Fiberglass Windows

All About Fiberglass Windows

Fiberglass windows are known for being durable and waterproof. They come with many of the benefits of wood or aluminum frames, but are budget friendly for homeowners looking to cut costs on window replacements.

How are They Made?

Fiberglass windows are made by pouring a fiberglass mixture into complex molds. The frames can be made continuously and don’t require fasteners to hold them together. Fiberglass frames are precision crafted and designed with the same dimensions each and every time.


Benefits of Fiberglass Frames

Fiberglass is one of the most durable materials used to construct windows today. Frames don’t have to be thick to provide strength and stability. Fiberglass resists weathering effectively and the material lasts for up to 80 years according to the Pultrusion Industry Council.

Fiberglass can be painted at a factory location or in person by the homeowner or a contractor. This makes it simple to get fiberglass windows in any color.

Both fiberglass and glass expand and contract at a similar rate, making fiberglass an ideal material for window construction. Vinyl windows expand and contract about seven times as much as glass, and wood about three times. These are big differences that can lead to frame failures over time. Because fiberglass expands and contracts with glass, it helps protect the window from temperature changes over time.

Fiberglass Window Frames are Efficient

Fiberglass window frames are highly energy efficient because fiberglass is an excellent insulator. Many homeowners rely on fiberglass insulation to insulate their home. This same insulator quality is present in fiberglass windows. Fiberglass windows can be foam filled for even higher levels of insulation, and they are known for expanding and contracting at around the same rate as the glass they house, helping to prevent openings for airflow stopping most drafts from ever occurring.

Fiberglass is a Sustainable Window Product

Fiberglass is a sustainable window material, arguably more sustainable than the other products on the market. While more trees can be grown for wood frames, it’s more difficult to grow trees to keep up with demand than it is to convert sand to fiberglass. Fiberglass windows also take less energy to create than aluminum, wood or vinyl window frames. Fiberglass is also now being recycled, making the waste from the windows less of an issue overall since they can be used in cements and other applications.

Limits of Fiberglass Frames

Some consider fiberglass frames to lack the traditional charm of wood windows. To compensate, homeowners can install an interior wooden trim on the fiberglass frame.

Most fiberglass window frames are hollow inside, which reduces their energy efficiency. Homeowners should find frames enhanced with foam insulation. Adding foam insulation effectively increases the frame’s energy efficiency without being prohibitively expensive.

If you’re looking for a durable product that’s going to outlast vinyl, and possibly aluminum and wood windows, Fiberglass frames are a good option to consider. The windows are strong, designed to hold their seals effectively, and they’re pretty affordable as well.

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