Overlaying Metal On An Existing Asphalt Roof

The installation of metal roofing involves placing large metal panels on the roof.

Overlaying metal on an existing asphalt roof.

Homeowners looking to replace an aging roof have two basic options. 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. Asphalt shingles can be laid over cedar shakes or shingles however this is a roofing project best left to pros. 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.

It is even an option. 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. Their representatives said absolutely not to overlaying shingles with a metal roof. 238t recover systems provide a long term solution to existing exposed fastened metal roofs that have completed their service life at.

Before you reshingle a roof read our step by step guide for adding new shingles over old ones. 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. Metal roofing is a commonly used material for several reasons ranging from low cost to durability. Can you overlay a metal roof.

This can be the first determining factor in your decision. However this can only be done once. 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. Metal roofs are lightweight easy to install and much more fire resistant than asphalt shingles.

The panels overlap allowing water to flow from one panel to the next without being able to penetrate the area under the roofing panel. In general overlaying a new roof takes less time less labor and thus less money. 238t metal over metal roof recover systems. I got this directly from the 1 metal manufacturer in the us.

Overlaying asphalt shingles with a metal roof is a big no no. 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. 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. This is what it looks like when you install a steel shingle roof system over an existing asphalt shingle roof.

A metal roof should always be applied after the old shingles are torn off completely and new synthetic felt paper is applied. Since metal is so lightweight you don t run as much risk putting too great of a load on your roof system. Unless building codes require it there is usually no need to tear off the old roof.