Posted: 4/27/2011 6:34:31 AM EDT
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...do I strip the old ones off or shingle over them?
Original roof, hail damage, 15 years old approx. |
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Depends on local code.
Regardless of local code, I wouldn't go more than 2 layers. If you are going to be the guy doing the next layer in 10 years, then you might as well strip them off now. You'll be 10 years older ten years from now and won't want to put up with that shit. |
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Taggin this one for info.....not trying to hijack your thread Bama. How much damage did you get? We had a few broken shingles and a lot of the little surface aggregates knocked off. Looked like a coulple of handfulls out of the gutters.
Similar situation. 20 year old roof w some hail damage. No structure or underlying wood issues. Much cheaper to shingle over it but would that be best if we are planning on staying there permanently? |
| I always strip them off. There are three issues. First is that you will greatly reduce the weight load on the house by taking off the old shingles. Second, you don't want any warranty issues from the new shingle manufacture blaming a failure on the old shingles, and third, is you will never know what the cost of dumping then old shingle will be in the future; I it will cost you a lot more to get rid of the in 10 to 15 years. |
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My first roof lasted 20 years and to save a little money I had a second one installed over it. The second roof only lasted 10 years before it got in bad condition. The last time I stripped both roofs off and installed a new one and it has lasted 21 years but is getting to the point it needs replacing.
I would not put a new roof on an old one. In my opinion they will not hold up. ––IS |
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Quoted:
Taggin this one for info.....not trying to hijack your thread Bama. How much damage did you get? We had a few broken shingles and a lot of the little surface aggregates knocked off. Looked like a coulple of handfulls out of the gutters. Similar situation. 20 year old roof w some hail damage. No structure or underlying wood issues. Much cheaper to shingle over it but would that be best if we are planning on staying there permanently? Some broken, adjuster says the whole roof is shot and needs to be replaced. |
| If the shingles are still in good enough shape you can. Much faster on a shingle over, but its a front thing, back thing. if you do the shingle over you save time and money on the front end. But when time comes to replace again, stripping off and replacing the shingle over and the first roofing is going to be a bit more expensive and time consuming. |
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Quoted:
Quoted:
Taggin this one for info.....not trying to hijack your thread Bama. How much damage did you get? We had a few broken shingles and a lot of the little surface aggregates knocked off. Looked like a coulple of handfulls out of the gutters. Similar situation. 20 year old roof w some hail damage. No structure or underlying wood issues. Much cheaper to shingle over it but would that be best if we are planning on staying there permanently? Some broken, adjuster says the whole roof is shot and needs to be replaced. Insurance should pay for a complete tear off and re-shingle. I just went through this about 7-8 months ago. Added benefit of doing the complete tear off is you'll be able to identify and replace any of the plywood sheeting that might have gone bad in the 20 years. My roof was close to 20 years old and the insurance still paid for the complete job. Thought they'd pro-rate it or something but they didn't. $0.00 out of pocket and that included up to 1.5 sheets of plywood to replace bad spots. |
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I myself would strip it. Gives you a chance to check all the underlayment. My old house in MI had 3 layers when I went to replace it. What a bitch that was to remove. you could have rotten sheathing, and wouldn't hurt to check. bit of a pain to strip it, but i am not one to cover over other problems. |
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Concrete tiles. /thread. No really they are awesome. My roof is 16 years old, warrantied for 50, and looks and performs like new. http://www.hgtvpro.com/hpro/bp_exterior_finishes/article/0,2617,HPRO_20149_4243901,00.html |
| If someone didn't mention it already you definitely want to strip the first layer off for some of the reasons I seen in the first few post but also the added weight will load your walls and can make door no longer open without sanding/adjusting. It's a bullshit habbit that some hack roofers started years ago but should never be done. |
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Quoted:
My first roof lasted 20 years and to save a little money I had a second one installed over it. The second roof only lasted 10 years before it got in bad condition. The last time I stripped both roofs off and installed a new one and it has lasted 21 years but is getting to the point it needs replacing. I would not put a new roof on an old one. In my opinion they will not hold up. ––IS That's pretty typical. Putting new shingles over old normally cuts their life in half. |