How to Choose an Epoxy Flooring Contractor in Perth
Your complete guide to finding a qualified, licensed, and insured epoxy flooring contractor in Perth. Understand WA licensing requirements, know what questions to ask, and learn the red flags that signal an unreliable operator.
WA Licensing Requirements for Epoxy Flooring Contractors
Building Services (Registration) Act 2011
Under this Act, any contractor performing building work in Western Australia must be registered with the WA Building Commission. This includes flooring installation and coatings work. Registration ensures the contractor meets minimum competency standards and is accountable to a regulatory body.
How to Verify Registration
- 1.Ask the contractor for their Building Commission registration number
- 2.Visit the WA Building Commission website
- 3.Search the online register by name or number
- 4.Confirm the registration is current and check for any conditions
Home Building Contracts Act 1991
For residential building work exceeding $7,500 in value, a written contract is legally required. The contract must include:
- Full scope of work and specifications
- Total contract price or method of calculating the price
- Payment schedule and terms
- Estimated start and completion dates
- Warranty provisions
- Dispute resolution process
- Contractor's registration details
Insurance Requirements
Contractors should carry:
- Public liability insurance — typically $10 to $20 million coverage
- Home indemnity insurance — required for residential work over $20,000
- Workers compensation — if employing staff
Always request certificates of currency before work commences.
8 Questions to Ask Before Hiring an Epoxy Contractor
Asking the right questions upfront protects your investment and helps you identify the best contractor for your project. Here are the eight most important questions — and why they matter.
“Are you registered with the WA Building Commission?”
Under the Building Services (Registration) Act 2011, contractors performing building work in WA must be registered. Ask for their registration number and verify it on the Building Commission's online register.
“What insurance do you carry?”
At minimum, contractors should hold public liability insurance (typically $10-20 million). For residential work exceeding $20,000, home indemnity insurance is required under WA law. Ask for certificates of currency.
“Can you provide a written quote and contract?”
For residential building work over $7,500, a written contract is legally required under the Home Building Contracts Act 1991. Even for smaller jobs, a written quote protects both parties and should detail scope, materials, timeline, and payment terms.
“What coating system do you recommend and why?”
A good contractor will assess your floor and recommend a system based on your use case — not just upsell the most expensive option. Ask about primer, base coat, broadcast (if applicable), and topcoat specifications.
“Do you include a UV-stable topcoat?”
In Perth, UV-stable topcoats are essential for any sun-exposed surface. Some contractors exclude this from base quotes to appear cheaper. Confirm whether it's included and what type (polyaspartic or polyurethane).
“How do you prepare the concrete surface?”
Proper preparation is the most critical factor in epoxy longevity. The answer should include diamond grinding (not acid etching), crack repair, moisture testing, and oil removal. Contractors who skip these steps risk premature coating failure.
“What warranty do you offer?”
Reputable contractors offer at least a 5-year workmanship warranty. Understand what's covered: delamination, hot-tyre peel, yellowing, and wear. Ask whether the warranty is in writing.
“Can you provide references or examples of recent work?”
Ask to see photos of completed projects similar to yours. Better yet, request contact details of recent clients in your area. Check online reviews on Google and social media.
Red Flags to Watch For
These warning signs indicate a contractor who may deliver substandard work, lack proper credentials, or disappear when problems arise.
No Building Commission Registration
Operating without registration is a legal offence in WA. If a contractor can't provide a registration number, do not proceed.
Unusually Low Quotes
If a quote is significantly below competitors, the contractor may be cutting corners on preparation, using inferior products, or not carrying insurance. A garage quoted at $500-800 when others quote $1,500+ is a warning sign.
No Written Quote or Contract
Refusing to provide a written quote or contract is a major red flag. For work over $7,500, it's also a legal requirement under the Home Building Contracts Act 1991.
Cash-Only Payment
Insisting on cash-only payments suggests the contractor may be avoiding tax obligations and is unlikely to honour warranty claims. Legitimate contractors accept bank transfers, cards, or cheques.
No Moisture Testing
Any contractor who skips moisture testing is risking your investment. Moisture is the number one cause of epoxy failure, especially in coastal Perth suburbs and on newer slabs.
Pressure to Commit Immediately
Legitimate contractors provide quotes and give you time to compare. High-pressure sales tactics or "today-only" discounts are signs of unprofessional operators.
Using Acid Etching Instead of Grinding
Acid etching is an outdated preparation method that provides inconsistent results. Professional contractors use diamond grinding for reliable mechanical adhesion.
No Photos of Previous Work
If a contractor cannot show examples of completed projects, they may lack experience. Established operators maintain portfolios of their work.
What a Qualified Contractor Will Do
On-Site Assessment
Visit your property, inspect the concrete condition, take measurements, and discuss your requirements before providing a quote.
Moisture Testing
Conduct a calcium chloride or relative humidity test to check for moisture in the slab — the most common cause of epoxy failure.
Detailed Written Quote
Provide a comprehensive written quote specifying products, preparation method, number of coats, curing times, and total cost.
Surface Preparation
Diamond-grind the concrete surface to create a mechanical bond profile. Repair cracks and remove contaminants before coating.
Multi-Coat Application
Apply a proper system: primer (if needed), epoxy base coat, decorative broadcast (if applicable), and a protective topcoat.
Post-Install Guidance
Provide clear instructions on curing times, when to allow foot and vehicle traffic, and ongoing maintenance recommendations.
Contractor Selection FAQs
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