Winter Roofing

Generally speaking, “roofing season” begins when the temperatures warm up in the spring and ends when temperatures cool in the fall.  Of course, in some parts of the country it stays warm enough for roof replacement all year, but even in cooler climates it is often possible to install a new roof in the winter. 

The reason that asphalt shingle roofs are generally installed in warmer weather is due to the design of the shingles.  Asphalt shingles are installed beginning at the lower edge of the roof and working up toward the peak. Each row of shingles is nailed to the roof deck along the upper edge of the shingles.  The lower edge of the shingles overlap the row of shingles below it. 

Asphalt shingles have an adhesive strip on the underside of the lower edge of the shingle.  Where the shingles overlap the row of shingles below it, this adhesive helps hold the lower edge of the shingles in place and contributes to the wind resistance of the shingles.  Warm temperatures are required for the shingles to adhere properly and the challenge of installing an asphalt shingle roof in the winter is that the temperatures on the roof will not be high enough for the adhesive to work properly.

A good roofer can work around this issue by using a few dabs of roofing cement to hold each shingle in place until the weather warms up in the spring.  When it does, the adhesive strip will soften and the shingles will bond together.  The roofing cement will continue to provide additional bonding. 

Posted on behalf of Roofworks