Roofing Over Existing Aluminum Panels

Metal over metal retrofit considerations there are a number of issues a roofer will have to deal with when it comes to metal over metal retrofits but listed below are a few where the use of a roof hugger system may help resolve.

Roofing over existing aluminum panels.

Mcelroy metal has develop several methods to recover an existing metal roof using the symmetrical 238t standing seam roof system. Aluminum is a much lighter metal so weight would not be an issue if a homeowner or business owner wanted to upgrade their existing roofing system. Many metal roofing systems can be installed over 1 2 layers of existing asphalt shingles saving time labor and landfill costs. Mcelroy s patented recover system is commonly utilized over existing thru fastened panels.

On the other hand aluminum is a great choice for buildings located on a coast line or projects that will involve retrofitting a metal roof over existing shingles. Complete and separate roofing systems such as standing seam metal roof panel systems that are designed to transmit the roof loads directly to the building s structural system and that do not rely on existing roofs and roof coverings for support shall not require the removal of existing roof coverings. As long as the plywood under the shingle roof is in good condition this way can provide many benefits. Lay a metal roofing panel over the existing roof material in the bottom corner of the roof surface and fasten to the roof according to the metal panel instructions.

Canadian drugs we have recently completed a metal reroof project. 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. This is by far the most common way to install a metal 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.

If the roof on your existing project doesn t have an exposed fastened roof system no problem. As with most older metal buildings the metal roof panels had expanded and contracted over time causing the roof to leak. Should you tear off the old roof and start over or simply remove the fasteners from the existing roof and install another roof over it. Our goal was to provide a water tight roofing system by installing a tpo roofing system and increase the r value of the roof by installing a eps flute filler and iso roof insulation.

For worn out existing metal roofs mcelroy metal s frameless 238t metal over metal recover system is the industry s best recover solution. Metal roofing materials are available in several styles that require different fastening applications but are most commonly screwed to the roof framing or sheathing material. If you are placing metal panels over an existing roof you still use purlins. The purlins not only give you something other than the existing roof to accept the roof panel fasteners they also create an airspace between the roof panels and the existing roof.

Before you decide to install a metal roof over existing asphalt shingles you need to answer a number of important questions.