windy, extreme temps and asphalt shingles

Guest User
8/5/2011
Can i install directly over what's left of an asphalt roof and how do I make sure the roof is installed properly here where it gets very hot (110+) and very cold (-22) and is sometimes extremely windy? thank you pb [email protected]
Todd Miller
Isaiah Industries, Inc.
8/5/2011
The low weight of metal roofing encourages installation over old shingles provided there is a good deck in place for fastening and also provided local building codes allow the practice. I do suggest a layer of underlayment over your old shingles. As far as installation, an experienced contractor is a wise choice. Also, the manufacturer of your product should have detailed installation instructions available to you.
Eric Novotny
An informed customer is the Best Customer!
8/6/2011
In nearly all cases, yes. You will need to check with the metal manufacturer for their specific guidelines. Being in AZ, I would prefer to see the asphalt off of the roof to eliminate the additional thermal mass but it is not a requirement.
Guest User
8/6/2011
thank you. I don't know if I can convince a contractor to come out as far as my place is ... and stay within a budget. (I'm far away from everything.) so I'm researching how to do this myself and make it last. My main concern is protecting the roof from disintegrating in the wind. thanks. pb

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