Membrane Roof Over Metal Roof

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.

Membrane roof over metal roof.

No more seam and fastener problems. It leaks the roof has a slight pitch maybe 1 12. However on most measures metal roofing holds its own. 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.

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. As with single ply membranes there are toxicity concerns around some of the materials involved particularly coatings. I m considering putting a steel roof on it. No more cracks and leaks around penetrations.

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 will make your home much more temperature efficient and you can save a lot on utilities. 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. It has an adhesive backing with a peel and stick feature.

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. Excluding water intrusion metal roofs are typically much less susceptible to damage from hail and physical damage than the membrane options. The two layers can be joined by heat this is known as torch on membrane or by roofing cement known as cold membrane.

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.