Roof Plank Sheathing

After the 1960s the predominant residential roofing substrate became 1 2 cdx plywood.

Roof plank sheathing.

Plank decking in older homes plank decking may have been used for the roof decking substrate. Today a shiplap roof is usually 60 years old. The issue guertin explains is the gaps between boards. Your roofer will attach your shingles to these squares or planks of wood.

Open spaces form between the once tightly fitted shiplap boards. Spaced or skip decking many older homes in older. Roof sheathing is usually made of either oriented strand board osb or plywood. They can be of several configurations.

As the boards to do the roof deck were manufactured here in the northwest it was still more economical than plywood through the 60s. In the first half of the 20th century roofs in missouri were built with wood shingles over planks spaced about 1 apart. Figure 1 consultants are likely to encounter wood planks on older structures. Over time shiplap fir wood resin dissipates causing the boards to shrink crack form knot holes and become extremely brittle.

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. Can a roofer determine the state of my decking before starting the roof replacement. Roof sheathing also known as roof decking is a strong layer of wood boards that are fixed to your roof s joists and trusses. Click to enlarge wood plank decks being found in low sloped pitched and even curved surfaces can take many forms.

Solid sheathing most new homes built after the mid to late 80 s typically have solid roof sheathing. If your home was built prior to 1970 there is a good chance it will have board sheathing. What s roof sheathing made of. Exterior grade plywood was not available until the 1940 s.

On older homes planks were often spaced for wood or slate roofs with wider exposures than the standard 5 inch tab on asphalt shingles. Here a barrel type roof is undergoing restoration and the original board sheathing is being preserved. The plank problem typically sheathing problems are isolated to small areas but old plank sheathing presents more of a challenge. 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.