WHAT CAUSES FELT SHINGLES TO CURL ON A ROOF?

Felt shingles can curl on a roof when the trailing, or bottom edge, has not been fixed.

The effects of the sun can cause the bottom edge of felt shingles to lift if they are not secured, and once they start to lift the wind can often make the issue worse - in extreme conditions the shingles can be damaged or even ripped off the roof.

Premium quality felt shingles, such as our own brand shingles and the Dakota brand shingles that we also supply, have an adhesive bituminous strip on each shingle, that adheres the bottom edge of each course of shingles to the course below, thus preventing wind uplift.