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Permaglass Windows

About Fiberglass Windows
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About Fiberglass Windows

Bick towerEnvironmentally-Friendly — Built to Last

Norwood Permaglass windows are manufactured from pultruded fiberglass, widely recognized as a leader in material strength, thermal performance and ease of maintenance. Sometimes referred to as the “lumber of the future”, fiberglass will not rot, peel or warp, is impermeable to moisture and will not degrade over time, making it perfect for coastal environments.

Why Fiberglass?

Fiberglass is used in many industry applications where strength and stability are required. Common applications include recreational boats, automotive and performance products. Fiberglass is also commonly used in bridge construction as a replacement for structural steel. Fiberglass can be subjected to the most extreme weather conditions and will stand the test of time in hot, cold or acidic environments. Pultruded fiberglass is moisture resistant, chemically inert and will not corrode in
coastal applications.

How Fiberglass Windows are Manufactured

Fiberglass windows are manufactured using a pultrusion process where glass fibers are coated with resin and pulled through a hot die the shape of the frame or sash profile. The heat cures the fiberglass resin to form a permanent shape that remains unaltered by any environmental condition. This strength means pultruded fiberglass window frames and sashes can be narrower, providing more window viewing area, which, in turn, means greater heat gain.

Superior Thermal Performance

Pultruded fiberglass, because of its low thermal conductivity and stability in extreme weather conditions, is a better insulator than vinyl or aluminum. Unlike vinyl, which can expand up to seven times more than the glass unit, pultruded fiberglass windows remain rigid and stable in all weather conditions.

Exceptional Strength and Stability

Pultruded fiberglass outperforms other window products for strength, thermal performance and low maintenance. All windows and frames are available with an integral nailing fin as part of the frame profile ensuring ease of installation and providing a water tight seal around the opening. Frames and sash components are assembled using galvanized or stainless steel fasteners and custom composite corner keys.

Expansion and contraction comparison

Fiberglass expands and contracts at a
similar rate to glass, so there is less
stress between the glass and frame in
extreme temperatures. This reduces
chance of air leakage and stress on
window hardware.

Fiberglass Windows Comparison Chart

In testing performed in accordance with ASTM testing standards, fiberglass composite has displayed superior performance in strength, ability to withstand extreme heat and cold, and resistance to dents and scratches.

comparison table

Fiberglass Fenestration: A Durable, Sustainable, and Economic Alternative for Windows and Doors

Learn more about the benefits of fiberglass from this online course from McGraw-Hill.

For more information, call 978.416.9495 or send us an email.