Natural Stone Sealers Compared: Dry-Treat, PCA & Chemforce

There’s a reason we love natural stone. The soft movement of travertine, the warmth of limestone and the character of sandstone bring a feeling to a home that’s hard to recreate. Once you’ve chosen your stone, the next step is protecting it.

At MDC Tiles, we supply sealers from Dry-Treat / STAIN-PROOF, Premium Coatings Australia (PCA) and Chemforce. Each range offers products for different jobs. Here’s how to narrow down the right option for your stone, your space and the finish you love.

Why does natural stone need sealing?

Natural stone has pores that can absorb liquids. In an unprotected surface, cooking oil, food spills and dirty water can leave marks that are difficult to remove. A suitable penetrating sealer reduces absorption, helping resist stains and making cleaning easier.

For most porous natural stone, sealing is a sensible part of the project from the beginning. The right treatment depends on the stone’s absorption, finish, location and any existing sealer. Very dense or previously treated surfaces need assessment before another product is applied.

• Everyday protection: choose protection against the spills your space will encounter.
• Easier care: reduce how readily liquids soak into the stone.
• Installation protection: a suitable pre-seal can help reduce grout staining.
• Specialist outdoor protection: some porous stone needs a system designed for water and salt exposure.

Sealing gives you more time to clean up a spill. It does not make stone maintenance-free, prevent scratches or stop acid etching on sensitive stone such as marble and limestone. It also does not replace wet-area waterproofing.

First, decide what you want the sealer to do

Keep the natural look? Look at a natural-look impregnating sealer. These treatments work within the pores rather than creating a visible surface coating.

Bring out richer colour? An enhancing sealer deepens tones and highlights variation. Test it on spare stone and let it cure before judging the result: the change can be difficult to reverse.

Protect pool coping or softer stone? Ask about a consolidator and water-repellent system. Consolidation helps bind a friable, or crumbly, surface. Oil-stain protection is a separate question.

Dry-Treat / STAIN-PROOF: natural-look protection and specialist stone treatments

Dry-Treat products are now marketed under the STAIN-PROOF name. Premium Impregnating Sealer is a starting point for natural-look oil and water stain protection on suitable indoor and outdoor surfaces. Think stone floors, bathrooms, patios and entertaining spaces.

For softer, porous stone exposed to saltwater, discuss 40SK Consolidator & Water Repellent. It has a different role from a general stain sealer, combining water repellence with consolidation. Confirm whether compatible additional oil protection is needed.

The wider range also includes Dense Stone Impregnating Sealer for dense natural stone benchtops and Color Enhancing Sealer for deeper colour.

Worth shortlisting when: you want natural-look stain protection, or need a specified system for porous stone in a demanding outdoor setting. Have the stone type and exposure checked before choosing between products.

Premium Coatings Australia: options across the installation and finishing stages

PCA offers a broad choice. PaveShield Pro Water Based provides natural-look oil and water repellence. SurfaceShield Pro Natural Look is a solvent-based alternative; its published suitability includes non-polished stone, so polished or low-porosity finishes need particular checking.

PreSeal is a water-based treatment aimed at water-borne contamination and installation protection, including approved dip-sealing before laying. Do not assume it supplies the same oil protection as a final stain sealer.

SurfaceShield Pro Wet Look enhances colour. Consolidate & Seal is a specialist option for suitable porous stone around pools and in coastal settings. PCA also offers surface coatings; a coating and a penetrating enhancer are different finishes.

Worth shortlisting when: you want a water-based natural-look option, are planning pre-installation protection, or need to compare natural and enhanced finishes within one range.

Chemforce: a focused choice for stains, richer colour and salt exposure

Chemforce’s three impregnating products make a useful starting shortlist. Stain Protector offers breathable oil and water repellence while retaining the stone’s natural appearance, for suitable indoor and outdoor areas.

Enhance+ deepens colour while providing oil and water repellence. Chemforce currently publishes a New Formula version: check the container and follow its matching instructions, especially when extending an older treatment.

Fortifier Plus targets water ingress and salt-related damage in suitable porous materials. It is the specialist product to discuss for saltwater surrounds; do not treat its water-repellent role as equivalent to oil-stain protection.

Worth shortlisting when: you want to choose by three clear jobs: natural-look stain resistance, colour enrichment, or specialist water and salt protection.

Compare the three brands by application

These are products to discuss with our team, subject to stone and finish compatibility. This is an application shortlist, rather than a performance ranking: manufacturer descriptions do not establish that one brand outperforms another.

Which should you choose for your space?

Kitchen, dining area or outdoor entertaining

Start with oil and water stain resistance, especially near cooking and food preparation. Compare the natural-look options above, then check stone compatibility, coverage, preparation and application requirements. For a dense stone benchtop, ask specifically about a product designed for that surface.

Bathroom floor or feature wall

Choose for the stone and finish, with a cleaner suited to both the stone and treatment. A sealer cannot correct poor drainage or replace waterproofing. Acid-sensitive stone still needs protection from acidic cleaners and toiletries.

Pool coping and coastal paving

Bring this conversation forward to before laying. Salt-exposed, porous stone may need a specialist treatment of multiple faces, with adhesive compatibility and curing time confirmed. Ask about 40SK, Consolidate & Seal or Fortifier Plus. Sealing cannot make an unsuitable stone suitable for every pool setting.

A patio where you want deeper colour

Compare cured samples of the enhancing options. Enriching colour does not necessarily mean a glossy coating, so show us the finish you have in mind. The stone must still be suitable for the location and required slip performance.

When should natural stone be sealed?

Plan sealing when you order the stone. Your installer may specify protection before laying or grouting, then completion of the sealing system once grout residue is removed and the installation is ready. Follow the chosen product’s instructions for coats, drying and curing: there is no single timetable across all three brands.

For a closer look at those stages, read our Natural Stone Sealer Buying Guide.

What to bring when choosing your sealer

• A stone sample or the exact stone name and finish.
• Photos and details of where it will be installed, including pool or coastal exposure.
• Your area measurements and installation schedule.
• Details of any existing treatment.
• Your preference for a natural or colour-enhanced finish.

Compare the cost of the complete treatment, including required coats, labour and preparation. Bottle price alone can be misleading because coverage changes with stone absorption. We stock selected products from these brands and can help order other options; please check availability and lead times before booking your work.

Your natural stone sealer questions answered

Is one brand best for every natural stone project?

No. All three offer useful options. The best fit comes from matching the individual product to your stone, exposure, finish and installation method.

Will sealing change the colour?

Enhancing products are intended to deepen it. Natural-look products aim to retain it, but always test first, including on pale stone where a subtle change may be noticeable.

Can I apply a different brand over an existing sealer?

Only after compatibility is confirmed. Tell us what was used previously, and test the proposed system before treating the whole area.

How often should stone be resealed?

There is no universal interval. Review performance according to the product guidance, traffic, weather and cleaning routine. Wipe spills promptly and use a stone-compatible maintenance cleaner.

Let’s protect the stone you love

Choosing natural stone should feel exciting, and we’re here to help with the practical details too. Visit MDC Tiles, your tile & surface design specialists, at our Miranda showroom. Bring your sample and project details so we can help narrow down a suitable sealer.

Still bringing your finishes together? Ask about our free interior design consultation and let’s create a space that feels right for your home and budget.

Product information: Dry-Treat / STAIN-PROOF, Premium Coatings Australia and Chemforce. Always follow the current product label and technical data sheet, complete a sample test and confirm the installation system with your installer.