Perth-based specialist contractor

Waterproofing built on preparation.

Practical experience, technical detail and reliable delivery for builders, strata, property managers, consultants and asset owners.

Call Douglas Send a scope

18+ yearscombined hands-on experience

$20 millionpublic and products liability

Director-leddelivery and quality control

WA Waterproofing

Clear scopes. Careful detailing. Straightforward communication.

We assess the substrate, exposure, interfaces and project requirements before application. That means practical system selection, disciplined preparation and waterproofing installed with the details in mind—from penetrations and transitions to joints and terminations.

Core capabilities

Waterproofing across the full building envelope.

New construction, remedial work and specialist systems delivered to project specifications and manufacturer requirements.

Membranes & coatings

Liquid-applied, sheet, bonded, torch-on, self-adhered and spray-applied systems, including protective coatings and polyurea.

Remedial & leak control

Leak investigation, membrane removal, defect rectification, roof-leak repairs and crack, joint or curtain injection.

Below-ground & water-retaining

Basements, retaining walls, lift pits, concrete pools, fire tanks, reverse tanking, waterbars and construction joints.

Preparation & detailing

Substrate preparation, demolition, concrete repair, moisture barriers, penetrations, movement joints and terminations.

Preparation & verification

Measured before it’s covered.

Useful checks during preparation and application help confirm the substrate, falls, detailing and membrane build—not just the finished appearance.

Digital level used to check falls across a rooftop waterproofing substrate

Falls checked

Digital level assessment

Checking the substrate and drainage falls before following work proceeds.

Moisture meter used to assess a wall substrate

Substrate assessed

Moisture readings

Assessing substrate conditions to inform preparation and system application.

Wet-film thickness gauge checking freshly applied waterproofing membrane

Film build verified

Application thickness

Using a wet-film gauge to check membrane thickness during application.

Prepared shower with sealed junctions and penetration detailing before membrane application

Details prepared

Shower preparation

Junctions, penetrations and perimeters prepared before the membrane is applied.

Recent work

Site work, not stock photography.

Examples of preparation, active application and completed systems delivered by WA Waterproofing.

Membrane being applied to basement walls in Carmel — Carmel — Basement wallsBelow-ground membrane application

Completed shower waterproofing at Wanneroo Cricket Club changerooms — Wanneroo Cricket ClubChangeroom waterproofing across 17 showers

Completed rooftop terrace waterproofing in Hillarys — Hillarys — Rooftop terraceFloor, upturn and termination detailing

Completed basement wall waterproofing in Gooseberry Hill — Gooseberry Hill — Basement wallExternal wall and footing-junction protection

Carmel basement wall before waterproofing works commenced — Carmel — Before waterproofingBasement wall substrate prior to application

How we work

A disciplined path from drawings to close-out.

01
Review
Understand drawings, substrates, access and interfaces.
02
Clarify
Confirm preparation, hold points, exclusions and responsibilities.
03
Deliver
Install the approved system with careful detailing and communication.
04
Close out
Provide agreed QA, testing and warranty documentation.

Experienced people on site

Director-led from quotation through delivery.

Douglas and John Beaumont-Clarke bring more than 18 years of combined hands-on waterproofing experience across wet areas, balconies, roofs, basements, retaining walls, water-retaining structures and remedial work.

Douglas has 14 years in construction, including more than 10 specialising in waterproofing. John brings approximately eight years of practical experience across preparation, detailing and membrane installation.

Discuss your project

Send the drawings, scope or site details.

We’ll review the requirements and come back with clear questions, assumptions and next steps.

Call0484 335 486 Emailinfo@wawaterproofing.com.au