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 ...

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 ...

After having a new shingle roof installed, I found out the shingles had been installed over a wet plywood deck. The plywood dried out, but it now exhibits signs of rot. Should I be concerned that my ...

A fire-retardant plywood that has become a standard building material in town house developments in the last decade has now been found to decompose after only a few years, leaving homeowners and ...

A multibillion-dollar potential class-action claim against the major manufacturers and distributors of allegedly defective fire-retardant roofing plywood has been dismissed by a U.S. District Court ...