Sheathing Roof Trusses

Osb is lightweight relatively inexpensive and strong enough to resist bending or breaking should someone walk on the roof.

Sheathing roof trusses.

Boards used for sheathing range from those with a 4 inch face to 48 inch long plywood sheets. A structure s roof truss spacing can vary from every 12 to 24 inches. Roofs are framed with rafters or trusses which are rafters joined by internal braces so they install as a single component. Roof sheathing or decking is one of those elements.

These trusses are positioned on the top plate of the endwall so the entire bottom chord is supported by the wall. Start the sheathing at the eaves and work your way up to 1 inch from the peak. Any weight imposed on the end truss is directly transferred to the endwall which transfers the weight to the. In the u s roof sheathing is almost always composed of wood usually osb oriented strand board or plywood.

The minimum plywood for roofing. The skeleton of a roof is formed with rafters or trusses generally spaced 16 inches or 24 inches apart from the center of one rafter to the center of the next. The trusses and beams of the roof give the roof its initial pitch and structure and then the sheathing is applied so the actual underlayment and roof covering can be applied. The roof s sheathing helps to keep the roof trusses or rafters properly spaced and is the strength that holds.

Rafters run from the peak of the roof. Most houses contain a weak link in the connection of the roof sheathing to the rafters or roof trusses making them vulnerable to loss of roof sheathing in severe winds but solutions to this. End trusses close in the end of a building and provide a nailing surface for the upper end wall or rigid sheathing. Install sheathing perpendicular to roof trusses one slope at a time.

Roof sheathing is a lot more than just flat panels onto which shingles are attached. There are a few different terms for roof sheathing such as roof decking but sheathing is one of the more popular terms.