Metal over Asphalt Shingles

Michael Poli
10/14/2013
I have a building with two layers of asphalt shingles. The deck is in good shape but I have curling shingles. I have been told that I can knock the curl down and put 30# felt over the existing shingles. Then instal a new metal roof over the top. Would this be your recommendation if I don't want to strip the existing roof.
Info @windowsonwashington.net
An informed customer is our best customer.
10/15/2013
Personally...if if were my roof, no. I would strip the roof and take it down to the deck if we are talking about 2 layers.

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