Accurate Dorwin Fiberglass Window System

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Accurate Dorwin fiberglass windows are perfect for new construction and retrofit projects. Designed for residential and light commercial applications, our windows are custom made to the size you require.

We use a fiberglass process that’s different from what’s commonly used in pools, boats, and storage tanks. Called pultruded fiberglass, this ideal window frame material features continuous strands of glass that is saturated in a thermoset resin, which is then pulled through a heated die. Pultruded fiberglass has proven to be a superior material through its dimensional stability, thermal insulation, durability and aesthetics, and environmental friendliness. Pultruded fiberglass frames, insulated with quality foam insulation and high-efficiency insulating glass, creates the ultimate window.

Durability & Aesthetics

Pultruded fiberglass is structurally stronger than both wood and PVC. Fiberglass profiles are carefully engineered so that the fiber strands create some of the strongest window framing material on the market. The incredible strength results in lower profile frames. This means more glass surface and a spectacular view.

Superior durability means fiberglass windows will not bend, bow, rot, or twist when exposed to extreme heat or cold. Impervious to moisture and salt, fiberglass windows will not pit or corrode, making it perfect for coastal applications.And unlike aluminum, fiberglass is resistant to corrosion, pitting and denting, making it ideal for coastal applications.

Temperature Extremes & Dimensional Stability

While traditional window frame materials perform well on the shop floor, how they perform when subjected to extreme humidity, heat, and cold is completely different. Wood is prone to warping and shrinking in extreme weather, while materials such as aluminum and vinyl are also susceptible to problems because of their high rates of thermal expansion.

A window frame should expand and contract at the same rate as glass, an ideal easily met by our fiberglass technology.

Thermal insulation

Pultruded fiberglass is a better insulator when compared to metal-clad wood, PVC, and aluminum. The high tensile strength of pultruded fiberglass allows it to be used in relatively thin-walled, hollow profiles that are completely foam filled. This results in superior thermal resistance: the new Energy rating (ER) numbers from the Canadian government place fiberglass window frames at the top of the list for overall performance.



Environmental Friendliness

Green building professionals, LEED designers and conservationists look to a number of factors to determine what makes a green friendly window. Fiberglass is becoming a leading material of choice for building green, and its proven environmentally-friendly aspects contribute to achieving LEED credits and status. What exactly makes Fiberglass windows green? To find out, visit the Why Fiberglass? section.