Installing Firestone Epdm Over Existing Roof

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.

Installing firestone epdm over existing roof.

The membrane needs to be completely unfurled and laid flat over the roof surface. The two part drip trim consisting of a back plate that is nailed flush with the top of the roof deck. We are certified by genflex sister company to firestone. Each installation phase is illustrated in the above manual with one or more 3 dimensional drawings.

On a warm day resting can take approximately 30 minutes. Epdm should be bonded over 5 8 plywood 5 8 osb board or polyisocyanurate board with a fiberglass backing. Fullforce epdm fullforce epdm is the only epdm membrane to feature a factory applied adhesive across its entire surface. 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.

Osb3 or exterior grade plywood are both good deck materials for bonding the new. We were hired by firestone due to our certification with genflex to repair a leaking roof. After properly resting the epdm sheet is ready for installation. The specification provided to us stated that we were to fully adhere epdm over the existing epdm after washing.

Without the need for seam tape adhesives or waiting it installs 4 6x faster than standard epdm membrane including seams. Rot if the existing roof deck and supporting timbers are rotten these will need to be removed and replaced. 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. Can i install epdm membrane directly over an existing roof.

Then the rest phase begins which allows the rubber to expand naturally. 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.