Posted: 5/23/2006 10:34:41 PM EDT
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my mothers house needs the roof redone, the shingles are shot. she doesnt have much money because she works at Northwest Airlines and they dont appreciate people who put in 20+ years like she has. i think the cheapest and quickest way to do anything about this would be for me to get a few friends together and just nail down another layer of shingles on top of the bad ones... then theres only a one day job and no dump fee for the old shingles at this point... is it BAD for the roof to have 2 layers of shingles? i realize its pretty ghetto or redneck to do it this way... but ive seen roofs with FIVE layers... so i couldnt think 2 layers could be all that bad, could it? |
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2 layers is fine. Codes will allow 2. Houses with 3 layers or more cannot be financed through FHA anymore I believe. The reason is weight. Shingles start getting VERY heavy and with 3' of snow the roof its load bearing is being tested to the max! Buy a roofing nailer, it will be worth it's weight in gold. |
+1 A 30 year shingle may only last 10 years depending on how bad the originals are and what kind of ventilation you have up there. That is exactly what happened to my roof. When I bought the place two years ago they told me the shingles up there were only 10 years old. Last weekend I striped them all off. There were two layers up there and almost no ventilation, so the top layer of shingles was shot at 10 years old and they were 30 year shingles. In the process of fixing the roof up myself I found out that the continuous vent sofets weren't really venting into anything. They had just installed them right over the original plywood sofets.  No fricking wonder the top layer only lasted 10 years. I am pissed because now I have to take down the gutters to get the sofets off and then take a reciprocating saw to cut holes in the plywood between all the trusses so that the sofets can actually draw air into the attic. Anyway, to make a long story short, you can get away with a second layer in the short term, but long term you'd be better off doing a tear off and doing it right. |