Membrane Roof Over Metal Roof

No more cracks and leaks around penetrations.

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. 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. It leaks the roof has a slight pitch maybe 1 12. As with single ply membranes there are toxicity concerns around some of the materials involved particularly coatings.

This is a roof membrane underlayment made up of either a rubberized asphalt or butyl based adhesive with a polyethylene carrier sheet. Excluding water intrusion metal roofs are typically much less susceptible to damage from hail and physical damage than the membrane options. No more seam and fastener problems. 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.

This will make your home much more temperature efficient and you can save a lot on utilities. However on most measures metal roofing holds its own. 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. 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.

Hello i am in the process of buying a building that currently has a 30 year old rubber membrane roof. I m considering putting a steel roof on it. This membrane should be labeled high temperature to withstand the surface temperature of the roof on a hot summer day. 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.