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Waterproofing service

Waterproofing Repairs & Remediation in Sydney

Remedial waterproofing for failed bathrooms, balconies, roofs and podiums — from defect reports to complete strip-and-replace solutions.

  • Licensed & insured
  • AS 3740 / AS 4654 compliant
  • Written workmanship warranty
Bathroom stripped back and prepared for remedial waterproofing

Free site inspection

Fixed-price written quote

Waterproofing failures rarely fix themselves. By the time a leak is visible, water has usually been escaping for months, damaging substrates, framing and finishes. Remedial waterproofing tackles the cause and restores the building properly.

We specialise in remedial works for homeowners, strata schemes and commercial buildings — from a single leaking shower to building-wide balcony programs.

Signs you need waterproofing repairs & remediation

  • A defect report or building inspection highlighting leaks
  • Repeated leaks after previous "quick fixes"
  • Visible damage to ceilings, walls or floors
  • Mould growth linked to water ingress
  • Insurance claims relating to water damage
  • Strata committee planning capital works

How we approach remediation

Remedial waterproofing starts with understanding why the original system failed — poor falls, missing details, the wrong product, building movement or simple wear. Fixing the symptom without addressing the cause usually means the leak returns.

Remedial services

  • Leak investigation and moisture mapping
  • Scope-of-works and quotations for strata and insurers
  • Strip-out of failed tiles, screeds and membranes
  • Substrate and concrete repairs
  • New membrane systems and detailing
  • Reinstatement coordination with tilers and painters

Non-invasive options

Where the membrane is sound but grout, silicone or tile surfaces are letting water in, targeted treatments such as regrouting, resealing or clear penetrating sealers may be appropriate. We will only recommend them when they are genuinely suitable.

Our waterproofing repairs & remediation process

  1. 1

    Investigate

    Moisture readings, water tests and inspection to find the cause.

  2. 2

    Report & scope

    Findings, photos and a clear scope of works with options.

  3. 3

    Remove

    Failed finishes and membranes are removed safely.

  4. 4

    Rebuild

    Substrates repaired, falls corrected and new systems installed.

  5. 5

    Test & document

    Flood testing, photos and warranty documentation.

Why choose us for waterproofing repairs & remediation

Root-cause diagnosis, not band-aids

Scope reports for strata and insurers

Full strip-and-replace capability

Honest advice on non-invasive options

Minimal disruption in occupied buildings

Documented, warranted results

Recent project photos

Waterproofing Repairs & Remediation FAQs

Policies differ. Many cover resulting damage but not the failed membrane itself. We can provide reports and quotes to support your claim.

Yes. We provide findings, photos and scope options to help committees make informed decisions.

Common causes include inadequate falls, missing bond breakers, poor detailing at penetrations, insufficient membrane thickness and building movement.

For single-room works usually not. For larger remediation we plan stages to keep disruption to a minimum.

Stop leaks before they become costly repairs.

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