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roofing... new layer on top of old.
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CJT
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Posts: 1,155
roofing... new layer on top of old.
wrote:
I have a three-tab asphalt shingle roof that I would like to re-roof
myself.
I've heard it is ok to just put asphalt shingles on top of the old (so
you don't have to scrape up all the old shingles) as long as it doesn't
go over three layers deep. Is this true? If so, should I be putting
down tar paper on top of the old shingles before laying the new layer?
Also, is there any disadvantage of going with fancier asphalt shingles
than three tab? I've seen some neat stuff from home depot
(manufacturer GAF) that look really neat, but are definitely not three
tab design.
Some localities have regulations affecting this.
I'd take off the old roof.
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