p/t deck on a commercial rubber roof do we need closed cell insulation under deck to protect rubber?
First I would put some walk pads down, I don't know if you can purchase them at your local home center. There should be a specialty store that sells vinyl siding they should have them they are about two foot by two foot rubber squares that have dots on them they look like suction cups. Place these pads dots down so that water will drain under the pads, then place a piece of 2" x 8" about 16" long of p/t blocking on top, this will help transfer the load of the deck on the rubber walk pad on the rubber roof. Place the pads and blocks where ever you place your 4" x 4" s You are now ready to start framing the deck. GOOD LUCK!!!
there is any kind of belongings you ought to use to guard your EPDM roof. From extreme density insulation boards to top adjustable helps all reckoning on your roof length, shape and water run off falls.in case you have an activity in looking out greater pop over to our on line shop.
You don't need it to protect the rubberoid roof however considering the relatively low cost of the closed cell foam it would be cheap insurance to add it. A more pressing concern would be the drainage details.
Membrane roofs should not have any sharp edges putting pressure on it. Even a flat square board will sink into the material and the edges are where the problem begins. We put layers of thick tar pads 3/4" under the feet of the air handlers years ago and still no problem.
