30# felt

Old 03-06-01, 09:51 PM
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If I am putting asphalt shilgles over an existing layer of the same, should I put down another layer of 30# felt before the shingles?
Old 03-07-01, 03:16 AM
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yes but you should cosider tearing off the old layer(s)of shingles.extra weight, code compliance new shingles dont last as long would look better and on and on
Old 03-07-01, 08:58 PM
Join Date: Mar 2000
Location: Arlington, WA
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Mrmojo is absolutely right. You'll extend the life of the new roof greatly if you remove the original roof first. And, depending on where you live, what you have for trusses (or joists and rafters), etc., even adding a second layer of roofing may not be permitted by your local bldg. dept. Better check first.

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