Solid Sheathing On Roof

Osb is by far the most common and the most practical when considering all factors.

Solid sheathing on roof.

Roof sheathing comes in grid marked 4 by 8 foot sheets and should be installed perpendicular to the frame. Sheathing should be a minimum of 19 32 inch thick. Lumber wasn t kiln dried so it would shrink upon drying. Comes in standard 4 by 8 foot sheets is strong durable and relatively light.

Whenever your roof was first installed the nails were put into the solid wood. Metal tile and shingle roofing may also be applied to solid sheathing. This type of sheathing is necessary for composition roofing and built up roofing which have no structural capacity themselves. Typically 1 4 or 1 6 boards of wood are installed with a 3 5 maximum space between each board directly over the roof rafters or in a cold roof system over the plywood deck.

As wood dries it shrinks. The first course should overhang the fascia by 1 1 2 inches. Solid sheathing most new homes built after the mid to late 80 s typically have solid roof sheathing. Oriented strand board osb.

Roof sheathing materials plywood. As roofing contractors in seattle we are often asked why do we need plywood over our old solid sheathing. The keyword here is solid it used to be standard to use shiplap 1 boards tongue groove or other boards for the roof deck. It also holds roofing nails.

For economic and structural lateral load reasons. But the lumber was not usually kiln dried. Never attach roof sheathing with staples. For the starter course use either a single layer of shakes or two layers separated by a strip of felt interlayment.

This type of substrate creates an excellent surface for properly nailing shingles. These wider boards were all nailed tightly together. Sheathing is installed perpendicular to roof trusses. This sheathing is typically to 1 cdx plywood or osb oriented strand board and comes in 4 x8 sheets.

The most common types of sheathing used nowadays are osb oriented strand board and plywood. 8d ring shank nails should be used instead. Spaced sheathing also called skipped decking refers to the construction details of the substrate which the cedar gets nailed to and thus secured to your home. All courses should overhang the rake trim by about 1 inch.

At one point in time it was standard to use shiplap tongue and groove one inch boards or other boards for your roofing deck. Leave a gap between. Roof sheathing is any material that is used to provide a solid surface decking or base to which roofing material is applied to. These 8 to 12 inch wide boards were nailed together tight.

Solid sheathing provides a continuous surface at the plane of the roof.