The panels overlap allowing water to flow from one panel to the next without being able to penetrate the area under the roofing panel.
Overlaying metal on an existing asphalt roof.
Beveled wood pieces called horsefeathers must be laid along the thick edges of the shakes to make a fairly flat surface.
Their representatives said absolutely not to overlaying shingles with a metal roof.
Can you overlay a metal roof.
The installation of metal roofing involves placing large metal panels on the roof.
Mcelroy metal has develop several methods to recover an existing metal roof using the symmetrical 238t standing seam roof system.
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.
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.
Asphalt shingles can be laid over cedar shakes or shingles however this is a roofing project best left to pros.
However this can only be done once.
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.
238t recover systems provide a long term solution to existing exposed fastened metal roofs that have completed their service life at.
238t metal over metal roof recover systems.
Metal roofing is a commonly used material for several reasons ranging from low cost to durability.
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.
This is what it looks like when you install a steel shingle roof system over an existing asphalt shingle roof.
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.
Unless building codes require it there is usually no need to tear off the old roof.
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.
Before you reshingle a roof read our step by step guide for adding new shingles over old ones.
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.
It is even an option.
Homeowners looking to replace an aging roof have two basic options.
Overlaying asphalt shingles with a metal roof is a big no no.
In general overlaying a new roof takes less time less labor and thus less money.
This can be the first determining factor in your decision.
In fact if you re serious about overlaying your asphalt roof rather than tearing off your existing roof before replacing it a metal roof is often a better choice.
