Hello,
We're getting ready to have our roof replaced and have a question about the proper way to replace a rotted piece of OSB that goes under a dormer.
If you look at the attached pics, you'll see an area in black. This is the area I temporarily "patched" until we can get the roof replaced. That piece of OSB is going under the dormer. The red X on one of the pics shows the area around either side of the rafter where the OSB rotted out.
Since that rotted area of OSB can only be cut flush with the rafter. should the roofer attach another 2x4 that runs along the existing rafter to support the new piece of OSB? See pic with the red line running along the rafter. I would think that would be a requirement. Otherwise there would be no support for the OSB.
20150510_093008_zpsz494ml8v.jpeg Photo by hikerguy1 | Photobucket
Also, I think there's a pretty good chance that the OSB that's sitting under the dormer is probably rotted out as well. Should we have any concerns about this? I know it would be impossible to replace without tearing up the dormer.
On a side note, is it customary for a roofer to charge for a whole sheet of OSB for each section they repair, even it that area is less than half a sheet? For example, if we end up having three sections that require less than 1/2 sheet for each area, would they typically bill for two sheets or three sheets?
Thanks,
Andy
Replacing rotted OSB that goes under a dormer....
We're getting ready to have our roof replaced and have a question about the proper way to replace a rotted piece of OSB that goes under a dormer.
If you look at the attached pics, you'll see an area in black. This is the area I temporarily "patched" until we can get the roof replaced. That piece of OSB is going under the dormer. The red X on one of the pics shows the area around either side of the rafter where the OSB rotted out.
Since that rotted area of OSB can only be cut flush with the rafter. should the roofer attach another 2x4 that runs along the existing rafter to support the new piece of OSB? See pic with the red line running along the rafter. I would think that would be a requirement. Otherwise there would be no support for the OSB.
20150510_093008_zpsz494ml8v.jpeg Photo by hikerguy1 | Photobucket
Also, I think there's a pretty good chance that the OSB that's sitting under the dormer is probably rotted out as well. Should we have any concerns about this? I know it would be impossible to replace without tearing up the dormer.
On a side note, is it customary for a roofer to charge for a whole sheet of OSB for each section they repair, even it that area is less than half a sheet? For example, if we end up having three sections that require less than 1/2 sheet for each area, would they typically bill for two sheets or three sheets?
Thanks,
Andy
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