Learn More About Types Of Hurricane Windows


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Types Of Hurricane Window Glass

There are five main types of hurricane window glass, all of which will have at least a DP45 rating. Top rated hurricane windows can have 100 + DP ratings - explore all five options here.

Polyvinyl Butyral

Polyvinyl butyral (PVB) is the same material found in a car windshield, although it's quite a bit thicker when used for hurricane window glass. Whereas a car windshield may be .030" thick, the hurricane PVB is roughly 0.90" thick. PVB is quite strong (small rocks can hit a car windshield on the freeway at 75 mph and may only leave a small chip), as well as effective at blocking sound, which is one reason it is often used for soundproof windows. This is the most common option for impact windows, mainly due to the fact that it is the most affordable impact glass on the market.

PVB & PET Film

The second option is a step up from the PVB alone and combines the PVB with a PET film. The film is placed between two panes of PVB glass and provides added strength to the glass component of the window. It also adds considerable expense to the per window cost.

Sentry Glass Plus

The third option is Sentry Glass Plus (SGP), which is a an interlayer that sits between two panes of glass and is much much stiffer and tear resistant than PVB. SGP is roughly 0.90" thick and is mainly used for commercial windows, although it can be ordered for residential purposes. It is usually very expensive.

Liquid Resin Laminates

The fourth option is a liquid resin laminate that is permanently applied to the glass through a curing process that uses UV light as a catalyst. The previous three options differ because they are all sheet materials that are laminated to the glass. Some companies include the PET film to this process to create even more strength. The liquid resin laminates tend to be popular in Florida.

Glass & Plastic Hybrids

The fifth option is the glass and plastic hybrids. Here they sandwich a polycarbonate sheet of Lexan in between two panes of glass and bond the materials together. The result is a very strong glass unit, although it is not recommended for high heat areas because the polycarbonate tends to expand more than the glass.

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