How To Install Metal Roofing Over Asphalt Shingles. Step by step guide step 1. Building officials in some areas will only allow a re roof over one layer of shingles while officials in other places may allow you to place the roof over two layers of shingles.
After all you ll be making a significant and long term investment. If you are trying to decide between the two materials it s important to carefully look at the metal over shingle roof problems. It depends on the situation.
Building officials in some areas will only allow a re roof over one layer of shingles while officials in other places may allow you to place the roof over two layers of shingles.
You need to add furring strips over the top of the shingles so you have something to attach the metal panels to. Start putting the metal panels. Your goal with the roofing felt is to make sure everything is as. 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.