Epoxy Flooring Cost in Sydney: Price Guide
In Sydney, expect to budget about $50–$90/m² for a basic solid-colour epoxy coating, $80–$140/m² for a decorative flake floor, and $100–$180+/m² for a high-build or commercial system. These are indicative installed prices, not fixed rates. Slab repairs, moisture treatment, removal work, access, minimum charges and GST can change your final quote.
A quote can look like a bargain until the installer finds old paint, cracks or moisture in the slab. In a hypothetical 30 m² garage, a low per-square-metre rate may still be overtaken by a minimum job charge and repair costs. I recommend comparing the work included, not just the headline price.
The guide below uses Australian dollars and square metres, the usual measure in Sydney quotes. To compare with a price per square foot, divide the per-square-metre rate by about 10.76. Treat the figures as a starting budget: the slab and the selected product system will decide the final scope.
Sydney Epoxy Flooring Prices and What Each System Includes
These are indicative installed price ranges for epoxy flooring in Sydney. They help you set a preliminary budget, but they are not a guaranteed market rate or a substitute for a site inspection. Ask each contractor to state the product system, preparation, repairs, finish, access assumptions and GST treatment in writing.
| Epoxy system | Indicative installed price | Typical use |
|---|---|---|
| Basic solid-colour coating | $50–$90/m² | Simple finish on suitable, prepared concrete |
| Decorative flake system | $80–$140/m² | Coloured flakes with a protective clear or wear coat |
| High-build or commercial-grade system | $100–$180+/m² | Greater build or a system selected for heavier use |
“High-build” means the coating system is applied at a greater specified thickness than a basic coating; the term alone does not confirm a set thickness or performance level. Confirm the proposed build and product details with the contractor. Prices can overlap because preparation, product choice and site conditions differ.
For a 30 m² area, the ranges suggest these initial totals:
- Solid colour: $1,500–$2,700
- Decorative flake: $2,400–$4,200
- High-build or commercial-grade: $3,000–$5,400+
These calculations simply multiply area by the indicative rate. They do not account for minimum charges or extra work. Small jobs may cost more per square metre because setup, travel and preparation take time even when the floor area is limited.
Check whether the quote includes GST. If it does not, ask for the GST-inclusive total before comparing offers. Also confirm whether removal of old coatings, crack repairs, moisture treatment, coving (a curved floor-to-wall finish), movement-joint detailing and final clean-up are included.
Key takeaway: Compare the total price for the same written scope, not just the rate per square metre.
Concrete Inspection, Moisture Testing and Substrate Preparation
Epoxy needs a sound, clean concrete slab that is prepared to suit the chosen system. A surface that looks dry or smooth may still have moisture, weak concrete or old coatings that can affect adhesion. Inspection and testing should guide the preparation plan before the installer fixes the final price.
A contractor should check for cracks, spalls, weak or flaking areas, previous coatings, oil or other contamination, drainage and possible moisture sources. Ask them to record what they find and explain how each issue will be handled. Do not accept a promise to “coat over it” without a clear, compatible repair plan.
Concrete should be suitably cured. A common starting point is at least 28 days before coating, unless the product manufacturer approves a different timing. Concrete must also meet the selected product’s condition limits. The installer should remove laitance, a weak surface layer of cement, as well as contaminants and coatings that could interfere with bonding.
Mechanical preparation means using a grinder or another specified method to create the required surface profile. The profile is the texture that helps the coating bond. Acid etching is not a substitute for mechanical preparation when the chosen system calls for grinding or another mechanical method. Ask what method will be used and how dust will be controlled.
For flatness, a practical preparation target is no more than 3 mm of deviation under a 3 m straightedge. That is not a universal acceptance rule; the required tolerance depends on the system and how the floor will be used. Where the project specifies concrete surface tensile pull-off strength, ask for at least 1.5 MPa and the agreed test method. Weak or delaminated concrete needs repair, not a coating over the top.
