Membrane Roof Over Metal Roof

Tar and gravel first let s talk about what makes a good tar and gravel roof work.

Membrane roof over metal roof.

Single ply roof systems are also lightweight and utilized for retrofits over existing metal roofs figure 2. You don t have to do any work or remove any parts on the original roof. Cost installed per sq. If you have a tar and gravel low slope roof typical of constructions in many areas in montreal you may consider changing the roofing material to something else.

Selecting the right underlayments for a lifetime metal roof should be a primary concern for anyone thinking about specifying or choosing to install a metal roof on their home. Spray applied liquid roofing systems by their very nature being liquid will conform to any roof shape. 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. A mobile home roof over creates a unique opportunity to completely change the look of the home.

Here are the advantages to installing a metal roof over. Less labor is needed and there are much smaller refuse fees. Additionally pvc roofs are consistently chosen by homeowners looking to install an eco friendly green system over their flat or low slope roof. And metal roofs come in a variety of different profiles contours making waterproofing a challenge if using sheet type methods.

Polymer modified roof membranes often referred to as modified bitumen are an improvement over built up roof systems and have been in use since the 1960s. A mobile home roof over involves placing a new roof or roofing material over your existing roof there s little to no material removed which can keep costs down. Roof over materials 1. Example of a single ply over metal retrofit assembly.

The reinforcing fabric and bitumen binder are combined into a single roll which makes installation easier. Many single ply membrane roofs rely on the existing metal roof to function as a structural deck for support and attachment of the roof. Expect to pay in the range of 6 50 to 12 50 per sq. For a mechanically attached residential pvc 50 mil membrane installed over a flat or low slope roof on a single.

Two common alternatives to tar and gravel are two ply membrane assembly and standing seam hidden fastener metal panels. Single ply over metal. The ideal waterproofing method for metal roofs are liquid applied membranes. The quality and type of underlayments used on the project in the long term will affect the overall performance of the roof.