Membrane Roof Over Metal Roof

It leaks the roof has a slight pitch maybe 1 12.

Membrane roof over metal roof.

It has an adhesive backing with a peel and stick feature. When you install a metal roof over or turn your flat roof into a pitched roof a great benefit is that it also adds a layer of insulation for your mobile home. The two layers can be joined by heat this is known as torch on membrane or by roofing cement known as cold membrane. I m considering putting a steel roof on it.

Due to the configuration of the metal roof panels it is first necessary to install an eps expanded polystyrene insulation in between the metal ribs of the roof panels to create a smooth surface to support the 1 1 2 iso polyisocyanurate roof insulation over which the 60mil white tpo roofing membrane is installed. This membrane should be labeled high temperature to withstand the surface temperature of the roof on a hot summer day. While standing seam metal roofs installed on steep slopes snap together and allow any water that gets under the metal to be shed by an underlayer low slope standing seam. As described this system has two layers a base layer that is usually nailed to the deck and a granulated top layer that forms the external part of the roof.

No more seam and fastener problems. However on most measures metal roofing holds its own. Excluding water intrusion metal roofs are typically much less susceptible to damage from hail and physical damage than the membrane options. While metal roofs can offer lower initial installation costs and protection against fire installing a duro last single ply membrane over your metal roof means.

However they can be more susceptible to corrosion from salt spray or chemicals than conventional roof systems such as shingles single ply or modified bitumen in conventional construction the structure supporting the roof system typically consists of pre cambered bar joist rafters spaced 5 to 6 feet apart with a 22 gauge or heavier roof deck. No more cracks and leaks around penetrations. This will make your home much more temperature efficient and you can save a lot on utilities. Many single ply membrane roofs rely on the existing metal roof to function as a structural deck for support and attachment of the roof system including board insulation as well as for support of live snow and wind loads and for providing stability to the roof support members.

Is it possible to put the steel directly on top of the rubber membrane without doing like 2 x 4 framing.