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Consumer Reports, October
1993,
“Vinyl sash tracks became distorted during durability tests. Parts of the frame
and sash bowed during durability tests. We experienced glass seal failure during
durability tests.”
Popular Science, June 1995,
“Although vinyl is more energy efficient than aluminum, vinyl, can warp and
fade.”
Reader’s digest New Do It
Yourself Manual,
“All vinyl becomes brittle in extreme cold. It expands and
softens in heat.”
Washington Post, April 21,
1996,
“Vinyl frames are not strong. Vinyl frames get soft and warp. They are
dimensionally unstable causing warping, cracks, air leaks which cause thermal
failure and glass fogging.”
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