If your home was built prior to 1970 there is a good chance it will have board sheathing.
Plank sheathing roof.
Roof sheathing is a layer of plywood wafer board or wood planks which is nailed on the rafters and stands between them and the shingles t the number of nails needed for a roof varies on multiple factors such as board face width length and roof truss spacing.
What s roof sheathing made of.
They can be of several configurations.
Sheathing should be a minimum of 19 32 inch thick.
Roof sheathing also known as roof decking is a strong layer of wood boards that are fixed to your roof s joists and trusses.
Your roofer will attach your shingles to these squares or planks of wood.
Exterior grade plywood was not available until the 1940 s.
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.
Plank sheathing usually 1 6 or 1 8 was used as a roof deck before plywood.
The plank problem typically sheathing problems are isolated to small areas but old plank sheathing presents more of a challenge.
Step sheathing are boards that run perpendicular and have a space separating them so that air can circulate under the shingles.
Roof sheathing is usually made of either oriented strand board osb or plywood.
In the first half of the 20th century roofs in missouri were built with wood shingles over planks spaced about 1 apart.
The issue guertin explains is the gaps between boards.
Plank sheathing are spaced about 18 apart and usually used with wood shingles that re installed in layers.
Roof sheathing comes in grid marked 4 by 8 foot sheets and should be installed perpendicular to the frame.
On older homes planks were often spaced for wood or slate roofs with wider exposures than the standard 5 inch tab on asphalt shingles.
As the boards to do the roof deck were manufactured here in the northwest it was still more economical than plywood through the 60s.
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.
This roof decking material is found in homes built before 1970.
The typical thickness range for sheathing is 3 8 to 3 4 inch.
Can a roofer determine the state of my decking before starting the roof replacement.
Wood plank decks being found in low sloped pitched and even curved surfaces can take many forms.
Sheathing a ro of is a crucial process in installing a new roof or replacing your old.
