Replacing Felt Roof With Rubber

There are various options available but the most popular is a foam like board sandwiched between the decking and roof rafters.

Replacing felt roof with rubber.

Once moisture starts to get on the underside of the roofing material you will have to replace it. Most new domestic rubber roofs are glued down to a new wooden roof substrate although they can in certain circumstances be laid on top and mechanically fixed or weighed down with ballast. If there isn t any or it s not enough to meet regulations extra insulation will need to be installed. Basic felt solutions cost around 50 per square metre for the material itself and more high end materials such as modern grp a form of fibreglass going up to 90 per square metre.

When replacing a felt roof the void between the felt and the ceiling will need to be checked for insulation. My preference for domestic roofs is a new install with new roof decking as a single ply membrane. Check for cracked housings on plastic roof vents and broken seams on metal ones. After removing the old roof you can install a new one with minimal effort using ethylene propylene diene monomer epdm rubber.

As described earlier these substances are a contaminate to the glues used in epdm and the membrane itself with direct long term contact. Replace them with rubber washered screws. Full replacement or over boarding of a roof deck. There s really no fix other than replacing the damaged vents.

Rubber roofs are designed to be adhered to your home s roof with a liquid adhesive. Roofing felt is comprised of a base made from natural materials such as wood cellulose or synthetic ones such as fiberglass or polyester and then coated or saturated with a protective coating such as bitumen asphalt which repels water but still allows the product to breathe. You might be tempted to throw caulk at the problem but that solution won t last long. Labour costs may then cost around 150 to 250 per.

Unless the flat roof is a new build you will be replacing an existing flat roof normally a felt roof such as built up bitumen or asphalt. Using any other type of material such as a nail to install your rubber shingles to your roof will create puncture holes that will cause the rubber to leak. Thankfully these are probably the simplest roofs in terms of replacement jobs.