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What Are Your Interlayer Options For Laminated Glass

Protecting your home from the devastating effects of a hurricane can be easily accomplished with hurricane impact windows. There are a wide variety of features you will need to consider when shopping for windows and one of them is choosing which type of glass interlayer you want for your home.

Most hurricane impact windows are made from laminated glass. Laminated glass is a type of safety glass that will hold together even if it breaks. Although it looks likes everyday glass, laminated glass provides superior protection from flying debris, blocks 99% of UV light, reduces noise transmission, and reduces the cost of your energy bill, while still allowing most visible light to penetrate through.

Laminated glass consists of 2 panes of clear glass that are bonded together with a protective interlayer to form a thick single sheet. The inner layer holds the glass together upon impact. The glass fragments stick to the inner film layer, preventing water, wind, or flying debris from entering the structure. The strength of the glass prevents it from breaking into large, sharp pieces that can potentially cause injury.

There are 4 different interlayer options to choose from when shopping for laminated glass products:

  1. PVB (Polyvinyl Butyral) – This is the most widely used interlayer in the manufacturing of impact glass because it’s strong and doesn’t tear easily. It is also flexible. When the glass is impacted, PVB stretches and absorbs the impact. It’s the same glass used to make car windshields.
  2. PVB Hybrid – This interlayer has a layer of PET (Polyethylene Terephthalate) film between the PVB layers. Although this glass performs very well, it’s becoming difficult to manufacture and as a result, less companies are using it in the production of their impact window products.
  3. SGP (Sentry Glass Plus) – SGP has an interlayer which is slightly more rigid. Instead of absorbing the impact of the debris, it transfers the force from the glass to the frame of the window. This doesn’t seem to be an issue with wood frames or tougher vinyl frames, but can cause problems in some of the weaker vinyl frames.
  4. Resin Laminates – Liquid resin is poured between 2 panes of glass and allowed to cure. It’s a cheap and easy glass for manufacturers to make, however does not seem to stand up as well as some of the other products available in either performance or durability.

Choosing the right type of laminated glass for your impact windows can be a challenging process. Factors you will want to consider are strength, window frame and budget to help you make a decision. However, bearing in mind all of the protective properties of laminated glass, you can feel good knowing your home is more protected, no matter which interlayer you choose.

To discuss glass interlayer options for hurricane impact windows, contact the knowledgeable professionals at The Window Guys of Florida at (561)598-6295. You can trust the Window Guys of Florida to help you choose window and door products that are just right for you.