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I own a older home that is a rental ( so I want to do the roof once and never think about it - if possible), and I need a new roof. The house has a standard peaked roof in the front , but there is a flat roof in the back. Can I put a metal roof on the whole thing ? Could they create an air space under the metal roof tha would make the flat roof more angled ?
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There are metal roofs that are designed for very low pitches but, generally, these roofs are either:
1) Designed and intended for industrial buildings; or
2) Designed and intended for mobile homes.
One benefit of metal roofing is its extreme low weight in comparison to other roofing materials. For that reason, metal is an indeal candidate for building up a pitched roof over the low roof.
Some metal roofs would require solid decking (plywood or OSB) with the new roof while others could be installed over lathe board on top of the new trusses.
For moisture and heat control, any resulting attic space should be vented, with eave (soffit) vents and ridge vent or other roof vent.
I do think that you ought to have a structural engineer evaluate the building to see whether it is appropriate for having a pitched roof built over it.
If that goes well, it is a matter of finding the metal roof you like and then determining whether it can be installed over lathe board or if it would require decking.
Good luck.
10/25/2002
Isaiah Industries, Inc.
10/26/2002