have a roof which has spray foam over shingles. want a new roof. how do i get rid of old?

Question

have a roof which has spray foam over shingles. want a new roof. how do i get rid of old?

Asked by jane smith

have expreienced leaks from this roof and not happy with the performance or the look of foam on my shingle roof

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Answers

Scott Grieves, CPM, CEA's picture

Scrap it off tough job by hand--- recommend get 3 bids and start over to including upgrading to a high quality performing membrane/ sheathing plus the decorative energy star shingles or metal roof. You will hear this mentioned again! Things that Cause Spray Foam Roofing Failure •Bird pecking •Shoddy spray foam application •Unscrupulous contractors applying foam that is not dense enough (three-pound foam is needed, when some contractors apply two-pound) •Foam being applied in temperature conditions that are not optimal or specified •Foam being exposed to the sun •Waiting too long to coat foam layer with roof coating product or primer layer on top •Putting a light coat on top of spray foam layer, which quickly deteriorates •Putting roof paint on top of spray foam layer, which will quickly leave foam exposed •Old roof not having positive drainage, or has sitting pools of water on its surface (not good for spray foam application)