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Thu, Jul 23, 09 at 21:53
| I want to put a second layer of shingles on my garage roof. Can someone explain the proper technique? In particular, I think it will be best to align the top of each shingle in the second layer with the bottom of the tab of a shingle in the first layer. This will allow them to lay as flat as possible. However the first course will be less than a tab height - maybe 4 inches high instead of 5 inches - because of the way the shingles overlap. Is that the way it is supposed to be done? |
Follow-Up Postings:
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- Posted by manhattan42 (My Page) on Sat, Jul 25, 09 at 8:05
| The new shingles need to be installed as indicated by the manufacturer's instructions and without regard to how the shingles below have been already applied. |
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- Posted by harold14370 (My Page) on Sat, Jul 25, 09 at 17:21
| Okay. Thanks. |
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- Posted by rjoh878646 (My Page) on Mon, Jul 27, 09 at 13:36
| Better off stripping it now. Way bigger pain later with 2 layers. |
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| I agree with rjoh Stripping down to decking installing ice sheild (if required) and new tar paper with single layer will last longer. Not only is the overall roof lighter, imagine if the first layer buckles and ruins your new roof? |
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