How to do a reroof over an existing roof?
October 17, 2008 7:41 AM Subscribe
Reroofing: Should 15# felt used when doing a roofover on an existing asphalt/mineral 3-tab roof? The existing roof is is fair condition, so a tearoff isn't absolutely required.
posted by toucano to Home & Garden (5 answers total)
I don't find much on the internet that tells much about roofover details. One site made it sound like felt was not required and that the new courses should line-up with the old course below. I can see how that would simplify the process and help to keep horizontal lines nice and even. But is that correct?
Any advice appreciated. TIA.