old shingles Articles

Install Metal Over Old Shingles

September 24, 2009

Q: I was given a quote to install a metal roof over the existing shingles. The shingles are very curled on parts of the roof. Is this an issue? The installer stated the curls would break off when they are walking on it during the installation. A: I suggest two things. 1) Always a layer… ( read more )

Standing Seam Over Old Shingles

June 24, 2009

Q: We are considering installing 26 gauge standing seam sealed concealed fastener roofing panels over our existing shingles. We had planned to lay a 30 lb. felt down first but the question I have is that some of the shingles are curling on the tab ends, will this show through the panels? I would appreciate… ( read more )

Can Metal Be Installed Over Two Layers?

June 9, 2009

Dean wrote and asked me: Q: My cottage has one layer of shingles. But my detached garage has two layers. They are getting very old with mold growing on them and are curling in spots. Is it advisable to install metal shingles over the existing layers of asphalt singles? I responded: A: The low weight… ( read more )