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Waterproofing service

Shower Waterproofing in Sydney

Leaking shower? We re-waterproof shower recesses and hobless showers properly — strip back, detail every junction and seal with a certified membrane.

  • Licensed & insured
  • AS 3740 / AS 4654 compliant
  • Written workmanship warranty
Shower recess walls coated with waterproofing membrane before tiling

Free site inspection

Fixed-price written quote

The shower recess takes more water than any other surface in your home, so it is the first place a poor membrane will fail. Water finds its way through cracked grout, gaps around the waste or a missing bond breaker and soaks into the bedding, framing and floor below.

We specialise in shower waterproofing for new bathrooms and leaking shower repairs across Sydney — including modern hobless (step-free) showers that demand precise falls and detailing.

Signs you need shower waterproofing

  • Water appearing outside the shower screen after use
  • Stained or peeling paint on the wall behind the shower
  • Dark or crumbling grout lines at the base
  • Tiles that sound hollow when tapped
  • Damp carpet or timber floor in the next room
  • Water marks on the ceiling below an upstairs shower

Shower waterproofing done to last

A shower needs more than a coat of membrane. The detail at the waste, the junction between walls and floor, the hob or step-down and the tap penetrations are where leaks begin. Our process treats each of these with reinforcement and flexible sealants designed to move with the building.

Hobless and level-entry showers

Step-free showers look great and are easier for people with limited mobility, but the whole floor must be graded correctly and a waterstop or linear drain installed at the shower boundary. We work with your builder at the framing stage to set down the floor, plan the falls and select a compatible drain system.

Leaking shower repair options

  • Full strip and re-waterproof — the permanent fix when the membrane has failed
  • Targeted regrout and silicone — suitable for minor, surface-level issues only
  • Leak investigation — moisture mapping to confirm the source before any demolition

We will always tell you honestly which option suits your situation. Quick-fix sealers sprayed onto grout may hide a problem for a few months, but they do not replace a failed membrane.

Our shower waterproofing process

  1. 1

    Leak diagnosis

    Moisture readings and a water test confirm whether the leak is from the membrane, waste, grout or plumbing.

  2. 2

    Strip back

    Tiles and bedding are removed from the affected area back to a sound substrate.

  3. 3

    Falls & waste

    We correct falls to the waste and install a puddle flange or linear drain as required.

  4. 4

    Reinforce & membrane

    Junctions are bond-broken and reinforced, then two coats of membrane applied to the full shower area.

  5. 5

    Flood test & tile-ready

    We flood test before handing over to your tiler, with photos for your records.

Why choose us for shower waterproofing

Hobless, level-entry and traditional shower expertise

Honest diagnosis before demolition

Correct falls and drain integration

Reinforced waste and wall junctions

Fast turnaround to minimise bathroom downtime

Written warranty and certificate

Recent project photos

Shower Waterproofing FAQs

Grout is not waterproof — it only fills the joints. If water keeps escaping after regrouting, the membrane underneath has usually failed or was never detailed correctly, and it needs to be replaced.

Surface sealers and regrouting can reduce minor seepage, but they are not a compliant waterproofing system. For an actual membrane failure, the tiles need to come up.

After waterproofing and tiling, allow the grout and silicone to cure as advised by your tiler — usually a few days. We will give you a timeline in your quote.

Yes. We regularly waterproof level-entry showers with linear drains and waterstops, and can advise your builder on the floor set-down during framing.

Stop leaks before they become costly repairs.

Book a free, no-obligation inspection with Sydney’s waterproofing and painting specialists.