Sheets of plywood, OSB, gypsum and extruded polystyrene are a few common types of sheathing material. Rafters are the angled ...

OSB is used in construction mainly as roof, wall and floor sheathing. The Fort St. John mill will rely on an annual 1.1 million cubic metre wood supply of aspen and cottonwood.

Your roof is your home's primary protection against hail, wind, fire, and other hazards. That's why insurance companies consider the age, condition, material, and shape of your roof when determining ...