Melted Vinyl Siding

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Posted by: from Calgary
7/23/2011 at 5:42:29 PM

The Low E windows in my home have begun to melt the vinyl siding on my home.

Most of the info I have found suggests covering the windows with a screen or awning. Other info I have gotten says that window tints increase the reflection of sun light.

Are there windows that I can replace mine with that will not reflect on to the siding causing it to melt?

Do you any other suggestions to help me solve this problem?

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Dave in Oshawa
Date/Time8/5/2011 at 11:40:30 AM


I'm not sure how you're coming to this conclusion, but a low-e coating cannot do this. Low-E stands for Low Emissivity. The coating is applied on the inside face of double (or triple) pane window, between the two panes. The coating allows radiant heat from the sun to enter the home, but keeps it inside. It has nothing to do with reflecting the sun on the outside of the home or reflecting heat back onto the vinyl siding. Even if the windows were somehow installed inside out, the heat reflection would be away from the building and not onto the siding and it would be minimal (not enough to melt siding). I suspect something else is going on and you might want to have a professional engineer investigate. Vinyl siding is designed to expand and contract in hot and cold weather and performs well in the Canadian climate. If it looks like the siding is bowing or warping on hot days, it is more likely that it was nailed too tight to the house and its expansion is being restricted.

~ Dave

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