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Bathroom & Kitchen Waterproofing

Bathroom waterproofing places a water-tight layer under the tiles on the floor, the lower walls and the shower area, preventing leaks into the ceiling below or adjoining walls. For an existing leaking bathroom, many cases can be treated by injection or joint sealing without full demolition once the source is identified.

Illustration of a villa with roof, tank and floor insulation and wall repair in progress
Illustration of a villa with roof, tank and floor insulation and wall repair in progress — Illustrative image

When do you need bathroom & kitchen waterproofing?

  • Damp patches on the ceiling of the room below
  • Peeling paint on the wall next to the bathroom
  • Musty or mould smell
  • Loose tiles or blackened grout

Early warning signs

  • Ceiling stains below the bathroom that grow after showers
  • Discoloured or eroded grout
  • Hollow sounds or water under tiles
  • Bubbling paint on the shared wall

Materials and systems we use

Material / systemUse and advantages
Flexible cementitious waterproofing (two-part)The most common under-tile system; tolerates slight movement.
Liquid polyurethane or acrylic membraneSeamless layer for floors and corners.
Reinforcement tapes for corners and drainsPrevent cracking where floor meets wall and around drains.
Injection materialsInjected into joints and cracks to block the water path without full demolition.

How Azl carries out the work

  1. 1Locate the leak electronically before any demolition
  2. 2Remove tiles only in the affected area when needed
  3. 3Clean the floor and correct falls toward the drain
  4. 4Install corner and drain tapes
  5. 5Apply two perpendicular coats turned up the walls
  6. 6Flood-test before re-tiling

Warranty and compliance

You receive a written warranty whose period depends on the insulation type and surface condition, with a handover report documenting materials and tests (flood, adhesion, thickness).

Bathroom & Kitchen Waterproofing by city

Different technical recommendations for each city based on climate, groundwater and soil.

Riyadh Region

Makkah Region

Madinah Region

Eastern Province Region

Qassim Region

Asir Region

Tabuk Region

Hail Region

Northern Borders Region

Jazan Region

Najran Region

Al Baha Region

Al Jouf Region

Bathroom & Kitchen Waterproofing: frequently asked questions

Can a bathroom be waterproofed without breaking tiles?

Often yes, if the leak comes from joints or specific edges, using injection or clear coatings over the tiles. If the source is a broken pipe or fully failed original waterproofing, limited partial removal is necessary.

What causes damp on the ceiling under a bathroom?

Usually one of three causes: failed waterproofing under the tiles, leaking supply or drain pipes, or leaking joints around the shower or bathtub. Electronic leak detection pinpoints the cause before repair.

How high should waterproofing go on bathroom walls?

It is normally turned up the lower part of the surrounding walls and taken higher in the shower area, which gets the most water, following the material and design specifications.

Is kitchen waterproofing necessary?

It is recommended, especially on upper floors and around the sink and dishwasher, because any leak there reaches the ceiling below.

Related services

Water Leak Detection

Electronic water leak detection without demolition using acoustic and thermal equipment.

Details

Waterproofing

Membrane, bitumen and liquid waterproofing systems for roofs, foundations and wet areas.

Details

Water Tank Insulation

Clean water, a sealed tank

Insulation for underground and rooftop tanks with materials safe for drinking water, plus crack and leak repair.

Details

Book an inspection for bathroom & kitchen waterproofing

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