Top 9 Waterproofers in Perth, Western Australia
There are currently 9 highly-rated waterproofing businesses in Perth, Western Australia listed on TradeRefer, with an average Google rating of 4.1★ across 688 verified reviews. The 9 listed below are ranked from highest to lowest rating, all ABN-verified and community-recommended.
Ranked #2026
By Google Rating
4.1★ Avg Rating
688 Google reviews
100% Verified
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9 Businesses
In Perth
Top 9 Waterproofing in Perth — Ranked by Customer Rating
Compare the highest-rated waterproofing in Perth, Western Australia. All businesses listed are ABN-verified and surfaced without paid placement.
Perth Waterproofing & Silicone Solutions
Perth Waterproofing & Silicone Solutions offers waterproofing for bathrooms, balconies, and foundations in Balga, WA. With 1 customer review and a focus on quality workmanship, they serve homes and businesses across the Balga area. Contact Perth Waterproofing & Silicone Solutions for a free quote.
Commercial Leak Repairs - CLR
Commercial Leak Repairs - CLR is a 5-star rated waterproofing business serving Bassendean, WA with 1 reviews.
AllSealedWA
Searching for a fix of a leaking shower, grout or balcony repairs in Perth? We will do it smoothly. Moreover, shower & bath waterproofing is also our expertise.
Allduro
Allduro is Western Australia's largest independent supplier of waterproofing and surface protection materials. Located 14 Vulcan Rd Canning Vale.
Antidamp WA
Antidamp WA Established in 1987, Antidamp WA provides domestic and commercial damp solutions to the Perth metro and regional areas of Western Australia.
BUSS Waterproofing & Concrete Remediation
BUSS Remediation: specialist contractors for concrete repairs, façade remediation, waterproofing & joint sealing services. Call 9444 1732.
Auswest Coatings
Auswest Coatings is a 4.3-star rated waterproofing business serving Armadale, WA with 4 reviews.
WA Project Waterproofing
One of Western Australia’s largest and most progressive waterproofing and silicone companies which serves both Commercial and Residential builders.
Industrial Building Services
Industrial Building Services is a 0.00-star rated waterproofing business serving Belmont, WA .
How Much Do Waterproofing Cost in Perth?
Pricing data based on Australian industry averages for Western Australia. Always get 2–3 written quotes.
Typical Range
$30–$80
/m²
After-Hours Rate
$120
Emergency callout
Avg Hourly Rate
$55
Perth market average
Prices are estimates only. Always request a written quote before authorising any work.
Waterproofing Licensing Requirements in Western Australia
In WA, waterproofing must comply with AS 3740. Contractors should hold appropriate building services registration.
How to Choose the Best Waterproofing in Perth
Use this checklist before hiring any waterproofing in Perth, Western Australia.
- 1
Verify their electrical licence is current at your state's electrical safety authority (e.g. Energy Safe Victoria, NSW Fair Trading).
- 2
Confirm they carry public liability insurance of at least $5 million — ask to see the certificate.
- 3
Get 2–3 written quotes for any job over $500. A written quote protects both parties and clarifies the full scope.
- 4
Check their Google and TradeRefer ratings — look for consistent reviews mentioning punctuality, clean workmanship, and clear communication.
- 5
Ask whether they'll provide a Certificate of Compliance (electrical safety certificate) on completion, as required by law in most states.
Frequently Asked Questions — Waterproofing in Perth
How much does bathroom waterproofing cost in Australia?
Waterproofing a standard shower costs $300–$600. A full bathroom including shower, floor, and bath area costs $500–$1,200. Balcony waterproofing costs $80–$150/m². These are labour costs only — materials add $50–$200 depending on the membrane system used.
Do I legally need to waterproof my shower?
Yes — AS 3740 (Waterproofing of domestic wet areas) is mandatory under the National Construction Code. All showers, bath surrounds, laundries, and balconies must be waterproofed to this standard. Failure to comply can void home insurance claims related to water damage.
How long does waterproofing last in a shower?
A quality waterproofing membrane correctly installed should last 10–15 years minimum. Cheap products or incorrect installation fail much sooner. The grout and tile system on top doesn't waterproof the shower — the membrane underneath does. Grout cracks don't mean the waterproofing has failed.
How do I know if my shower is leaking?
Signs include damp patches on adjacent walls or floors, mould behind tiles, peeling paint, efflorescence (white mineral deposits), soft or spongy tiles, or a musty smell. A licensed waterproofer can perform a flood test to confirm leakage before expensive rectification work begins.
Can you waterproof over existing tiles?
Generally not recommended for showers. If the existing tiles are sound and firmly bonded, a liquid membrane can be applied over them in some scenarios. However, if there are any cracked, hollow, or loose tiles, these must be removed and the substrate repaired before new waterproofing is applied.
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