Old Roof Sheathing

Today a shiplap roof is usually 60 years old.

Old roof sheathing.

The new plywood thickness should be. Shingles stain condensation collects and high winds carry roofs wherever they please. Roof sheathing comes in grid marked 4 by 8 foot sheets and should be installed perpendicular to the frame. The anchor of the system that keeps water out the base onto which you nail your roofing the major part of the brace system for your trusses rafters a key piece of the stiffening system that protects your house from earthquakes and blasts of wind.

These 8 to 12 inch wide boards were nailed together tight. 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. But you must take care to install shingles correctly so they lie flat.

After the 1960s the predominant residential roofing substrate became 1 2 cdx plywood. 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. Comes in standard 4 by 8 foot sheets is strong. Open spaces form between the once tightly fitted shiplap boards.

If conditions are right new shingles laid over old shingles can be just as attractive and durable as shingles laid on bare sheathing. Sheathing should be a minimum of 19 32 inch thick. Putting a safe roof over your head isn t necessarily a one time deal. Because the plywood roof sheathing under the shingles has become brittle and weak he plans to install new plywood as well as new shingles.

8d ring shank nails should be used instead. Installation is easier than for a tear off job because you can use the existing shingles as guides for laying the new ones. Never attach roof sheathing with staples. 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. 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. Over time shiplap fir wood resin dissipates causing the boards to shrink crack form knot holes and become extremely brittle.