Underside of an overhang that is not finished.
Method of valley construction in which shingles on both sides of the valley are trimmed along a chalk line snapped on each side of the valley. Shingles do not extend across the valley. Valley flashing is exposed.
An asphalt roofing base material manufactured from cellulose fibers and asphalt bitumen.
An asphalt shingle reinforced with organic material manufactured from cellulose fibers and asphalt bitumen.
Oriented strand board (OSB) is cheaper than plywood, but not as strong as plywood, and does not hold nails as well as plywood. One side has a slip resistant coating and should be placed facing up.
Oriented strand board. Directionally formed particleboard comprising cross-bonded plies. Substitute for plywood in building.
That portion of the roof structure that extends beyond the exterior walls of a building.