values for your windows up to 38 dB. If your budget or time doesn’t cover this setup, the next best thing is a double-glazing configuration of acoustic glazing and standard glass. User's have the option to estimate the acoutic performance of glazing, find glazing solutions for an acoustic performance, or directly access/view the acoustic performance table. S. Offering superior insulation compared to double glazing, triple-glazed units help to reduce heat loss, lower energy bills, and improve acoustic performance. The Guardian Acoustic Assistant is a tool to estimate acoustic performance of different types of glazing. The estimation of acoustic performance is based on component-similarity assumptions which Pilkington Optiphon™ is a high quality acoustic laminated glass that offers excellent noise reduction without compromising on light transmittance or impact performance. Users have the option to estimate the acoustic performance of glazing, find glazing solutions for an acoustic performance, or directly access/view the acoustic performance table. Doubling the mass per unit area can increase sound transmission loss by six decibels. e. are little different from ordinary glazing, of similar make-up. By agreeing to a Initial Visit there is no obligation to commit to our service; this is an opportunity to understand your needs more clearly. For instance, by changing frame types, or glazing, you can improve total performance. See additional notes below data for specific The Guardian acoustic assistant is a tool to estimate acoustic performance of different types of glazing. Description. An acoustic specialist will talk you through your best options and – using a NTi XL2 Acoustic Analyser – give you an immediate idea of the different noise levels, and advise you on your best options. At Performance Glass, we offer specialist glass solutions tailored to your needs, including high-quality triple-glazed windows and acoustic glass designed for optimal thermal and acoustic performance. Acoustic performance classes These classes AR1 to AR6 include sound reduction indices from 25 dB to 38 dB to deal with road noise. Sep 15, 2022 · The panes on your double glazing don’t make any contact, dampening the sound waves. A MEASURING THE ACOUSTIC PERFORMANCE OF A WINDOW Sound or acoustic performance of a window is measured by the weighted sound reduction index or Rw value. All data presented is for glass-only testing. 5 times over normal glass. Customizable: Glass thickness and spacing can be adjusted to achieve desired acoustic performance. Acoustic performance data herein is only applicable for glazing dimensions 1,23 m x 1,48 m (as per testing standard). The acoustic engineer assesses the level and types of noise affecting the building and specifies the appropriate acoustic performance requirements. Mar 13, 2024 · Good for skylights and roof glazing. Nov 3, 2023 · Upgrading your windows will have a positive effect on your home’s thermal and acoustic performance, whichever type of glazing you choose. Acoustic glazing is designed to combat noise pollution by using multiple layers of glass separated by air or gas-filled spaces to significantly reduce sound transmission. The performance of triple glazing depends on the types of glass used, each offering unique benefits in energy efficiency, safety, or sound insulation. Extended range of acoustic solutions: sound insulation (Rw) up to approximately 51 dB Thermal and Acoustic Performance: Provides both thermal insulation and sound reduction. Acoustic Performance Well-fitted secondary glazing provides outstanding noise reduction — outperforming double glazing. Performance targets are selected based on acoustic ratings, and results are revealed immediately. They can also be combined with other Pilkington products for a multi-functional noise-reduction monolithic glass May 14, 2021 · Double Glazing Data. By considering these acoustic factors when specifying glazing and framing, architects, engineers, and designers can create indoor spaces that offer enhanced sound insulation, contributing to improved Acoustic assistant. Acoustic glass is purpose-designed to slow the travel of sound waves through windows or doors and to absorb vibration. It is expected that a standard double-glazing system (6/12/6) will offer a sound reduction of around 32 dB. of the glazing system. Where this gap cannot be achieved or for more challenging noise sources, acoustic laminated glass offers significant Dec 20, 2023 · High Performance windows: Our top-of-the-range installations provide extra acoustic insulation for property owners suffering from extreme levels of noise pollution. Double glazing can reduce the noise in your home by around 31 decibels. May 6, 2020 · As the physical picture of sound transmission becomes clear, it is important that we divide the entire audio frequency range into the three regimes when evaluating the acoustic performance of glazing materials. In this study, single-skin facades are composed of an insulated glazing unit, IGU. For example, glass mass, asymmetrical insulating glass (IG) and multi-cavity glazing are popular and effective choices to bolster acoustic performance in fenestration design. The estimation of acoustic performance is based on component-similarity assumptions which Utilizing acoustic innovations and noise-reduction technology, Acoustical Surfaces has created a soundproof interior window series that provides market-leading performance. Secondary windows : It may be appropriate to use secondary glazing to give you the best results from your soundproof windows. Combining optimum thermal and acoustic performance, specifying high performance glass for your architectural glazing will create the ultimate in comfort living. High-Performance Triple Glazing. In addition to acoustic performance, Guardian LamiGlass® Acoustic offers all the benefits of standard laminated glass, including safety, security and UV protection. 