So anytime your board decked roof is torn off and you want to install composition shingles be sure to lay down solid sheathing first.
Shiplap roof sheathing.
Nowadays people often find shiplap sheathing.
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The homeowner is going with the highlander 30 year malarkey shingles.
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.
Being ideal for asphalt shingles in the early days of its creation shiplap sits beneath the roof of many homes about thirty years old.
After the 1960s the predominant residential roofing substrate became 1 2 cdx plywood.
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.
Open spaces form between the once tightly fitted shiplap boards.
Roof is 1 layer of 3 tab asphalt shingles that are in need of replacement it will be a full year off.
Apart from some very minor repairs at the eaves the shiplap is in great condition.
They may make a few extra bucks but they also want to leave a quality job behind.
The boards are not butted tightly.
The rules for nails are fasteners must penetrate through the roof deck or be embedded 3 4.
Sharp roofing is seattle s roof repair and replacement experts.
Shiplap roof decking was widely used in the 50 through 80 s era when plywood hadn t yet made its way into new construction.
Shiplap doesn t have any gaps in the boards and can be roofed over as is usually.
The old shingles were the 3 tab interlock shingles.
Sheathing is 1 8 shiplap boards actual dimensions x7 with ⠜x⠜ rabbets.
There is probably about a gap on average.
Shiplap is now considered an enemy of asphalt shingles.
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.
The house is 45 years old and the roof looks very decent.
Over time shiplap fir wood resin dissipates causing the boards to shrink crack form knot holes and become extremely brittle.
Shiplap is siding laid so that the lower edge of each board rides over the top of the previous board.
The house is 1950s construction with 1x8 rabbeted shiplap boards as the roof sheathing.
If you have roofers that don t know the difference between shiplap skip sheathing find a roofer that does.
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.
10723 exeter ave ne seattle wa 98125.
And don t think that the roofing company is going to make a mint off sheathing your roof.
