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Roof, Basement & Retaining Wall Waterproofing NSW

From rooftops to underground walls, we deliver certified waterproofing solutions and repairs for all exposed and sub-grade structures. Wattaproofing Excellence handles flat roofs, basements, retaining walls, and car park decks.

Roof Waterproofing NSW

Waterproofing You Can Trust

  • Specialized protection for exposed roofs, basements, and retaining walls

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  • Capability to waterproof both above- and below-ground structures

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  • Remedial repairs for leaks, failed membranes, and structural water ingress

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  • Designs tailored to drainage, soil pressure, and building movement

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  • Licensed and compliant to Australian Standards (AS 4654, relevant structural codes)

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  • Clean, safe installation with minimal impact on surrounding areas

Tailored Waterproofing for Every Wet Area

Retaining Wall Waterproofing NSW

We use robust membrane systems suited for harsh environmental and structural demands, such as multi-layer bituminous, liquid-applied, torch-applied or sheet membranes, plus drainage boards and protection layers. Every job considers soil pressure, water table, movement joints, and waterproofing performance under load.

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Remedial work includes diagnosing leaking basements, tunnelling pressure relief systems, repairing failed membranes, and re-certifying retaining walls or roof decks.

Why Choose Us

15+ Years

Industry Experience

$0

On-Site Quote

100%

Licensed & Compliant

7 Year

Workmanship Warranty

licensed waterproofers sydney

Quality You Can Measure

All waterproofing is thickness-tested with PosiTector 200 to meet Australian Standards, ensuring quality and long-term protection and back with a 7 year warranty. 

Our Process

From inspection to certification, every stage is handled with care, transparency, and expert workmanship.

01

Inspection & Assessment

We start with a thorough site inspection to identify waterproofing needs, assess conditions, and recommend the most effective systems for the project.

02

Quotation & System Selection

You’ll receive a clear, obligation-free quote outlining the best materials, methods, and timelines, ensuring quality and compliance from the start.

03

Preparation & Application

Our licensed waterproofers prepare all surfaces, apply certified membranes, and complete every stage to Australian Standards with precision and care.

04

Quality Check & Warranty

Each job undergoes final inspection and certification, backed by our 7-year workmanship warranty and detailed documentation for full peace of mind.

Everything You Need to Know About Waterproofing

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