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Tiles & bathrooms6 min technical readPublished by ALSAFA DEAL Technical Editorial Team

Bathroom Renovation Checklist: Scope, Tanking Waterproofing & Handover

A comprehensive technical checklist for Dubai bathroom overhauls. Learn liquid membrane tanking, slope creation, drainage traps, and snagging sign-offs.

Direct Answer & Summary

A proper bathroom renovation requires stripping down to raw masonry, applying a elastomeric liquid waterproofing tanking membrane with 24-hour flood testing, re-sloping floor screed toward gully traps, and installing anti-fungal epoxy grout to prevent subfloor water leaks.

Related Commercial Trade Service:

Bathroom Tiling

Specialized bathroom tiling contractors in Dubai and Sharjah. Sub-tile membrane waterproofing, recessed shampoo niches, shower slope screeds, and porcelain wall cladding.

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Technical Warning Signs & Indicators

  • Tiling directly over old tiles without stripping wet-area walls and inspecting PPR plumbing pipes.
  • Skipping the 24-hour water ponding test before floor tile laying.
  • Using standard wall grout in shower enclosures instead of waterproof epoxy grout.

Essential Phases of Bathroom Renovation

Ensuring your bathroom stays leak-free for 10+ years requires disciplined multi-trade execution:

  • Phase 1: Demolition & Piping Inspection — Strip old tiles, check PPR copper connections, and replace concealed valves.
  • Phase 2: Tanking Waterproofing — Apply polyurethane membrane 30cm up walls and 200cm inside shower zones.
  • Phase 3: 24-Hour Flood Testing — Plug drains, fill floor with 5cm of water, and verify zero seepage on lower floor.
  • Phase 4: Tile Laying & Epoxy Grouting — Dual-trowel porcelain tiles and seal joints with anti-mold epoxy.

Essential Questions to Ask Your Contractor

  • Will you conduct a 24-hour water flood test on the waterproofing membrane before tiling?
  • Are concealed PPR water pipes pressure-tested at 10 bar before sealing wall chases?
  • Do you install floor slope gradients of at least 1:80 toward the floor drain?

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