ok…so you see the actual membrane or do you see the bottomside of the protec board, remember this board is only 3/16 of an inch…and if the 2ply was put on correctly it is probably alot thinner by now, if not almost flat and transparent…some protec boards are basically just to keep dust and debris from falling thru planks and crevis’…
He probably left the old roll roofing material in place and installed his system directly to the top of that, which is no problem, since their was no previous flat roof insulation board that could have been wet and as long as the decking boards were not rotted.
Maybe it is the 25lb base sheet that is quoted on my contract.
Anyway, the roofers are back today, there is also a small ponding issue that needs to be resolved. The roof has a slight grade to it which is good, but there is a dip that the collects water and greats a decent puddle about 5 feet in diamter and talk up to a week to evaporate (we are in Toronto).
Any recommendations on how to mitigate the ponding. Can the area be built up and membraned over?