WATERPROOFING AND COMMERCIAL WET-AREA TILING
Tiles and grout alone should not be treated as the waterproofing strategy. Wet-area performance relies on a coordinated background, waterproofing system, drainage details and compatible finishes.
Technical note: This is general project-planning guidance, not a specification or design approval. Check the current project documents, applicable standards and system manufacturers' instructions.
Define the wet-area requirement
Establish the intended water exposure, substrate and design responsibility for each area. A standard washroom and a frequently used shower have different demands; the project's specification should identify the required build-up.
Use a coordinated system
Confirm compatibility between boards or screeds, primers, membranes, adhesives, grout and sealants. Pay particular attention to manufacturer requirements and interfaces between proprietary products.
Detail junctions and penetrations
Review wall-to-floor junctions, corners, drains, pipes, thresholds and movement provision before installation. These details often determine whether the complete assembly works as intended.
Include inspection and handover
Agree required inspections and any specified tests before finishes conceal critical details. Record completion and product information as part of the handover requirements.
The key takeaway
Agreeing who designs, installs and signs off the waterproofing system is as important as selecting the visible tiles.
Relevant service: Commercial wall tiling · All technical guidance
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