The membrane is at its most vulnerable after it cures
Fully cured membranes are still damaged by trolleys, dropped tools, screed barrows and mechanical fixings. Protection immediately after testing is part of the waterproofing scope, not an afterthought.
Adhesive and movement
Adhesive systems must be compatible with the membrane, and movement joints in the tiling need to reflect the joints in the structure below. Where waterproofing and tiling sit with one team, these decisions are made together.