Extreme Seal Indian Sandstone Sealer – Ultimate Protection 20.0 kg

Q: Will this sandstone sealer change the colour of my paving?

Yes—Matt finish sandstone sealer offers subtle enhancement, while Wet-Look patio sealer deepens the stone’s natural colour. Always test before use.

Q: Does this natural stone patio sealer leave a shiny finish?

Not a gloss. Matt stone sealer dries with a soft satin finish; Wet-Look sealer adds a light sheen without forming a film.

Q: Is this sandstone sealer slippery when wet?

The anti-slip stone sealer option includes silica additive for slip resistance on sloped patios, driveways, or pool surrounds.

Q: How long before I can park on a sealed stone driveway?

24 hours at 18 °C for full hardness. This driveway stone sealer cures faster in warm weather.

Q: Can I apply this stone sealer in cold conditions?

Only apply this outdoor stone sealer above 12 °C and during dry weather. Avoid rain or dew during curing.

Q: Will it prevent efflorescence on sandstone?

While this breathable sandstone sealer blocks water ingress, it won’t neutralize salts already in the stone. Use an efflorescence remover first.

Q: How often should I reapply this natural stone sealer?

Expect 4–5 years of protection on Indian sandstone. High-traffic areas or commercial patios may require reapplication every 3 years.

Q: Is this wet look sealer suitable for porcelain?

No—porcelain is non-porous. This penetrating stone sealer is only for absorbent surfaces like sandstone, limestone, and slate.

Q: Does the sealer allow the stone to breathe?

Yes. It’s a vapour-permeable stone sealer, which protects against freeze–thaw damage while allowing trapped moisture to escape.

Q: How do I clean overspray from the surrounding glass or metal?

Wipe fresh sealer immediately with white spirit. Dried residue from this acrylic/polyurethane stone sealer may need scraping.

Manufactured by Extreme Seal

Why Choose Our Products?

One-coat Indian sandstone sealer with optional second coat for deeper wet-look stone finish

Revives faded paving & highlights natural stone colour

Solvent-free low-odour eco-friendly natural stone patio sealer

Blocks oil grease & water; inhibits algae lichen & mould growth

Anti-slip silica option for safe stone sealer for slopes

Extreme Seal Indian Sandstone Sealer is a premium impregnating patio sealer formulated for sandstone, limestone, slate, granite, concrete, and other porous stone surfaces. The micro-pore-sealing polyurethane/acrylic blend penetrates deeply, forming an invisible yet breathable barrier that protects while enhancing natural stone colour.

Choose a matt-look stone sealer for a subtle satin finish or the wet-look stone sealer option to enrich tones. Add the silica sachet for natural stone anti-slip sealer without affecting clarity.

Apply with a brush, roller, or pump sprayer – the patio stone sealer is touch-dry in 2–4 hours, ready for foot traffic in 12 hours, and vehicle-ready in just 24 hours. Routine cleaning becomes simple - hose down to remove dirt and spills. Made in the UK, this solvent-free formula offers up to five years of stone protection.

Ideal Uses

Patio stone sealer for Indian sandstone, limestone, and slate patios
Driveways & courtyards
Outdoor kitchens & commercial plazas
Interior stone walls & hearth surrounds

Variants & Coverage

Size	Finish	Material	First Coat Coverage*
5 L, 10 L, 20 L	Matt Look • Wet Look • Anti-Slip	Natural & Porous Stone	≈ 20–25 m² (≈5 m²/L)

*Second coat provides
~30–35 m² per 5 L on typical stone porosity.

Finish & Colour

Leave a clear satin finish that enhances stone colour and leaves no surface film when used as directed.

