How to install metal roofing over old shingles with no doubt
So How to install metal roofing over old shingles we make it and here these list of best for your trick and informational reason regarding the How to install metal roofing over old shingles as part of How To Do exclusive updates collection. So, take your time and find the best How to install metal roofing over old shingles photos and pictures posted here that suitable with your needs and use it for your own collection and personal use.Purlins can be used to provide space between the old roofing and the new metal roofing panels. A common installation tactic for adding metal roof over shingles is to add small slats of wood and secure those slats of wood to the roof decking.
Steel shingles weigh about 1/4 what asphalt shingles weigh and aluminum shingles weigh about 1/8. The metal roof must rely on the building’s framework for full support. Although it is fine that you know how to install metal roofing over asphalt shingles, metal roofing always requires more specialized skill sets, making a job best reserved for professionals.
The second way is to install 1×4 purlins over the shingles.
A layer of underlayment installed on top of the existing shingles will help keep the granules of the old shingles from rubbing against the back of the metal and causing possible corrosion. If there are only one or maybe two layers of old roofing on top of the home, the nails or screws used to install the metal roof may still be able to anchor safely into the structural deck of the roof. These slats of wood run perpendicular to the metal roofing itself. A metal roof is a great solution, and as we highlighted above, you can install a metal roof over your existing shingles.
