Can you install metal roof over shingles. In a standing seam roof long single panels run vertically all the way from the eave to the ridge. These slats of wood run perpendicular to the metal roofing itself. On has the metal expands and contracts due to weather changes the metal will actually move.
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. 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. The metal used for the roof can be tin copper aluminum or steel.
However there are some things that you will want to check out before doing it this way. On this forum from angies list this person has a strong opinion in favor of metal over asphalt shingles. There is absolutely no reason to remove a structurally sound asphalt roof to install a metal roof other than to add to cost.
One big advantage to metal roofing is its light weight which means metal roofing can be installed over an existing shingle roof. Tens of thousands of metal roofs have been done this way with no problems. Metal roofing weighs less than one pound per square foot.
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. Can you put metal roof over shingles. In terms of performance many homeowners choose a steel roof making it the most popular option when it comes to creating a metal roof over existing shingles.
Other areas will allow you to re roof over two layers. A metal roof is an alternative to a shingle covered roof but a metal roof can actually be installed over shingles. Can you put metal roof over shingles the reason why this is important is because a shingle roof is granulated very similar to sandpaper.
Installing metal roofing over shingles is the best solution. The metal roofing is then secured to these slats of wood on the roof. When choosing to install a metal roof homeowners need to take into account several trade offs involving cost and performance.
Asphalt shingles can weigh up to four pounds per square foot depending on the brand. In some areas building officials only allow a re roof over one layer of shingles. If you dont want to take our word for it check with your local building department.