It is even an option.
Overlaying metal on an existing asphalt roof.
Available systems include a patented frame less metal over metal recover option that provides a low cost retrofit solution over existing exposed fastened panels with ribs up to 1 5 tall.
This can be the first determining factor in your decision.
If you already overlayed a roof over an existing one your only option for another new roof is to remove everything that s there already.
Overlaying asphalt shingles with a metal roof is a big no no.
Can you overlay a metal roof.
The panels overlap allowing water to flow from one panel to the next without being able to penetrate the area under the roofing panel.
Unless building codes require it there is usually no need to tear off the old roof.
Asphalt shingles can be laid over cedar shakes or shingles however this is a roofing project best left to pros.
I got this directly from the 1 metal manufacturer in the us.
Their representatives said absolutely not to overlaying shingles with a metal roof.
The installation of metal roofing is often easier and faster than other roof types and because of its simple design and generally large size can actually be installed directly on top of existing roofing materials like asphalt shingles and foam roofing.
Venting the eaves to vent the roof holes are cut in the old roof above the soffit which pulls air through the soffit vents underneath.
Doesn t provide the flattest surface for the metal roofing to be installed over each course of shingles is about a 1 8 higher than the course just below it.
Mcelroy metal has develop several methods to recover an existing metal roof using the symmetrical 238t standing seam roof system.
Beveled wood pieces called horsefeathers must be laid along the thick edges of the shakes to make a fairly flat surface.
The installation of metal roofing involves placing large metal panels on the roof.
They can either strip off the old roof and replace it with a new asphalt roof or they can install metal roofing over the existing asphalt shingles.
This is what it looks like when you install a steel shingle roof system over an existing asphalt shingle roof.
Since metal is so lightweight you don t run as much risk putting too great of a load on your roof system.
Metal roofs are lightweight easy to install and much more fire resistant than asphalt shingles.
Homeowners looking to replace an aging roof have two basic options.
3 install 1x4 purlins down over the shingles before installing the metal roof the third way to install a metal roof over shingles is by applying 1x4 purlins over the shingle roof.
However this can only be done once.
In general overlaying a new roof takes less time less labor and thus less money.
Metal roofing is a commonly used material for several reasons ranging from low cost to durability.
Before you reshingle a roof read our step by step guide for adding new shingles over old ones.
238t metal over metal roof recover systems.
