Until the 1940s exterior grade plywood was not available.
Plank sheathing roof.
Your roofer will attach your shingles to these squares or planks of wood.
This is the material that your roofing shingles are nailed to.
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.
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 a good solid roof deck in which to nail the shingles problems are sure to arise when the first big windstorm occurs.
Exterior grade plywood was not available until the 1940 s.
The issue guertin explains is the gaps between boards.
What s roof sheathing made of.
Can a roofer determine the state of my decking before starting the roof replacement.
The plank problem typically sheathing problems are isolated to small areas but old plank sheathing presents more of a challenge.
Roof decking or sheathing is the lumber that is attached to the roof trusses of your home.
Since the boards used for shiplap were manufactured here in the pacific northwest it was still cheaper than plywood up through the 1960s.
Roof sheathing also known as roof decking is a strong layer of wood boards that are fixed to your roof s joists and trusses.
In the first half of the 20th century roofs in missouri were built with wood shingles over planks spaced about 1 apart.
If you have spaced or plank sheathing osb or plywood will need to be added to completely cover the roof.
Figure 7 this newer roof had been installed with little thought given to proper deck repairs.
Roof sheathing is usually made of either oriented strand board osb or plywood.
What is roof sheathing.
On older homes planks were often spaced for wood or slate roofs with wider exposures than the standard 5 inch tab on asphalt shingles.
Just as with plywood or osb board sheathing provides some lateral stability for the framing and small plank fractions are not as sturdy as longer elements that span multiple supports.
Plank sheathing usually 1 6 or 1 8 was used as a roof deck before plywood.