Solid Sheathing On Roof

When the roof was first nailed on of course all the nails were in solid wood.

Solid sheathing on roof.

This is required in areas of high wind or seismic activity and wherever else a solid roof diaphragm is required by code. These wider boards were all nailed tightly together. These 8 to 12 inch wide boards were nailed together tight. Sheathing should be a minimum of 19 32 inch thick.

Sheathing is installed perpendicular to roof trusses. The keyword here is solid it used to be standard to use shiplap 1 boards tongue groove or other boards for the roof deck. 8d ring shank nails should be used instead. R905 10 2 slope minimum slopes for metal roof panels shall comply with the following.

Whenever your roof was first installed the nails were put into the solid wood. Metal roof panel roof coverings shall be applied to solid or spaced sheathing except where the roof covering is specifically designed to be applied to spaced supports. As roofing contractors in seattle we are often asked why do we need plywood over our old solid sheathing. Never attach roof sheathing with staples.

Step sheathing can then be applied over the solid sheathing as needed. Shingles which must permit air to circulate under them are now often placed on a special membrane that permits circulation. Lumber wasn t kiln dried so it would shrink upon drying. As wood dries it shrinks.

Roof sheathing comes in grid marked 4 by 8 foot sheets and should be installed perpendicular to the frame. Solid sheathing required for wood roofs in high wind areas. But the lumber was not usually kiln dried.