What homeowners ask about Rob Parker’s Best Conclear

Rob Parker’s Best Conclear is a specialist stone consolidator formulated to strengthen natural stone from within. Unlike standard sealers that simply coat the surface, Conclear penetrates deep into the material, reinforcing its internal structure to restore stability and durability.

It’s designed to:

• Reinforce weathered or weakened paving
• Prevent further surface erosion or crumbling
• Extend the lifespan of softer or more porous stone

Conclear is particularly effective on paving that’s already showing signs of wear — such as surface flaking, a powdery residue, or a noticeably softer feel underfoot. It’s often applied before sealing to ensure the stone can withstand ongoing foot traffic, cleaning, and weather exposure.

While a sealer acts as the outer layer of protection, Conclear works beneath the surface — strengthening the stone’s foundation and helping prevent long-term deterioration.

It ultimately depends on the current condition of your stone.

If your paving is solid, intact, and free from visible decay, applying a patio sealer is usually sufficient. However, if the surface is already crumbling, chalky, or feels soft underfoot, it’s best to apply Conclear first to reinforce the stone — then seal it once the structure has been stabilised.

Conclear is particularly valuable before sealing when working with:

• Older paving showing surface deterioration
• Softer limestones and sandstones
• Fragile coping or pool surrounds

Sealing without strengthening first can trap existing weaknesses, causing bigger problems over time.

If you’re uncertain, take a look at our complete guide on using Conclear with natural stone paving.

When pavWhen stone starts to lose its strength, applying a sealer alone won’t solve the problem — and can even make it worse. Sealing weakened stone may trap moisture beneath the surface, leading to further flaking or erosion. Rob Parker’s Best Conclear works differently, penetrating deep into the stone to consolidate and stabilise it from within, stopping further decay before it progresses.

Use Conclear before cleaning or sealing if:

• The stone feels soft or crumbly underfoot
• Brushing produces a chalky or powdery residue
• The surface marks easily with light fingernail pressure

Once cured, Conclear strengthens the internal structure of the stone, leaving it solid, resilient, and ready for sealing, cleaning, or ongoing patio care.

No — Conclear isn’t a waterproofing treatment.

Its job is to reinforce the structure of the stone, not to repel water from the surface. It may slightly reduce absorption by tightening up the internal structure, but you’ll still need a proper sealer if you want to stop:

• Water soaking into the top
• Algae or moss forming in damp spots
• Staining from organic material

Once Conclear has cured, you can apply Rob Parker’s Best Invisible Sealer or Colour Enhancer for full surface protection.

Yes — if your stone is fragile or crumbling, Conclear should always go on first.

It needs to penetrate deep into the stone to be effective. If you seal first, you’ll block that absorption and prevent Conclear from working. Once cured, the surface will be ready for a protective sealer.

Steps:

1. Clean and dry the area
2. Apply Conclear to strengthen the stone
3. Wait 24–48 hours
4. Apply your sealer of choice

ConClear

If you have cement stains on your surfaces, don’t panic! Rob Parker’s Best ConClear removes cement stains & spills safely and easily.

1 litre: £15.40 + VAT

5 litres: £55.00 + VAT

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VAT is included in this price

Patio Sealer

Protects any porous or permeable surface by providing a protective repellent layer to stop staining from water or oil based dirt and other grime.

 

1 litre: £38.00 + VAT

5 litre: £175 + VAT

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VAT is included in this price

Colour Enhancing Sealer

Colour Enhancing Sealer specially formulated to prevent porous surfaces against staining from water/oil based dirt and other grime, whilst enhancing the surface colour of natural stone.

1 litre: £38 + VAT

5 litre: £175 + VAT

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VAT is included in this price

Yes — Rob Parker’s Best Conclear is completely safe for use around pool surrounds, garden steps, patios, paths, and driveways.

It’s especially useful for:

• Softer limestone copings
• Sandstone starting to weather near water features or pools
• Driveway paving that’s beginning to crumble or lose surface strength

However, it’s important to know what Conclear isn’t designed to do. It does not:

• Protect against pool chemicals or motor oil
• Add slip resistance
• Replace the need for a surface sealer

Conclear’s role is to reinforce the stone from within, restoring its structural integrity. For full, long-term protection against water, stains, and wear, it should always be followed by a suitable surface sealer.

A single application of Conclear usually provides protection for many years. Because it strengthens the stone from within, it won’t fade or wear off like a surface sealer can.

Reapplication is only needed if:

• The stone is highly porous and soaks up a lot during the first treatment
• New damage occurs, such as frost action or aggressive cleaning
• You’re treating repaired sections or isolated patches after several years

For most homeowners, one complete treatment is all that’s required — particularly if it’s followed up with a quality patio sealer to protect the surface.

After applying Conclear, it’s essential to allow enough curing time before moving on to sealing. As a rule of thumb, wait 24–48 hours so the product can fully absorb into the stone and reduce porosity.

In cooler or damp weather, drying may take longer, so patience is key. If the stone still appears dark or feels slightly damp, allow extra time. On warmer, dry days, the curing process will usually be quicker.

For highly porous stone, a second application may be worthwhile. Always let the first coat dry completely before applying another — typically after 48 hours.

During the curing stage, avoid walking on the paving or carrying out any heavy cleaning. Once the surface looks even and no longer feels tacky, it’s ready for sealing or for an additional coat if required.

Conclear is ideal for use on porous, natural stone that’s prone to surface wear. It’s especially effective on:

• Limestone
• Sandstone
• Travertine
• Soft marbles
• Other soft or flaky flagstones

Avoid using it on porcelain, granite, or engineered paving — these are too dense and don’t need internal consolidation.

If your paving absorbs water quickly, dusts when dry, or has an uneven surface texture, it’s likely a good match for Conclear.

Yes — Rob Parker’s Best Conclear is equally safe and effective for indoor use.

If you have original limestone or sandstone flooring, interior flagstones, or heritage stonework that’s beginning to feel dusty, soft, or worn, Conclear can strengthen it discreetly without altering its natural look.

It’s ideal for:

• Stone floors in hallways and kitchens
• Traditional or period home interiors
• Stair treads, thresholds, and entranceways

Conclear leaves no shine, residue, or colour change, making it perfect for preserving the authentic appearance of stone in listed properties or older homes where maintaining original character is essential.

After using Rob Parker’s Best ConClear, you’ll need to give it enough time to cure. Avoid walking on the paving for at least 24 hours in warm, dry conditions. In cooler or damp weather, allow up to 48 hours before returning furniture or bringing the patio back into full use.

Letting ConClear fully absorb and harden means the stone is properly consolidated. If the process is rushed, weaker spots can remain exposed, and the treatment won’t perform at its best.

Yes. Conclear can also be applied to porous natural stone walls that show signs of weathering or surface softening. It penetrates in the same way as it does on paving, helping to stabilise and reinforce the material.

When applying to vertical surfaces, work carefully to avoid runs. Always mask adjacent materials such as timber, glass or metalwork. Apply from the bottom upwards for best coverage, and allow the surface to fully dry before considering any sealing.

Buy ConClear

1 litre: £15.40 + VAT | 5 litres: £55.00 + VAT