Moisture testing is essential where conditions may threaten the coating. The supplier’s accepted method may include in-situ relative humidity (RH) testing or calcium-chloride testing. Limits such as 75% RH or 3 lb/1,000 ft²/24 h moisture vapour emission rate (MVER) are screening limits used for some systems, not universal pass marks. Use the selected product’s stated maximum.
Moisture vapour or hydrostatic pressure moving through concrete can cause bubbling or delamination. A dry-looking surface does not prove that moisture levels are suitable. If results exceed the product limit, ask for investigation and a compatible mitigation system approved for the measured conditions before coating.
Key takeaway: Price the slab after inspection and testing, and require any extra preparation or moisture work to be listed separately.
Epoxy Application, Slip Safety and Movement-Joint Detailing
A sound epoxy installation follows the product system’s steps and limits. The contractor should specify the primer, coating layers, optional moisture-control layer, flakes or anti-slip aggregate, and final wear coat. The quote should also explain how edges, drains and joints will be treated.
A typical sequence is:
- Prepare the slab mechanically, remove dust, and repair cracks or spalls with compatible materials.
- Apply the specified primer and, if required, a compatible moisture-control layer.
- Apply the specified epoxy layers within the product’s coverage, recoat-window, temperature and humidity limits.
- Broadcast flakes or anti-slip aggregate evenly if included in the scope.
- Apply the specified clear or wear coat, then protect the floor for the stated cure period.
A recoat window is the time range in which another layer can be applied as specified. Ask the installer to identify the product and follow its instructions; a generic “two-coat epoxy” description does not tell you the system thickness or application conditions.
For wet areas or floors where slipping is a concern, specify and verify the finished surface’s wet slip performance for its use. AS 4586 covers slip-resistance classification, while AS 4663 addresses in-situ testing. Do not rely on one DCOF number as a universal acceptance rule for epoxy floors. Added texture may improve grip but can make cleaning harder, so agree on the balance.
Movement joints are gaps designed to allow parts of the slab to move. They should not be rigidly bridged with epoxy if they need to remain active. Ask how the contractor will detail these joints and keep them able to move as required by the system.
Key takeaway: Get the product system, finish, slip requirements and joint details written into the quote before work starts.
Cure Times, Maintenance and Long-Term Floor Protection
Cure time is the period needed for a coating to reach the stage when it can safely take foot traffic or heavier use. These times vary by product and site conditions, so use the manufacturer’s instructions and the installer’s written handover rather than a generic promise.
Ask for separate access times for people, stored items and vehicles. Confirm how temperature and humidity may affect the schedule, and whether the floor needs protection while it cures. If you must keep a garage or work area in use, agree on the access plan before booking the job.
Maintenance depends on the system and its finish. Ask which cleaners and tools are approved, what can damage the surface, and how to deal with spills. Request the product care instructions and warranty terms at handover. A warranty should state what it covers, for how long, and any preparation or maintenance conditions.
Key takeaway: Confirm return-to-use times in writing and follow the care instructions to protect the finish.
Worked Sydney Budget Examples
These examples show how the guide rates work as a starting calculation. They are hypothetical, not contractor quotes. The totals exclude extra work unless noted, so they should not be treated as a promise of the final price.
| Example area and system | Rate used | Base calculation | What may change the total |
|---|---|---|---|
| 18 m² garage, solid colour | $50–$90/m² | $900–$1,620 | Minimum charge, old coating removal, cracks |
| 30 m² garage, decorative flake | $80–$140/m² | $2,400–$4,200 | Repairs, moisture treatment, access |
| 100 m² work area, high-build system | $100–$180+/m² | $10,000–$18,000+ | System specification, slab condition, coving |
The 18 m² example is especially useful when reviewing low advertised rates. A contractor may have a minimum charge, so the actual price could exceed the simple area calculation. Ask for both the calculated rate and the fixed total.