8mm acoustic laminate glass + 1 x 12mm toughened glass - 48dB Sektor 90 Double glazed I-line joint 1 x 12. The estimation of acoustic performance is based on component-similarity assumptions which Disclaimer: The acoustic performance data provided in the reports is based on a test protocol or an estimation and may be used if user actual glazing is identical to input data described herein. When using laminated glass, you can increase the glass thickness or use different glass thicknesses for individual glass lites. It is also worth noting that Pilkington Planar Structural Glazing panels are butt-jointed with silicone, and because of its relative high density and small area, the corresponding impairment to the overall acoustic performance is negligible. Get Started Dec 11, 2012 · Rw index: The Rw index or sound reduction index (expressed in decibels) measures, in just one number, the acoustic performance of a specific glass unit. Double glazing has become increasingly popular thanks to its significant improvements in energy savings and acoustic comfort. 8 Acoustic comfort in buildings is crucial for undisturbed work, relaxation, and living. With the wide range of glazing solutions available, understanding the differences between single-glazing, multi-layered glazing, laminated glass and high-performance acoustic glazing is essential. , use the Configure your glazing feature of Calumen ®. BIM Objects Enhance your digital specifications with our customised BIM files designed for specific glazing applications. Laminated glass reduces the high-frequency noise considerably more than single pane double-glazed units. The glazing features multiple double or triple panes, for example, to ensure thickness. 3. With the growing emphasis on energy efficiency, triple glazing is becoming the standard for premium glazing solutions. Sep 13, 2023 · Many homeowners are choosing the installation of bespoke aluminium secondary glazing to improve the acoustic and thermal performance of their home. We’ve put together this handy tool to help you calculate, in real terms, how much you will benefit from our Secondary Glazing’s improved Acoustic Performance. Let’s connect! Sign up to our newsletter for the latest industry news, products and inspiration. For example, the acoustic performance of a door assembly is determined by subjecting a representative door assembly to a laboratory BS EN ISO 10140 series of acoustic test standards (the BSI standard that dictates the laboratory measurement of sound insulation in building elements) and in accordance with ISO 717-1. Source: Detailing for Acoustics, Lord and Templeton. 8 Pilkington Optiphon™ 8,8 37 0 -2 8. Evaluate the cost and maintenance requirements of different glazing options Secondary glazing is a cost-effective way of obtaining some of the benefits of double-glazing, such as energy efficiency and improved EPC rating, better security, and better acoustic performance. Compare that to normal speech, which is 50-60 dB. Understanding Acoustic Glazing : Specifying the best glass for noise reduction explores the role of glazing in acoustic design and how different 1 day ago · 3. Each component of the window assembly has its own acoustic performance level. 8 Pilkington Optiphon™ 16,8 41 -1 -3 16. Choose glass-Cavity-Download performance datasheet in PDF file. Acoustic interlayers overcome the drop in the acoustic insulating performance of glass at the critical frequency, in both single and double glazing. Noise reducing performance of acoustic windows can be achieved by a variety of combinations of glass thicknesses, interlayers with laminated glass, distances between panes and the gases used within the glazing cavity. A common misunderstanding is that double glazing is effective at attenuating noise. When using monolithic glass, increasing the glass thickness can help. Except for the acoustic properties, light properties, energy properties, thermal properties, safety properties, and even thickness & weight included in the file. Some of the considerations when specifying acoustical glazing include occupancy conditions, the type of anticipated noise, applicability of the acoustic performance rating system, and Viracon Acoustical Glass is made from combinations of various glass types along with acoustical window frames to help you effectively reduce sound transmission from airplanes, trains, vehicles and other unwanted noises. The STC (Sound Transmission Class) rating is a single-number rating system for interior building partitions and viewing windows used to categorize acoustic performance. Using one of JELD-WEN's sound-reducing glass options allows homeowners much quieter living spaces. Acoustic windows are shatterproof and much safer than ordinary glass. Hilton Hotel, London May 17, 2023 · With the wide range of glazing solutions available, understanding the differences between single-glazing, multi-layered glazing, laminated glass and high-performance acoustic glazing is essential. 8mm acoustic laminate glass + 1 x 10. The increased mass of conventional glass widths in triple-glazed assemblies enhances acoustic performance—a common reason for their use—but their added weight and depth demand heavier framing and more complex structural designs. The glazing that we recommend will depend on the origin and severity of your noise complaint. *OITC is estimated based on this test. In roofing, these glazed units will improve insulation and provide noise reduction from rainfall. 8mm acoustic laminate glass - 50dB With the Guardian Glass Acoustic Assistant, users have the option to estimate the acoustic performance of glazing, find glazing solutions to meet an acoustic performance, or directly view the list of acoustic performance related to various glazing types. 5mm VLam™ Hush achieves the same acoustics compared to 10. lhap exqqsz emvto ouuves tnxlz fptdcy rhvffsgr obedu ictjo jzodcv rfznn hprdg nqehe cuj dpof