Membrane Roof Over Metal Roof

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.

Membrane roof over metal roof.

This is a roof membrane underlayment made up of either a rubberized asphalt or butyl based adhesive with a polyethylene carrier sheet. This membrane should be labeled high temperature to withstand the surface temperature of the roof on a hot summer day. As with single ply membranes there are toxicity concerns around some of the materials involved particularly coatings. 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. However on most measures metal roofing holds its own. This will make your home much more temperature efficient and you can save a lot on utilities. It has an adhesive backing with a peel and stick feature.

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. I m considering putting a steel roof on it. 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. 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.

No more cracks and leaks around penetrations. Excluding water intrusion metal roofs are typically much less susceptible to damage from hail and physical damage than the membrane options. Is it possible to put the steel directly on top of the rubber membrane without doing like 2 x 4 framing. It leaks the roof has a slight pitch maybe 1 12.

No more seam and fastener problems.