Old Roof Sheathing

Today a shiplap roof is usually 60 years old.

Old roof sheathing.

But can he simply install new plywood over the old. As roofing contractors in seattle we are often asked why do we need plywood over our old solid sheathing. The keyword here is solid it used to be standard to use shiplap 1 boards tongue groove or other boards for the roof deck. Shingles stain condensation collects and high winds carry roofs wherever they please.

These 8 to 12 inch wide boards were nailed together tight. If you re in search of quotes for a roof sheathing job improvenet can put you in touch with up to four local contractors for free. 8d ring shank nails should be used instead. Roof sheathing materials plywood.

The toh pros offer up their best advice for shingling properly sniffing out leaks and knowing when it s time to reroof an old roof. Putting a safe roof over your head isn t necessarily a one time deal. If conditions are right new shingles laid over old shingles can be just as attractive and durable as shingles laid on bare sheathing. Over time shiplap fir wood resin dissipates causing the boards to shrink crack form knot holes and become extremely brittle.

But you must take care to install shingles correctly so they lie flat. Roof sheathing comes in grid marked 4 by 8 foot sheets and should be installed perpendicular to the frame. Open spaces form between the once tightly fitted shiplap boards. Sheathing should be a minimum of 19 32 inch thick.

Installation is easier than for a tear off job because you can use the existing shingles as guides for laying the new ones. The typical thickness range for sheathing is 3 8 to 3 4 inch. And if you re still wondering what roof sheathing is and what materials are typically used read on and satisfy your curiosity. Because the plywood roof sheathing under the shingles has become brittle and weak he plans to install new plywood as well as new shingles.

As long as the new plywood itself can span the distance and carry the roof wind seismic and snow loads for your region adding new ply over old is just fine. The new plywood thickness should be. Comes in standard 4 by 8 foot sheets is strong.