GK Invisible Stone Sealer 3Ltr
GK Invisible Stone Sealer 3Ltr

GK Invisible Stone Sealer 3Ltr

£62.40 INC VAT
14 people are viewing this right now
  • Estimated Delivery:Apr 20 - Apr 24

  • Free Mainland UK Delivery : On Orders Over £100

Product Description

GK Invisible Stone Sealer is designed to penetrate, seal & protect natural stone & concrete paving.

Virtually invisible once applied, it allows the stone to "breathe" whilst protecting it from all manner of substances, such as cooking & engine oils, grease & fat, food, ketchup, mustard & beverages such as tea, coffee & wine. Ideal for protecting against the excesses of summer barbeques!

GK Invisible Stone Sealer has been developed using a short chain per-fluorinated polymer technology and is a major step forward in stone and concrete sealers. Suitable for internal and external use.

Providing a waterproof, breathable, transparent, durable seal which can be used on all natural stone including polished concrete and sensitive materials like honed granite and marble as well as block paving.



Always test a small hidden portion of the substrate before use, to ensure the result is satisfactory and to calculate consumption.

The surface should be clean, dry, and free from dirt, soiling mould and algae before applying. Treat any algae/mould and lichen using GK Pro, GK Fungicidal Solution or GK Greener Kleener.

The ideal application temperature should be between 10°c and 30°c.

Suitable for internal as well as external use, GK Invisible Stone Sealer is water-based so is highly environmentally friendly.



This product is ready to use - do not dilute. Shake the container before use. Always test a small hidden portion of the substrate before use, to ensure the result is satisfactory and to help calculate actual consumption.

  1. Ensure the surface is thoroughly dry and dust free before application.
  2. Apply a generous even coat with a brush, long pile roller or low-pressure spray to saturation point. One coat should be sufficient for surfaces with low porosity. Mop up any excess product during application to ensure Invisible Stone Sealer is applied evenly across the surface. Excessive product left on the surface will dry leaving a patchy or milky finish.
  3. For more porous surfaces apply a further coat once the first coat starts to soak in. The second coat MUST be applied ‘wet on wet’ DO NOT ALLOW the surface to dry in between coats. One to three applications are recommended. This method provides deeper penetration.
  4. Remove excess product with a clean microfibre cloth from the surface to avoid dirt pickup.



  • Penetrates and seals providing a high level of protection.
  • Allows the substrate to breathe.
  • Invisible once dry does not alter the appearance of the surface.
  • Excellent repellent of oil, grease, and water
  • Superb anti-stain properties with a strong resistance to dirt and grime
  • Restricts moss growth, algae and other natural contaminates.
  • Water-based formula ensuring safer to use whilst being hard wearing and long-lasting.
  • Environmentally friendly
  • 100% water-based - No toxic substances



  • Coverage(approx.): Up to 40m²
  • Natural stone varies in levels of porosity, on more porous stone the coverage may be less and more product will be required.
  • GK Invisible Stone Sealer is unable to work if applied over non-absorbent surfaces. Do not apply to non-porous materials. Do not apply to painted surfaces or those that have been previously treated with silicone sealants or other water-repellent material.
  • Do not apply if rain is expected within 4 hours or before the surface is completely dry.
  • Do not apply during rain or frost and when the surface air temperature is <5°c and > 30°c.



  • Surfaces should be maintained using our range of cleaning products, GK Pro, GK Greener Kleener or GK Concentrated Fungicidal Wash.
  • Dirt contamination should be removed immediately to prevent it from drying and becoming difficult to remove, especially on hot days.
  • Dark substrates get much hotter than lighter-coloured substrates. Any oil or grease stains
  • should be removed using GK Oil Out.



For Health & Safety instructions, first aid measures, spillages, and disposal instructions, see the separate Health & Safety Data Sheet (MSDS)

Key Features

• Invisible Shield: Virtually unseen once dry, the sealer creates a transparent yet durable shield.

• Breathable Protection: This product allows the substrate to breath, ensuring optimal air exchange while delivering a high level of penetration.

• Versatile Use: Suitable for internal and external applications, it provides a waterproof seal, making it ideal for a wide range of surfaces, including polished concrete, honed granite, marble, and block paving.

• Repellent Properties: Offers excellent repellence against oil, grease, and water, ensuring your surfaces remain pristine against common stains and spills.

• Anti-Stain Properties: Boasts superb anti-stain properties, maintaining resistance against dirt, grime, moss growth, algae, and other natural contaminants.

• Environmentally Friendly: Composed of a 100% water-based formula, GK Invisible Stone Sealer is environmentally friendly and devoid of toxic substances, ensuring safety during application.

• Extended Coverage: With an approximate coverage of up to 40m², it caters to various levels of porosity in natural stone, providing an effective and unseen layer of protection.

• Application Flexibility: Designed for ease of use, the sealer is applicable by brush, long pile roller, or low-pressure spray. Its water-based formula ensures it remains safe on delicate surfaces.

Application Guidelines

Preparation: Before applying GK Invisible Stone Sealer, conduct a small test on an inconspicuous area to ensure satisfactory results and calculate consumption. Ensure the surface is clean, dry, and free from dirt, mould, and algae. Treat any algae, mould, or lichen with GK Pro, GK Fungicidal Solution, or GK Greener Kleener. The recommended application temperature is between 10°C and 30°C. Suitable for both internal and external use, this water-based sealer is environmentally friendly.

Apply: Shake the container before use and conduct another small test for satisfactory results. Apply a generous, even coat with a brush, long-pile roller, or low-pressure spray until saturation. Mop up excess product to ensure an even application. For porous surfaces, apply additional coats while the previous coat is still wet, with one to three applications recommended for deeper penetration.

Finish: Remove excess product with a clean microfibre cloth to prevent dirt pickup.


Store in a well-ventilated place. Keep cool.

Technical Data Sheets

Product FAQs

How do you apply GK Invisible Stone Sealer

The easiest way is with a low pressure sprayer. You can also use roller, paint pad or brush if you prefer

Can I use this on my polished concrete kitchen floor

Yes it can be used on any natural stone including granite and marble, as well as concrete

Can I apply Invisible Stone Seal to a newly laid patio

Yes its a breathable impregnating sealer. The sealer will let moisture vapour travel up from the base, through the patio stone and allows it toevaporate from the surface while not permitting water ingress.

I need to remove some black spot and white lichens on my pavers before sealing, what do I use

Use GK Black Spot Remover prior to sealing

Can I apply Stone sealer all year round

No. The ideal weather application temperature should be from 10°c and up to 30°c

GK PRO WhatsApp Trade Forum

Join our group to get support and advice from hundreds of users.

GK PRO WhatsApp Trade Forum