Plank Sheathing Roof

Step sheathing are boards that run perpendicular and have a space separating them so that air can circulate under the shingles.

Plank sheathing roof.

Roof sheathing is usually made of either oriented strand board osb or plywood. 8d ring shank nails should be used instead. Your roofer will attach your shingles to these squares or planks of wood. Plank sheathing are spaced about 18 apart and usually used with wood shingles that re installed in layers.

Exterior grade plywood was not available until the 1940 s. Sheathing should be a minimum of 19 32 inch thick. On older homes planks were often spaced for wood or slate roofs with wider exposures than the standard 5 inch tab on asphalt shingles. Plank sheathing usually 1 6 or 1 8 was used as a roof deck before plywood.

Never attach roof sheathing with staples. Roof sheathing comes in grid marked 4 by 8 foot sheets and should be installed perpendicular to the frame. As the boards to do the roof deck were manufactured here in the northwest it was still more economical than plywood through the 60s. The plank problem typically sheathing problems are isolated to small areas but old plank sheathing presents more of a challenge.

The typical thickness range for sheathing is 3 8 to 3 4 inch. This roof decking material is found in homes built before 1970. Even if we filter it down to board sheathing only there can be square edges shiplap edges spaced decking and the ordinary tongue and groove that profile was explored in part ii of this series. Roof sheathing also known as roof decking is a strong layer of wood boards that are fixed to your roof s joists and trusses.

Sheathing a ro of is a crucial process in installing a new roof or replacing your old. In the first half of the 20th century roofs in missouri were built with wood shingles over planks spaced about 1 apart. They can be of several configurations. The issue guertin explains is the gaps between boards.

What s roof sheathing made of. If you have spaced or plank sheathing osb or plywood will need to be added to completely cover the roof. Can a roofer determine the state of my decking before starting the roof replacement. Without these many of the nails used to install the shingles will fall between the sheathing and the first wind storm will blow your shingles off.