Installing Firestone Epdm Over Existing Roof

Fullforce epdm fullforce epdm is the only epdm membrane to feature a factory applied adhesive across its entire surface.

Installing firestone epdm over existing roof.

On a warm day resting can take approximately 30 minutes. Then the rest phase begins which allows the rubber to expand naturally. When you go fullforce you can get more squares installed in a day. Each installation phase is illustrated in the above manual with one or more 3 dimensional drawings.

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. After properly resting the epdm sheet is ready for installation. 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. 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.

Can i install epdm membrane directly over an existing roof. The specification provided to us stated that we were to fully adhere epdm over the existing epdm after washing. We were hired by firestone due to our certification with genflex to repair a leaking roof. Epdm should be bonded over 5 8 plywood 5 8 osb board or polyisocyanurate board with a fiberglass backing.

We are certified by genflex sister company to firestone. 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. Rot if the existing roof deck and supporting timbers are rotten these will need to be removed and replaced. The two part drip trim consisting of a back plate that is nailed flush with the top of the roof deck.

The membrane needs to be completely unfurled and laid flat over the roof surface. Without the need for seam tape adhesives or waiting it installs 4 6x faster than standard epdm membrane including seams.