![]() but there were more than 3,000 different companies producing windows. In 1996 there were fewer than ten major window manufacturers in the U.S. Will they survive for a hundred? No one knows, but studies prove that many of these windows installed since the early 1980s are failing at an alarming rate. Vinyl windows have only been around about 20 years.The problem increases with the size of the window the bigger the sash, the sooner it fails. ![]() This can cause the seal between the vinyl framework and the glass to fail. It expands seven times farther than glass with each degree of temperature. And though all windows expand and contract with temperature changes, vinyl expands more than twice that of wood. What does this mean? For example, vinyl begins to soften and distort at 165 degrees Fahrenheit, which is a temperature that's easily reached in the space between a window and drapes on a sunny day (winter or summer).
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