Putting New Metal Roof Over Old Metal Roof

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.

Putting new metal roof over old metal roof.

A properly installed layover roof can look and function as well. Installing a new roof over an existing one also called a layover or nailover is often possible although not always the best option. 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. In a standing seam roof long single panels run vertically all the way from the eave to the ridge.

Insulation may be used over the roof hugger to add insulation to a building but the cavity can also be left open. 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. They are notched to fit over top of your existing metal roofing profile and are installed directly on the existing purling. The roof hugger metal roof overlay system is sub purling usually made from 16 gauge steel in 10 12 ft lengths.

1 remove the shingles before installing the metal roof the first way to install a metal roof over shingles is by completely removing the old shingles before installing the new 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. 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. 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.