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Learn about Fiberglass Door

Fiberglass Door

Fiberglass doors have a core of rigid insulation (like polysio or extruded polystyrene) surrounded by fiberglass and covered with an artificial wood grain that is often very difficult to distinguish from real wood. Fiberglass doors are considered an alternative to wood doors while offering superior strength, insulation value, and resistance to rust, rot, warping, corrosion, and insect infestation.

When shopping for a new exterior door, consider its energy-efficiency, aesthetics, and durability. Fiberglass doors are more durable and energy-efficient than other options, but wooden doors offer a unique and warm aesthetic that some homeowners can’t do without. If you live in a cold climate or energy-efficiency is top-of-mind, fiberglass doors can be found in a variety of different finishes and styles that rival wood for their appearance. Fiberglass doors can also be purchased in a variety of thicknesses, some even meeting Passive House standards.

Fiberglass doors offer superior energy-efficiency, reducing your home’s energy load and carbon footprint. Meanwhile, fiberglass doors are made from non-renewable and largely unrecyclable materials like polystyrene and fiberglass.

Fiberglass was discovered by accident in 1932. Games Slayter produced glass fibers when he pointed a jet of compressed air at a stream of molten glass. Owens Corning patented “Fiberglas” in 1936 as an insulator for very high temperatures.