Q: Shortly after it was built, we noticed a slightly lifted-looking horizontal line (shingles not flat as the others) on the upper-left area of the roof when looking at the front of the house. The ...
Can new plywood be installed on a 40-year-old roof without removing the old? Roy Gingrich of Ellicott City has a 40-year-old house with an asphalt shingle roof surface. The existing asphalt shingles ...