Single Membrane Flat Roof Finishes

Single membranes are mostly used on large areas on modern structures. They are popular as they can be applied over insulation in a similar manner to liquid applied roofs. Made of sheets of synthetic rubber, heat sealed or glued together with self sealing strips which also secure the membrane to the insulation.

If used where foot traffic is expected, and insulation foam is used, install a plywood base over the foam insulation and under the finished membrane. This makes the surface more robust.

Should be laid by accredited installers and come with a guarantee of about 25 years, although the material is expected to last as long as 50 years. Good quality workmanship extends the life of the material. A maintenance agreement is worth having to protect the length of life of the roof.

Professional help recommended?

If the flat roof is covering a large part of your building and needs major repair or replacement, get a professional survey before proceeding.

Who Pays?

Roof repairs are normally a common responsibility.

Further information

Single Ply Roofing Association

The National Federation of Roofing Contractors 'The Householder's Guide to Flat Roofing'