The Accurate Dorwin Company, based in Winnipeg, has been a leader in innovation and window energy performance since 1952. Described by one customer as "the industry's best-kept secret," the company's products have begun to gain more recognition recently when they were selected for use in several model environmental projects. In Canada, their windows were used on the "Greenhome", a cutting edge project built in Waterloo, Ontario, to represent the best in energy efficiency and environmental responsibility in home construction.
In the U.S., the company's windows and patio doors were used in the construction of Eco Village in Ithaca, N.Y. during 1996-97.
Here in Vermont, Accurate Dorwin fibreglass windows were used commercially in 1996 in the Salisbury School and in 1997 at the Vermont Law School in South Royalton and in the renovation of the Vermont Energy Investment Corporation in Burlington. They were also selected for use in private residences during 1996 in Calais, Charlotte and Stowe, as well as Architect of the Month Bill Maclay's Vermont Healthy Home in Warren.
"It's a super window," says Maclay. "That is, it has very high energy performance and it's very, very durable. Those are the two things that I found really excellent about them.
"It's definitely one of the best energy performing windows available, and at a good price," Maclay continues. "I think you'll find more companies that go with the fibreglass pultrusions."
In fact, it is the use of fibreglass that has been a major factor in allowing Accurate Dorwin to meet and surpass the expectations of builders, architects and their clients in high performance windows. That's because fibreglass is the most compatible material to use with glass, as the expansion and contraction characteristics of the two materials are almost identical. The glazing and frame expand and contract as one unit, minimizing stress on the seal between the frame and glazing. This helps explain why their windows have exceptionally high ER ratings (reflecting a window's ability to admit solar heat, prevent heat losses, and resist air leakage losses). – less–ZoomInfo