Over time shiplap fir wood resin dissipates causing the boards to shrink crack form knot holes and become extremely brittle.
Shiplap roof sheathing.
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.
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.
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.
If you have roofers that don t know the difference between shiplap skip sheathing find a roofer that does.
After the 1960s the predominant residential roofing substrate became 1 2 cdx plywood.
The house is 45 years old and the roof looks very decent.
Shiplap doesn t have any gaps in the boards and can be roofed over as is usually.
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.
10723 exeter ave ne seattle wa 98125.
They may make a few extra bucks but they also want to leave a quality job behind.
The house is 1950s construction with 1x8 rabbeted shiplap boards as the roof sheathing.
The old shingles were the 3 tab interlock shingles.
Sheathing is 1 8 shiplap boards actual dimensions x7 with ⠜x⠜ rabbets.
Shiplap roof decking was widely used in the 50 through 80 s era when plywood hadn t yet made its way into new construction.
There is probably about a gap on average.
Apart from some very minor repairs at the eaves the shiplap is in great condition.
Shiplap is siding laid so that the lower edge of each board rides over the top of the previous board.
Open spaces form between the once tightly fitted shiplap boards.
The homeowner is going with the highlander 30 year malarkey shingles.
Roof is 1 layer of 3 tab asphalt shingles that are in need of replacement it will be a full year off.
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.
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.
Today a shiplap roof is usually 60 years old.
Sharp roofing is seattle s roof repair and replacement experts.
And don t think that the roofing company is going to make a mint off sheathing your roof.
Shiplap is now considered an enemy of asphalt shingles.
Nowadays people often find shiplap sheathing.
The boards are not butted tightly.
