Osb3 or exterior grade plywood are both good deck materials for bonding the new.
Installing firestone epdm over existing roof.
The specification provided to us stated that we were to fully adhere epdm over the existing epdm after washing.
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.
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.
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.
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.
Firestone is one of the biggest manufacturers of epdm roofing.
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.
When you go fullforce you can get more squares installed in a day.
Can i install epdm membrane directly over an existing roof.
On a warm day resting can take approximately 30 minutes.
After properly resting the epdm sheet is ready for installation.
Rot if the existing roof deck and supporting timbers are rotten these will need to be removed and replaced.
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 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.