Plywood is a staple material in the construction and woodworking trades. Here's how to recognize the grades and choose among them.

Plywood is a commonly used material in a wide range of construction projects, including furniture-making, deck-building, exterior home construction, interior home construction, and custom woodworking.

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 ...