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 ...

Copies of the National Association of Home Builders’ report on fire-retardant-treated plywood are available on request at telephone number (800) 368-5242. The report, “Investigation of Problems and ...

Dear Jerry: I have inspected hundreds of roofs, but this one has me puzzled. The house is a two story, about 20 years old. On the east side of the house only, the plywood for the first three trusses ...

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 ...

Q. I'm trying to educate myself about new construction, as I'm thinking of building a new home. I see carpenters nail on large sheets of wood onto the wall studs. What's the purpose of this funny ...

As a builder and flooring installer, I’ve learned the benefits of oriented strand board (OSB) and have often used it as a cost-effective alternative to plywood for sheathing and subfloors. The ...