Shiplap Roof Sheathing

I m hearing talk that if i tear off the existing shingles i am required to re sheath the roof with 7 16 osb while i m at it.

Shiplap roof sheathing.

This produces a surface with changes in elevation equal to the thickness of the boards it is unacceptable as a roof deck because it is uneven. Today a shiplap roof is usually 60 years old. So anytime your board decked roof is torn off and you want to install composition shingles be sure to lay down solid sheathing first. The old shingles were the 3 tab interlock shingles.

The house is 45 years old and the roof looks very decent. Apart from some very minor repairs at the eaves the shiplap is in great condition. When i said 1 incorrect nail is all it takes i meant if just 1 nail blows through the roof without the roofer noticing manufacturer can void warranty. Sheathing is 1 8 shiplap boards actual dimensions x7 with ⠜x⠜ rabbets.

The house is 1950s construction with 1x8 rabbeted shiplap boards as the roof sheathing. Over time shiplap fir wood resin dissipates causing the boards to shrink crack form knot holes and become extremely brittle. The rules for nails are fasteners must penetrate through the roof deck or be embedded 3 4. Shiplap is now considered an enemy of asphalt shingles.

Sharp roofing is seattle s roof repair and replacement experts. The homeowner is going with the highlander 30 year malarkey shingles. If you have roofers that don t know the difference between shiplap skip sheathing find a roofer that does. Shiplap roof decking was widely used in the 50 through 80 s era when plywood hadn t yet made its way into new construction.

Nowadays people often find shiplap sheathing. Sometimes on older houses they have had so many different roofs that the deck is all shot up splintering in this case a redeck is in order. And don t think that the roofing company is going to make a mint off sheathing your roof. They may make a few extra bucks but they also want to leave a quality job behind.

10723 exeter ave ne seattle wa 98125. Shiplap doesn t have any gaps in the boards and can be roofed over as is usually. There is probably about a gap on average. Shiplap is siding laid so that the lower edge of each board rides over the top of the previous board.

The contractor has indicated to the owner that its okay to put the asphalt shingles on the shiplap and that it won t void the warranty on the shingles. The boards are not butted tightly. Until the advent of plywood shiplap boards were commonly used to construct the sheathing between a home s structural framing and its exterior siding. Roof is 1 layer of 3 tab asphalt shingles that are in need of replacement it will be a full year off.

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