I need to replace a section of deteriorated shingles in one area of my roof. This shingles were defective and aged quickly, the rest of the roof looks good. The shingles were stapled down and came off easily. the felt underneath is good and was not damaged in the removal. Do I need to put a new layer of felt down or can I put my new shingles over the old felt? I guess the only issue would be the small holes from the staples that were used on the old shingles. Does the felt real serve much purpose once the shingles are down in terms of water protection?
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Make sure all the staples are out.
The paper is probably OK, but if you do replace it, be sure to tuck the edges of the new under the old at the top and sides and over at the bottom (if necessary).
And I'd advise you to nail the new roofing rather than staple it.
Does the felt real serve much purpose once the shingles are down in terms of water protection?
Neighbors having a roof done. Roofer isn't using felt. While it can be argued that once the shingles go on and puncture the felt with thousands of holes it serves little purpose, I'd argue that even that little amount of protection is worth it.
I've torn off a fair amount of roofs over the years after a good rain storm. Plenty of instances of wet felt protecting dry decking. Not to mention the possiblity of ice damning in certain climates.
J. D. Reynolds
Home Improvements
Depends. The short answer is no, new felt is not necassary. Theory being that if you have water getting behind your shingles at all ya got bigger problems than old paper. That said, Ice and water damming situations are where you do need protection and you should use Weathergard or similar there.