What Is The Best Concrete Sealer?

The best concrete sealer depends on the type of concrete surface, level of protection required and the finish you want to achieve. Solvent-based concrete sealers are popular for exposed aggregate, decorative concrete and concrete driveways because they enhance colour and can provide a semi gloss finish. Water-based concrete sealers are often chosen where lower odour and reduced VOC levels are preferred.

How Much Concrete Sealer Do I Need?

Coverage rates vary depending on the concrete sealer, surface type, porosity and number of coats applied. Use the coverage calculator located on each product page to estimate the amount of concrete sealer required for your project.

How Many Coats Of Concrete Sealer Should I Apply?

Most concrete sealers achieve the best results with two coats. Many water-based concrete sealing systems require a primer coat followed by two top coats. Always refer to the Technical Data Sheet (TDS) for product-specific recommendations.

How Long Does Concrete Sealer Last On Driveways And Exposed Aggregate?

Most concrete sealers last between 2 and 7 years depending on the product type, traffic levels, UV exposure, weather conditions and ongoing maintenance. Regular cleaning and maintenance can help extend the life of a sealed concrete surface.

How Do I Prepare New Or Green Concrete Before Sealing?

New concrete must be allowed to properly cure before applying concrete sealer. The surface should be clean, dry and free from curing compounds, laitance, debris and contaminants. Always refer to the Technical Data Sheet (TDS) for minimum curing times and preparation requirements.

Can Concrete Sealer Be Applied Over An Existing Sealer?

Application over an existing concrete sealer depends on the type and condition of the original coating. Some concrete sealers are compatible with existing coatings while others may cause adhesion issues, whitening, peeling, bubbling or coating failure.

What Is The Difference Between Solvent-Based And Water-Based Concrete Sealer?

Solvent-based and water-based concrete sealers are formulated differently and each has advantages depending on the application. Water-based concrete sealers are often chosen for their lower odour, easier cleanup and reduced VOC levels. Solvent-based concrete sealers are commonly used where fast drying times, compatibility with existing coatings or specific finish characteristics are desired.

Should I Dilute The First Coat Of Solvent-Based Concrete Sealer?

For dense or less porous concrete surfaces, the first coat is often diluted with up to 30% xylene to improve penetration and adhesion. For highly porous concrete, dilution is often not required. Always refer to the Technical Data Sheet (TDS) for product-specific recommendations.

Can Xylene Be Used For Concrete Sealer Cleanup?

Yes. Xylene is commonly used for cleaning rollers, brushes and equipment after applying solvent-based acrylic concrete sealers. It should only be used with compatible products and handled in accordance with the Safety Data Sheet (SDS).

How Long Before I Can Walk On A Sealed Concrete Surface?

Many sealed concrete surfaces can be lightly trafficked after approximately 3 to 5 hours and walked on after 12 to 24 hours following the final coat. Drying and curing times vary depending on the product and environmental conditions.

Hydrochloric acid 33 percent for concrete surface preparation, acid etching and concrete cleaning before sealing

Hydrochloric Acid (HCI) 33%

20L

$66.00 AUD

Hydrochloric Acid (HCI) 33%

PROFESSIONAL USE ONLY

Hydrochloric Acid (HCI) 33%

Hydrochloric Acid 33% is a concentrated 20L acid solution designed for cleaning, etching and preparing concrete surfaces prior to sealing, coating or resurfacing. It helps remove efflorescence, cement residue, dirt and other surface contaminants to improve coating adhesion.

$66.00 AUD

Price Includes GST

In stock

TRADE & VOLUME PRICING - PHONE ORDERS ONLY

Trade and volume pricing is available by phone. For concreters, contractors, landscapers, builders and bulk orders with a valid ABN. Click to learn more >

• Active Ingredient: Hydrochloric Acid (HCl)
• Concentration: 33%
• Dilution Rate: Minimum 10 Parts Water to 1 Part Acid
• For Professional & Trade Use Only
• Incorrect Application May Cause Permanent Surface Damage to Concrete and Masonry Surfaces

Application

Dilute Hydrochloric Acid at a minimum ratio of 10 parts water to 1 part acid before use.

Always add acid to water, never water to acid.

Apply evenly to the surface using a suitable watering can, sprayer or acid-resistant applicator. Allow sufficient reaction time to etch the concrete surface before thoroughly rinsing with clean water.

Where required, scrub the surface with a stiff broom to assist in removing contaminants and ensure even etching.

Following application, thoroughly rinse and neutralise the surface to remove all acid residues. Allow the concrete to dry completely before applying any primer, sealer or coating.

Refer to the Technical Data Sheet (TDS) for detailed application instructions and dilution recommendations.

Safety Information

Wear acid-resistant gloves, eye protection and suitable protective clothing.
Use a chemical respirator suitable for acid vapours where ventilation is inadequate.
Use only in well-ventilated areas.
Avoid contact with skin, eyes and surrounding surfaces.
Always add acid to water, never water to acid.
Read the Technical Data Sheet (TDS) and Safety Data Sheet (SDS) before use.

Pickup & Delivery

Pickup is available by appointment only from our Pakenham warehouse.

For same-day collection, please contact our team before placing your order to confirm stock availability.

Orders are typically prepared within 24–48 hours. Once your order is ready, you will receive an email with collection details and pickup instructions.

Available Options

Local Warehouse Pickup
Private Courier Delivery (Additional Charges Apply)

If delivery is required, please contact our team before ordering to discuss available freight options and associated costs.

