Shiplap Roofing Boards

There are long wooden boards involved but genuine shiplap actually has overlapping grooves that fit together to make the design weather tight.

Shiplap roofing boards.

Shiplap is now considered an enemy of asphalt shingles. If you nail plain wooden boards to a wall and call it shiplap that s not quite accurate. Shiplap is everywhere these days. My house is from 1950.

Simply put traditional shiplap is a kind of wooden board that is often used for building barns and sheds. Shiplap has a groove cut into the top and bottom which allows the boards to fit together and gives it a unique appearance. Set your store to see local availability add to cart. Moving and shifting shiplap is one of the major reasons why there is a problem laying shingles directly over this inferior roof decking.

The boards are not butted tightly. In fact most shingle manufacturers will not warranty a roof that is sitting directly on shiplap. X random lengths driftwood grey vintage shiplap. Sheathing is 1x8 shiplap boards actual dimensions x7 with x rabbets.

Roof is 1 layer of 3 tab asphalt shingles that are in need of replacement it will be a full year off. There is probably about a gap on average. While shiplap may look like plain run of the mill wood panels that s not the whole story. Over time shiplap fir wood resin dissipates causing the boards to shrink crack form knot holes and become extremely brittle.