I just learned a bit more about drains now. But we usually use new products after tear off so all things i will use to my knowlegde. Thanks to this video also.
my only problem is the exposed edge of the iso. many manufacturers will require seperator sheets or the paper face be there as it can prematurely age and damage tpo and pvc membranes. beyond that, i like it. though IBC12 requires the minimum hole cut in the flashing be 4" or the size of the pipe, whichever is bigger.
Is this for all roofing systems or just some I’m very confused I’ve been roofing for 2 years and I’ve never seen and unsupported patch installed on drains
No drain sump, that's not ideal, but interesting. I believe a general guideline is to keep the center hole at least an inch smaller in diameter than the drain pipe itself while maintaining a 1" minimum amount of PVC inside the drain bolts. Flat and wide drain hubs are also better