Decorative concrete coatings and resurfacing products for enhancing and protecting concrete surfaces

REMOVES SURFACE CONTAMINATION

Professional concrete sealers, coatings and surface treatment products for long lasting protection

ETCHES CONCRETE SURFACES

Certified quality concrete sealers, coatings and application products trusted by professionals

IMPROVES SEALER ADHESION

Concrete resurfacing, decorative coatings and surface preparation solutions for residential concrete

PREPARES FOR COATING

Concrete coatings, resurfacing products and decorative concrete solutions for residential projects

PROFESSIONAL GRADE PERFORMANCE

SUITABLE SURFACES

✓ Plain Concrete
✓ Previously Sealed Concrete
✓ Exposed Aggregate Concrete
✓ Concrete Driveways
✓ Garage Floors
✓ Pathways & Walkways
✓ Patios & Outdoor Concrete Areas
✓ Masonry Surfaces

KEY BENEFITS

• Suitable for Concrete Cleaning & Surface Preparation
• Removes Efflorescence & Mineral Deposits
• Assists in Concrete Etching Prior to Sealing
• Helps Remove Cement Residue & Surface Contaminants
• Concentrated 33% Hydrochloric Acid Formula
• Suitable for Residential & Commercial Concrete Applications

DOWNLOADS

⬇️ Technical Data Sheet (TDS)
⬇️ Safety Data Sheet (SDS)

Please refer to the Technical Data Sheet for complete application instructions and product specifications.

HOW MUCH SEALER DO I NEED?

To calculate how much sealer you'll need, measure the length and width of each concrete area and multiply them together.

Formula:
Length (m) × Width (m) = Total Area (m²)

Example:
Driveway: 10m long × 4m wide = 40m²

If your project has multiple sections, calculate each area separately and add them together.

Tips:

• Measure in metres for the most accurate result.

• Include driveways, paths, patios and pool surrounds.

• Round up your measurements if unsure.

• Our calculator includes an allowance for product absorption and application rates.

Take the Guesswork Out of Cleaning & Sealing and use our coverage calculator to estimate your sealer requirements in minutes and start your project knowing you've got the right amount of product.

Surface Area (m²)

Number of Coats

*Recommended for this product: 1 coat

CONCRETE SEALING & SEALER FAQ'S

Coverage rates vary depending on the product, surface type, porosity and number of coats applied. Use the coverage calculator above to estimate the amount of sealer required for your project. Porous surfaces typically require more product, while dense or previously sealed surfaces often achieve greater coverage. Always allow a small amount of extra product to ensure complete coverage.

Most concrete sealers achieve the best results with two coats. The first coat penetrates and bonds to the surface, while the second coat provides additional protection, durability and finish enhancement. Highly porous concrete may require additional product or coats to achieve the desired appearance and performance. Always refer to the product Technical Data Sheet (TDS) for specific application recommendations.

Yes. Many of our products are suitable for DIY application when used according to the manufacturer's instructions. Proper surface preparation, suitable weather conditions and correct application techniques are essential for achieving professional results. Always read the Technical Data Sheet (TDS) before commencing your project.

The surface should be clean, dry and free from dirt, grease, mould, algae, efflorescence and any existing failing coatings. Depending on the condition of the concrete, preparation may involve pressure cleaning, degreasing, acid etching, grinding, crack repairs or coating removal. Proper preparation is critical to achieving good adhesion and long-term sealer performance.

New concrete must be allowed to properly cure before sealing. The recommended curing period varies depending on the type of sealer being used and the manufacturer's recommendations. Before sealing, the surface should be clean, dry and free from curing compounds, laitance, construction debris and contaminants that may affect adhesion.

Some concrete surfaces may require acid etching, grinding or pressure cleaning to open the surface and promote sealer penetration. Always refer to the product Technical Data Sheet (TDS) for minimum curing times and preparation requirements before application.

Application over existing coatings depends on the type and condition of the original sealer. Some products are compatible with existing coatings, while others may cause adhesion issues, whitening, peeling or coating failure. If your concrete has previously been sealed, we recommend performing a compatibility test or contacting us for advice before application.

It depends on the porosity of the concrete and the weather conditions during application. For dense or less porous concrete surfaces, we generally recommend diluting the first coat with up to 30% xylene to improve penetration and adhesion. This helps the sealer soak into the surface rather than sitting on top, resulting in better bonding and long-term performance.

For highly porous concrete, dilution is often not required as the surface will readily absorb the sealer. Depending on the porosity of the concrete, additional coats may be required to achieve the desired finish and protection.

Always refer to the product Technical Data Sheet (TDS) for specific dilution recommendations.

Yes. Xylene is commonly used for cleaning rollers, brushes and equipment after applying solvent-based acrylic concrete sealers. It can also be used during maintenance and recoat applications to help soften and reactivate compatible solvent-based acrylic sealers.

However, xylene is a powerful solvent and can damage, soften or remove incompatible coatings, paints, plastics, rubber, asphalt and certain decorative finishes. Always test in an inconspicuous area before use and avoid contact with surfaces that may be affected by strong solvents.

Xylene should only be used with compatible solvent-based products and must be handled in accordance with the Safety Data Sheet (SDS). Always ensure adequate ventilation, wear appropriate PPE and follow all safety precautions during use.

Under normal weather conditions, most sealed surfaces can be walked on within 24 hours of the final coat. Drying times may vary depending on temperature, humidity, product type and ventilation. Refer to the product Technical Data Sheet (TDS) for specific drying and curing information.

For most concrete sealing applications, vehicle traffic should be kept off the surface for approximately 5 to 7 days after the final coat. This allows the sealer to properly cure and develop maximum durability. Premature vehicle traffic may damage the coating and affect the final finish.

Technical Data Sheets (TDS) and Safety Data Sheets (SDS) are available on each product page under the Downloads section. These documents contain important information regarding coverage rates, surface preparation, application methods, drying times, safety requirements and product limitations. We recommend reviewing the TDS and SDS before commencing any project.

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