Now Available in Oversized Configurations.
Interlayers are used to permanently bond two plies of glass in a laminated configuration. Laminated glass is a great choice for many applications to meet a variety of requirements.
Laminated Glass Applications
Acoustic – Laminated glass reduces noise transmission due to the sound damping characteristics of the interlayer
Aesthetic – Laminated glass interlayers offer a selection of color and opacity not achievable with other glass products such as coatings, glass substrates, silk-screen or spandrel glass. This is especially true with bright, vivid colors as well as opaque or translucent / frosted aesthetic requirements.
Blast-Mitigating – Viracon provides a variety of laminated glass options that help mitigate the effects of air-blast attacks. Important note: Laminated glass is considered a component of the overall glazing system, therefore; the blast mitigating performance is also dependent upon being installed into an adequately designed frame which is then anchored appropriately to the wall structure. Viracon recommends the involvement of a blast consultant to verify the performance of the glass and framing system combination.
Hurricane-Resistant – Hurricane resistant laminates offered by Viracon meet or exceed stringent building code requirements of Florida and other coastal regions. The laminated glass is a component of the overall glazing system and every Viracon hurricane resistant glass product has passed the impact and cyclic wind pressure test as part of a complete glazing system.
When choosing the right hurricane resistant glass for your application, the following points must be evaluated:
- Determine the applicable building code and test method
- Determine the required design pressure/wind load
- Qualify the missile requirement - large and/or small missile
- Identify the largest glass size
- If using a tested or certified framing system, confirm the laminated glass qualified with the particular manufacturer's product
- If not using a tested or certified frame, evaluate system design details, such as:
- Glazing method - conventional or structurally glazed
- Glass bite - Often large missile applications require a minimum edge engagement of 5/8" to augment performance.
- Anchorage and hardware requirements - typically large missile applications require an enhanced design.
Hurricane resistant laminates offered by Viracon are Dade County approved and carry a component NOA. For information on the current code requirements and test methods for a specific application and project location, please reference the applicable standard or the International Building Code (Impact Provision).
Safety - Viracon's architectural laminated glass products with a minimum .030" pvb interlayer comply with ANSI Z97.1-1984 and CPSC 16 CFR 1201, which are the industry safety standards for glazing materials.
Ultraviolet Protection – Laminated glass provides 99% UV light blockage at the wavelength range of ~300 - 380 nanometers
Viracon offers a vast selection of interlayer options to meet your specific requirements.
Polyvinyl butyral (pvb) - standard architectural interlayer available in three thicknesses:
Saflex® SilentGlass Acoustic – a three layer system designed to decouple and disseminate sound waves for superior sound damping performance. Interlayer available in .030" thickness.
SentryGlas® - an ionoplast interlayer bonded directly between two layers of glass for superior protection. The rigid interlayer minimizes deflection. Available interlayer thicknesses:
Level E - SentryGlas® - a specialized interlayer combination that is used for Level E hurricane applications.
StormGuard® - an enhanced polyvinyl butyral (pvb) interlayer which provides excellent adhesion to glass and optimum performance for large missile hurricane-resistant applications. StormGuard has less deflection and better tear resistance than standard pvb interlayers. It is also available in combination with Vanceva® Color interlayers. Interlayer available in .100" thickness.
Level E - StormGuard® - a specialized interlayers combination that is used for Level E hurricane applications.
Saflex® Storm - a pvb / pet film / pvb composite laminated between two panes of glass. The composition provides the impact resistance of pvb and the tear resistance of a polyethylene terephthalate (pet) film. Interlayer available in .077" thickness.
Vanceva® Color – interlayer system made up of base colors and a range of white interlayers that can be combined to achieve varying layers of translucency and color.
How it works –
- Each Vanceva base interlayer is designated by a number or letter.
- A single color can be selected or the base interlayers can be stacked to provide the specific color and opacity desired. Up to four interlayers* can be stacked between two plies of glass within a laminated glass unit.
Each Vanceva Color combination is given a four digit code. The specific layers and order of the layers determines the four digit code. This code can then be used in your laminated glass specification.
If the desired color is achieved with less than four base interlayers clear pvb is typically added to achieve .060” thickness and is represented with a zero.
*Note: Vanceva Color base interlayers are limited to three interlayers when used in combination with a coating. Due to coating and Vanceva Color base interlayer properties, a clear pvb interlayer must be placed between the coating and interlayer
SentryGlas® is a registered trademark of DuPont.
The solar performance of a glass unit results from the configuration of the unit along with the thickness of the glass used. Altering the thickness of an interlayer in a laminated glass unit, will have an insignificant effect on performance data.
Interlayers and Coatings
Each interlayer has different availability with each of Viracon’s coatings. For additional information regarding coating and interlayer compatibility, see the coatings component page.
The chart below is a general reference to represent the primary use for each type of interlayer. It does not indicate compliance for a specific application. Laminated glass is a component of the overall glazing system therefore the performance in a specific application is dependent upon being installed into an adequately designed frame which is then installed appropriately for the specific application.
StormGuard® is a registered trademark of Viracon.
Saflex® and Vanceva® are registered trademarks of Solutia, a subsidiary of Eastman Chemical Company