Metal Roof Over Existing Roof

While metal roofs are routinely installed over existing shingle and asphalt roofs those existing roofs must be up to par for you to reap the long term benefits.

Metal roof over existing roof.

Installing metal roofing over existing shingles is an excellent way for building owners to not only maximize the longevity of their new roof but also to save on roof tear off expenses. 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. Can you install metal roofing over existing shingles. 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.

Choose a shingle style with the same dimensions as those on your. If you have more than two layers of existing roofing material something s gotta give. You will need to do a thorough inspection of your current roof. Ideally a metal tile shake or shingle roof should only be installed over one or at most two layers of existing roofing and providing that the existing roof framing and decking is in good condition.

A good way to determine good condition is to walk around on the roof you re considering covering to look for soft spots or evidence of weak rotten or compromised structural components. Although many metal roof systems can be applied over an existing roof layovers are more commonly done with asphalt shingles. How many layers are there.