Roof Trusses
The roof truss is an assembly of members that form a rigid framework.
19/*Information needed to purchase a truss includes the span, roof pitch, spacing of trusses, and roof load.
Lightweight wood trusses generally can span distances of 20′ to 32′.
Residential trusses are generally 2″ x 4″ or 2″ x 6″ lumber.
Detail of Roof Trust
Roof Design
The roof design and roofing materials have a significant impact on the finished appearance of the residence.
Roofing Materials
Asphalt shingles are the most popular type of roofing material for residences.
Usual weight is 235 pounds per square.
A “square” of shingles covers 100 square feet.
A layer of 15-pound saturated-felt building paper is usually placed between the sheathing and shingles.