Putting New Metal Roof Over Old Metal Roof

A benefit to doing it this way is that you can see if there is any rotten plywood that needs to be replaced before installing the new roof.

Putting new metal roof over old metal roof.

Well that s why the metal roof is such like an eco friendly product because you don t have to get rid of all of that stuff to the landfills. In a standing seam roof long single panels run vertically all the way from the eave to the ridge. Installing a new roof over an existing one also called a layover or nailover is often possible although not always the best option. If you want to install steel over asphalt your best choice for installing metal roofing is to use a steel shingle system like the one shown instead of the more common and more expensive standing seam steel.

Insulation may be used over the roof hugger to add insulation to a building but the cavity can also be left open. The installation of metal roofing is often easier and faster than other roof types and because of its simple design and generally large size can actually be installed directly on top of existing roofing materials like asphalt shingles and foam roofing. In over 30 years and tens of thousands of installations over old shingles i have yet to go back on a job later and find myself saying hmm maybe the old shingles should have been removed. The warranty on your new metal roof at least from my company will not be impacted at all by going over the old shingles.

Metal over metal retrofit considerations there are a number of issues a roofer will have to deal with when it comes to metal over metal retrofits but listed below are a few where the use of a roof hugger. But now that i said that i would tell you that if it was my house i probably would and the reason is i don t want to have all those old shingles under the roof. Should you tear off the old roof and start over or simply remove the fasteners from the existing roof and install another roof over it. A properly installed layover roof can look and function as well.