If a quote includes grinding, repairs or moisture mitigation, ask for each item’s scope and cost. If it excludes them, ask what finding would trigger extra work and how the price will be approved. This makes it easier to compare two quotes without assuming that a lower base rate is the better deal.
Key takeaway: Use the table to plan, then replace each allowance with a site-based written quote.
How to Compare Quotes and Avoid Cost Surprises
A useful quote lets you see what you are buying and what could raise the price. It should identify the area, preparation method, coating system, repairs, finish, schedule and GST treatment. If two quotes use different systems or leave out different work, their totals are not directly comparable.
Before accepting an offer, ask:
- Is the quoted area measured in square metres, and how was it calculated?
- What mechanical preparation is included, and what surface profile is required?
- Are moisture testing, crack repairs and old coating removal included?
- What product layers and finish are specified?
- How will active movement joints and edges be detailed?
- Is wet slip performance required, and how will it be checked?
- Is GST included, and are there minimum charges or access fees?
- What written approval is needed before extra work begins?
- What are the cure times, warranty terms and care requirements?
Request a written variation price before extra work starts. A variation is a change to the agreed scope or price. This gives you a chance to understand the cost and approve or decline the work before it is added to the bill.
Be cautious if a contractor will not identify the product, skips moisture checks where they are needed, or offers a firm price without considering slab condition. A low quote is not proof of poor work, but missing scope makes the risk harder to assess.
Key takeaway: Choose the clearest comparable scope, not the lowest headline rate.
Conclusion and FAQs
Sydney epoxy flooring costs depend on both the system and the condition of the concrete. Use $50–$90/m² for basic solid colour, $80–$140/m² for decorative flake and $100–$180+/m² for high-build or commercial-grade work as early budget ranges. Then confirm preparation, moisture suitability, repairs, GST and access in writing.
How much does epoxy flooring cost per square metre in Sydney?
Indicative installed prices are $50–$90/m² for basic solid colour, $80–$140/m² for decorative flake and $100–$180+/m² for high-build or commercial-grade systems. Site preparation and extra work can change the final price.
What is the cost to epoxy a 30 m² garage?
Using the guide rates, a 30 m² floor has a base estimate of $1,500–$2,700 for solid colour, $2,400–$4,200 for flake, or $3,000–$5,400+ for high-build work. Minimum charges and slab repairs may increase those totals.
Do epoxy flooring quotes include GST?
Some quotes may include GST and others may not. Ask for the GST-inclusive total and make sure every contractor is quoting on the same basis.
Why can a small epoxy floor cost more per square metre?
Small jobs may attract a minimum charge. Setup and preparation still take time even when the coated area is small, so the final total may exceed a simple area-times-rate calculation.
Does a concrete slab need moisture testing before epoxy?
Moisture testing can identify conditions that may cause blistering or delamination. Use the test method and maximum moisture limit accepted for the selected product; a dry-looking surface alone does not confirm suitability.
Is acid etching enough preparation for epoxy?
Not when the selected system requires mechanical preparation. The installer should prepare the concrete to the manufacturer’s required profile and remove weak material, dust and contaminants.
How soon can I drive on an epoxy garage floor?
There is no single safe return time for every system. Ask the installer for the product’s stated cure time and separate vehicle-access instructions for the site conditions.
Can epoxy be applied over active concrete movement joints?
Active joints should not be rigidly bridged with epoxy. Ask the contractor how the joints will be detailed so they can keep moving as required.
What should an epoxy flooring warranty cover?
Ask for written terms that state the cover period, what defects are covered, and any preparation, use or maintenance conditions. A warranty should match the product system and agreed work.
What is the best way to compare Sydney epoxy flooring quotes?
Compare the same area, system, preparation, repairs, finish, GST basis, cure plan and warranty. Ask each contractor to price possible extra work clearly and require your approval before the scope changes.
(This article was written by one of our staff writers, Richard Bennett. Visit our Meet the Team page.)