Installing Firestone Epdm Over Existing Roof

These step by step installation instructions will assist professional installers to cover a roof with a firestone rubbercover epdm system in accordance with the high standards specified by firestone building products.

Installing firestone epdm over existing roof.

Without the need for seam tape adhesives or waiting it installs 4 6x faster than standard epdm membrane including seams. The epdm membrane is then sandwiched between this a bead of mastic and the front trim which is finally nailed with stainless steel plastic topped pins to finish. Firestone is one of the biggest manufacturers of epdm roofing. You can install epdm membrane over an existing roof only if a new layer of 5 8 plywood 5 8 osb board or polyisocyanurate board with a fiberglass backing is used as a barrier to protect the epdm.

We were hired by firestone due to our certification with genflex to repair a leaking roof. Rot if the existing roof deck and supporting timbers are rotten these will need to be removed and replaced. Can i install epdm membrane directly over an existing roof. On a warm day resting can take approximately 30 minutes.

The two part drip trim consisting of a back plate that is nailed flush with the top of the roof deck. Roof edges pdf wall terminations pdf membrane repair pdf miscellaneous pdf for a complete overview of the installation specifications consult the epdm technical guidelines chapter 3 pdf. Epdm should be bonded over 5 8 plywood 5 8 osb board or polyisocyanurate board with a fiberglass backing. Osb3 or exterior grade plywood are both good deck materials for bonding the new.

If you plan to leave your existing roof covering in place and install a new waterproof membrane over the top you will need to consider the following. Each installation phase is illustrated in the above manual with one or more 3 dimensional drawings. Then the rest phase begins which allows the rubber to expand naturally. Fullforce epdm fullforce epdm is the only epdm membrane to feature a factory applied adhesive across its entire surface.

We are certified by genflex sister company to firestone. The specification provided to us stated that we were to fully adhere epdm over the existing epdm after washing.