You inspect a flat roof right after the rain, because that is when it shows itself. We walked this EPDM roof in the wet — mapped the ponding, an un-taped lap seam, a torn corner at the drain, and what was still holding — and delivered a 13-photo written report.
Standing water across a flat EPDM roof after rain, with twigs and leaf debris pinned in the ponding and an inspector’s boot at the water’s edge for scaleClose-up of a horizontal EPDM lap seam without cover tape, the membrane edge lifting slightly above the rain-wet fieldFingertip pointing to torn, bunched EPDM membrane at a corner drain fitting on a flat roof edge, where the sheet should lap flat and sealedRubber pipe boot flashing sealed tight around a cast-iron plumbing vent penetration on an EPDM roof, ringed by standing water after rainMetal step flashing bedded in a continuous sealant bead where a flat EPDM roof meets brick masonry, photographed wet after rain
