1.   Venting the attic, and allowing the roof to breathe, often helps prevent asphalt roof shingles from curling.

2.   Asphalt roof shingles were also leftovers from another project, Schuller said.

3.   Asphalt roof shingles are sort of OK, but not good enough.

4.   Asphalt shingles can span a larger opening than one by four inches.

5.   A reader once wrote that she removed lichen with a bristle scrub brush, but that, too, could ruin asphalt shingles.

6.   A. I think it is best left as is, because it may be impossible to remove it from the asphalt shingles without wrecking the roof.

7.   After all, they can carry slate and asphalt shingles, sometimes two and three layers of the latter.

8.   CertainTeed planned to buy the maker of asphalt shingles and other roofing materials in a two-step transaction.

9.   Cold weather can make asphalt shingles stiff and brittle.

10.   Common signs of an overly hot attic are asphalt shingles with corners curled up, or bulges in the felt and shingles directly over the seams in the sheathing.