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Frequently asked questions

  • Technical/Specifications

    • Are there any restrictions on the size of glass panels?

      3.22 meters is the maximum width available for Saflex® PVB interlayers.

    • Can Saflex PVB interlayers be used in curved glass?

      Yes, it is possible in simple curved glazing. Please contact the laminators who can provide price quotations for a specific project. Click here to go to our Glass Manufacturer Locator.

    • What about UV protection and transmission?

      All architecturally targeted Saflex PVB interlayers will screen out 99% UV radiation up to 380 nm (including UV-A, B, and C).  

    • ​Are there any warranties?

      Only a glass manufacturer can offer a warranty on the final glass construction.

    • Can the edges of the glass be exposed?

      Testing conducted in both natural (Florida) and accelerated xenon weathering exposures have confirmed that—by all measurement systems—when properly laminated and installed, glass laminates produced with Saflex PVB interlayer will provide acceptable quality when the edges of the laminate are exposed to normal weathering.

    • ​Which sealants are compatible with Saflex interlayers?

      Eastman cannot and does not recommend specific sealants. Eastman has extensive experience with sealants using Saflex® PVB interlayers. The thoroughness of the application of sealants is just as important as the chemical interactions between the sealants and the PVB. The least reactive sealant poorly installed will perform worse than the most reactive sealant properly installed. Other effects, such as physical performance, weathering, paintability, and application ease, enter into the decision of which sealant to use. Often the framing will hide any cosmetic effects that may appear at the edge of the glass. To view documented results of compatibility testing of commonly used sealants and Saflex interlayer products click here. Most sealant suppliers will give information on which of their sealants is compatible with PVB interlayer.

    • ​Is there a risk of thermal breakage?

      Eastman advises the use of strengthened laminated glass to avoid thermal breakage. Thermal breakage may occur everywhere, from hot countries (e.g., Spain) to cold regions (e.g., Scandinavia).
      Consequently, it is recommended to assess the risk of thermal breakage for EACH project where Saflex will be used for exterior applications (facades, roofs, sunscreens, balconies, etc.). If the simulation shows that there is a risk, heat-strengthened or fully tempered glass should be used in place of annealed glass. Of course, for indoor applications (partition walls, balustrades, etc.) the risk of thermal breakage is slight, as there is usually no direct sun radiation on the laminated glass.

  • Product

    • What is the Vanceva® color interlayer system?

      The Vanceva color system is a range of colored PVB (polyvinyl butyral) interlayers. The Vanceva color interlayer system can produce a broad spectrum of colors and atmospheres that are unachievable using stock selections of glass. With this system, interlayers can be combined to produce over 17,000 transparent, translucent, or opaque color options to help you create the perfect tone and intensity.

      Laminated glazing is formed by permanently bonding these protective interlayers between two or more sheets of glass, creating a product that can meet or exceed some of the most stringent safety and security standards worldwide.

    • What is laminated safety glass?

      Laminated glass consists of a tough protective interlayer made of polyvinyl butyral (PVB) bonded together between two sheets of glass under heat and pressure. Once sealed together, the glass "sandwich" behaves as a single unit and looks like normal glass. Annealed, semi-toughened, strengthened, or tempered glass can be used to produce laminated glass.

      Laminated  glass provides durability, high-performance, and multifunctional benefits while preserving the aesthetic appearance of the glass. When impacted, laminated architectural glass will typically remain intact and may help prevent further damage caused by shattered glass.
      Laminated glass can be used virtually anywhere standard glass is used with very few exceptions. Some of the most common applications are:
      • Interior applications: partitions, doors, windows, skylights, furniture, balustrades, retail shelving, and flooring
      • Exterior applications: doors, windows, curtain walls, wall coverings, and overhead glazing

    • Does Saflex manufacture the laminated safety glass?

      No, Eastman is a manufacturer of glazing interlayers; Saflex is a brand name for those interlayers.

    • What is the link between Eastman, Saflex and the Vanceva color system?

      Vanceva® is a brand within the Saflex® polyvinyl butyral interlayers business unit of Eastman Chemical Company. The products we manufacture are used by glass companies to fabricate laminated glass. These glass companies then sell the laminated glass to manufacturers of insulated glass windows and doors, furniture and interior glass-wall systems, curtain walls, and skylights so that they can fabricate the glass into the finished installed product. Click here to go to our Glass Manufacturers Locator.

  • Samples

    • How do I order samples?

      • For Saflex samples:

      Please contact our preferred Glass manufacturer.

      If you have any additional questions, please contact us.


      • For Vanceva Colors samples:

      Please visit our Vanceva Color Selector Tool to explore available colors. SAMPLES CAN ONLY BE ORDERED VIA THE WEBSITE.
      If you know your four-digit Vanceva color combination reference, you can type this into the field "Enter a Vanceva Color Code” found in your shopping cart.
      The samples are 10 x 10 cm glass laminates with 2.3-mm glass.
      Custom sized samples can be produced by the laminated glazing manufacturer.
      If you have any additional questions, please contact us.

  • Commercial

    • Are there any reference buildings?

      Saflex PVB interlayers have been successfully used in a huge variety of projects since being trademarked in 1940. The product is used in different applications, such as  curtain walls, skylights, staircases, balconies, handrails, flooring, buss shelter and more. Click here to visit our gallery.

    • Where can glass made with Saflex® be purchased?

      Laminated glass made with Saflex PVB interlayers can be purchased from selected glass manufacturers or laminators.  Click here for our preferred glass manufacturers in your region.

    • How do I get information on price and lead times?

      Eastman manufactures laminated glazing interlayers and supplies these interlayers, branded as Saflex® polyvinyl butyral  and Vanceva® color interlayer system to our partner customers who laminate them within glass. Please click here for a list of qualified fabricators who can provide price quotations for a specific project.

      Among the factors that affect the price of laminated glass systems are the number of interlayer pieces within the glazing system and the type (thickness, strength, performance, etc.) of glass that will be used in the lamination.

    • Who do I contact if I want to have a visit from a sales representative? Does Eastman have a showroom?

      Eastman manufactures laminated glazing interlayers and supplies these interlayers, branded as Saflex® polyvinyl butyral and Vanceva® color interlayer system, to our partner customers who laminate them within glass. These laminating companies have a sales staff who can advise you on your project. Eastman does not maintain its own showroom. Click here to use our Glass Manufacturer Locator

  • Account Management

    • How to change your password

      To change your password:

      1. Log in to your account
      2. Select the account icon on the top right:
      3. Choose "My Account". This will take you to a page with a form containing details of your account.
      4. Enter your current password, followed by your new password.
      5. Save your changes