A pre existing Firestone roof, inNewtonwith a standing water problem needed to be addressed with some new drains. The roof had to layers on it, the first layer being a PVC roof with one inch fiber board, the second being fully adhered EPDM with one inch ISO.
An 8 x 8 by section of the existing roof was cut out and removed. 4×4 pitched ISO sheets (pitch at 1/8 per foot) were mechanically fastened to roof deck, with a four inch roof drain installed in the middle. New piece of EPDM glued to the pitch ISO and tied in with the exist roof.