Sgt._Grumpy
Valued Contributor
Posts: 2775
Loc: Long Island, New York
Reg: 12-30-00
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05-29-05 04:24 PM - Post#706549
In response to Impalaman1966
Do it right and strip off the old roof first. Most companies will not honor their warantees if you go over an old roof. Plus overall looks are better if the new shingles are laid over a flat surface. If you have any flashing issues, ie. alongside a side wall or a chiminey, the weather will run alongside the flashing of the old roof under the new shingles. Going over the old roof will shorten the lifespan of the new roof.
I was 45 when I put a new roof on my house using 40 year shingles. I did it right and figgure if I live to be 85, I might have to pay someone else to re-roof it then! 
3 cars, no time to drive'em"
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