Shiplap Roof Sheathing

The rules for nails are fasteners must penetrate through the roof deck or be embedded 3 4.

Shiplap roof sheathing.

And don t think that the roofing company is going to make a mint off sheathing your roof. The old shingles were the 3 tab interlock shingles. Shiplap is now considered an enemy of asphalt shingles. The house is 1950s construction with 1x8 rabbeted shiplap boards as the roof sheathing.

They may make a few extra bucks but they also want to leave a quality job behind. 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. Until the advent of plywood shiplap boards were commonly used to construct the sheathing between a home s structural framing and its exterior siding. If you have roofers that don t know the difference between shiplap skip sheathing find a roofer that does.

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. 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. Shiplap is siding laid so that the lower edge of each board rides over the top of the previous board. 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.

Shiplap doesn t have any gaps in the boards and can be roofed over as is usually. The house is 45 years old and the roof looks very decent. So anytime your board decked roof is torn off and you want to install composition shingles be sure to lay down solid sheathing first. Call us today for a free estimate or roof inspection 206 367 7663 or fill out our contact form here.

Sharp roofing is seattle s roof repair and replacement experts. Nowadays people often find shiplap sheathing. After the 1960s the predominant residential roofing substrate became 1 2 cdx plywood. Being ideal for asphalt shingles in the early days of its creation shiplap sits beneath the roof of many homes about thirty years old.

The boards are not butted tightly. Apart from some very minor repairs at the eaves the shiplap is in great condition. Shiplap roof decking was widely used in the 50 through 80 s era when plywood hadn t yet made its way into new construction. The homeowner is going with the highlander 30 year malarkey shingles.

Sheathing is 1 8 shiplap boards actual dimensions x7 with ⠜x⠜ rabbets. 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. Over time shiplap fir wood resin dissipates causing the boards to shrink crack form knot holes and become extremely brittle. There is probably about a gap on average.

Today a shiplap roof is usually 60 years old.