Surface Preparation for stone – Pressure-wash or scrub with patio cleaner to remove dirt, algae, and efflorescence. Repairs/joints must be dry >48 h (<4% moisture).
Test patch – Always test in an inconspicuous area to confirm final appearance.
Mixing – Stir thoroughly. Add silica for anti-slip stone patio sealer.
First coat – Flood the surface with brush or roller until refusal; remove pools.
Curing window – Let dry 2–4 h until matte and non-sticky, then recoat for enhanced wet-look stone sealer effect.
Traffic & rain – Exclude rain for 6 h; pedestrian traffic after 12 h; vehicles after 24 h.
Pro tip: Decant into tray/sprayer to ensure even application.

Clean-up – Use warm, soapy water before cure; absorb spills with sand/vermiculite and dispose per regulations.

Property	Value
Components	1-part ready mix
Base	Acrylic/polyurethane hybrid, solvent-free
Finish options	Matt satin • Wet-Look satin • Textured (Anti-Slip)
Recommended coats	1 saturation coat; 2 for deep wet-look effect
Coverage	5–7 m²/L per coat
Wet film thickness	~100 µm (50 µm DFT)
Touch drying	2–4 h @ 18 °C
Recoat window	4 h
Light foot traffic	12 h

Property	Value
Vehicle traffic	24 h
Full cure	7 days
UV stability	100% UV-fast; non-yellowing
Breathability	Vapour-permeable
VOC	< 30 g/L (solvent-free)
Tools	Pump sprayer, silicone roller, brush
Clean-up	Warm soapy water
Shelf life	24 months (sealed, frost-free)
Interior/Exterior	Both
Primer required	None

COVERAGE CALCULATOR

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Frequently Asked Questions

Will this sandstone sealer change the colour of my paving?

Yes—Matt finish sandstone sealer offers subtle enhancement, while Wet-Look patio sealer deepens the stone’s natural colour. Always test before use.

Does this natural stone patio sealer leave a shiny finish?

Not a gloss. Matt stone sealer dries with a soft satin finish; Wet-Look sealer adds a light sheen without forming a film.

Is this sandstone sealer slippery when wet?

The anti-slip stone sealer option includes silica additive for slip resistance on sloped patios, driveways, or pool surrounds.

How long before I can park on a sealed stone driveway?

24 hours at 18 °C for full hardness. This driveway stone sealer cures faster in warm weather.

Can I apply this stone sealer in cold conditions?

Only apply this outdoor stone sealer above 12 °C and during dry weather. Avoid rain or dew during curing.

Will it prevent efflorescence on sandstone?

While this breathable sandstone sealer blocks water ingress, it won’t neutralize salts already in the stone. Use an efflorescence remover first.

How often should I reapply this natural stone sealer?

Expect 4–5 years of protection on Indian sandstone. High-traffic areas or commercial patios may require reapplication every 3 years.

Is this wet look sealer suitable for porcelain?

No—porcelain is non-porous. This penetrating stone sealer is only for absorbent surfaces like sandstone, limestone, and slate.

Does the sealer allow the stone to breathe?

Yes. It’s a vapour-permeable stone sealer, which protects against freeze–thaw damage while allowing trapped moisture to escape.

How do I clean overspray from the surrounding glass or metal?

Wipe fresh sealer immediately with white spirit. Dried residue from this acrylic/polyurethane stone sealer may need scraping.

Is the sealer safe for pets and garden plants?

Yes, once fully dry it’s non-toxic and safe for outdoor environments.

Can this stone sealer be tinted?

No, adding tints can interfere with penetration and clarity; it’s designed to be clear.

What type of sprayer works best for stone sealer?

Use a solvent-resistant low-pressure pump sprayer with a corrosion-resistant tip for even application.

Will hot BBQ grease stain a sealed patio?

The oil-resistant stone sealer makes wiping spills easy, though prompt cleaning is advised.

Can this be applied over an older stone sealer?

Yes, only if the original sealer is the same chemistry and fully intact. Otherwise, strip the old coating or allow it to weather naturally before applying a fresh layer.

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£94.99 (inc VAT)

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Size

20 Litres 10 Litres 5 Litres

Style

Matt look Wet look

Material

Normal Anti Slip

Product variants

*subject to stock levels at the time of your order.