Resolve the floor arrangement first
Agree falls, drain positions and door thresholds before applying the waterproofing layer. The membrane does not create suitable drainage by itself. Changes made after coating can disrupt continuity, so coordinate plumbing and floor work in advance. Identify who approves the layout and who records any revised detail.
Inspect corners, penetrations and returns
Wall-to-floor transitions, drains and pipes interrupt the field of application. Review the required treatment for the selected system rather than treating them as ordinary broad surfaces. Determine the extent of wall waterproofing from the design and use. Do not invent a universal upstand height independent of the specification.
Plan inspection and any test before concealment
Arrange the agreed inspection after the specified curing stage and before tiling covers the membrane. Any water test needs a suitable method, permission and consideration of the structure and adjoining property. Record the test conditions and findings. Passing a test does not justify omitting protection during the subsequent finish work.
Protect the handover to the tiler
Confirm compatible adhesives and how the tiling trade will avoid punctures, contamination and unintended traffic. Include refitting and service reinstatement in the responsibilities. Read bathroom-service information and use the handover checklist.