Natural Stone Sealer: Invisible Stone Sealer for Patios, Driveways and Stone Floors
Using a stone sealer on your stone patios, driveways and floors is an important step in stone maintenance as it offers a protective, durable defence against stains from substances, oil and grease, as well as dirt and biological growth such as algae, mould and moss.
However, many stone sealers come at a cost. Most sealers will alter the appearance of your stone, possibly darkening the colour or adding a glossy sheen that is not always welcome, especially when you’ve paid for stone with a certain aesthetic like Indian stone or marble.
That is why we have created our Invisible Stone Sealer, designed to offer superior protection without changing the appearance of your stone and concrete surfaces.
Natural Stone Sealer That Preserves Your Stone’s Appearance
GK Invisible Stone Sealer is a professional-grade sealing solution that has been designed to penetrate, seal and protect all natural stone and concrete paving without altering the aesthetic of your stone surfaces.
Virtually invisible once applied, the formula allows your stone to ‘breathe’ whilst protecting it from all manner of substances including food and beverages, oils and grease. It also boasts excellent resistance against dirt, grime and biological contaminants such as moss, algae, mould and lichen.
GK Invisible Stone Sealer has been expertly developed using a short chain per-fluorinated polymer technology which represents a major step forward in stone and concrete sealers.
Composed of a 100% water-based formula, GK Invisible Stone Sealer is environmentally friendly and devoid of toxic substances, ensuring safety during application and suitability for both internal and external surfaces.
Invisible Stone Sealer for All Stone and Concrete Surfaces
GK Invisible Stone Sealer provides a waterproof, breathable, transparent and durable seal which can be used on all natural stone including polished concrete, as well as sensitive materials such as honed granite and marble.
This versatile stone sealer is also suitable for use on block paving, so can be used for driveways, protecting the surface from oil stains.
Product Characteristics and Benefits
- Penetrates and seals stone, providing a high level of protection.
- Allows the substrate to breathe.
- Invisible once dry and 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 ensures this product is safer to use whilst being hard wearing and long-lasting.
- Environmentally friendly alternative due to its water-based formula.
- Contains no toxic substances making it suitable for sensitive materials.
Key Features of GK Invisible Stone Sealer
Invisible Shield: This natural stone sealer is virtually invisible once dry, preserving the natural appearance of your stone. The sealer creates a transparent yet durable shield that protects your stone surfaces against all manner of staining.
Breathable Protection: This product allows the substrate to breathe, ensuring optimal air exchange while delivering a high level of penetration. The sealer will let moisture vapour travel up from the base, through the stone, and allow it to evaporate from the surface while not permitting water ingress.
Versatile Use: This product is 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: GK Invisible Stone Sealer offers excellent repellence against oil, grease, and water, ensuring your surfaces remain pristine against common, everyday stains and spills.
Anti-Stain Properties: The sealer boasts superb anti-stain properties, maintaining resistance against dirt, grime, moss growth, algae, and other natural contaminants that cause unattractive and unhealthy staining.
Environmentally Friendly: Our sealer is composed of a 100% water-based formula meaning 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. More porous surfaces may require additional layers during application.
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.
Removing Existing Stains and Biological Contaminants
To produce the best results and superior protection, GK Invisible Stone Sealer should be applied to a clean, dry stone surface. If there are already existing stains on the surface then these must be dealt with prior to sealer application.
How to Remove Biological Growth From Paths and Patios
GK Path & Patio Cleaner is a professional-grade, high-performance, long-lasting multi-purpose algae remover and cleaner, designed to tackle organic and microbiological soiling such as algae, lichen, mould, and bacteria.
Suitable for all external hard surfaces, it is ideal for maintaining the cleanliness and appearance of paths, patios, and other outdoor areas that are prone to algae growth.
The professional-grade algae remover formulation is free from solvents, bleach, and acids, making it a safer choice for both users and the environment. GK Path & Patio Cleaner does not alter the colour or finish of the treated surface, preserving the natural look of stone, concrete, and paving materials.
For severe staining, try GK Pro. GK Pro is a professional-grade solution primarily designed to combat moulds, algae, lichens, and various biofilms and has quickly become a favourite within the professional cleaning and maintenance sector, establishing itself as the preferred choice for tackling stubborn biological growth. It uses a natural surfactant cleaning action to achieve predictable results every time.
This powerhouse solution operates with precision, targeting living cells to serve as a highly effective sanitiser, eliminating 99.9% of bacterial matter. At the core of GK Pro's effectiveness lies its active ingredient, DDAC, ensuring residual activity that actively prevents premature regrowth.
How to Remove Biological Growth From Driveways
GK Driveway Cleaner is a professional grade, high-performance, long-lasting multi-purpose cleaner formulated to eliminate organic and microbiological soiling such as algae, lichen, mould, and bacteria from all types of external hard surfaces.
Free from solvents, bleach, and acids, GK Driveway Cleaner offers a safer alternative to harsher chemicals, ensuring it will not damage or discolour the treated surface.
Its gentle yet powerful action makes it suitable for regular maintenance without compromising the appearance or integrity of the substrate.
How to Remove Oil Stains From Patios and Driveways
GK Oil Out is a professional-grade, oil-ingesting formula for removing unsightly petroleum-based oil and grease stains from block paving and concrete. Excellent on porous surfaces, such as pavers, slabs, drives, pathways, and patios.
GK Oil Out is a super concentrated formula that pushes oil out from deep within the pores. It removes contamination without leaving a residue. Ideal for stubborn, hard-to-remove grease and oil stains.
Oil Out is easy to use on driveways, patios, natural stone (including marble), block paving, all concrete substrates and wood.
How to Apply GK Invisible Stone Sealer: The Complete Application Guide
The application process for our natural stone sealer is easy, but we do recommend following these steps carefully for the best results.
Surface Preparation
Before application, always test a small hidden portion of the substrate before use. This will ensure the end result is satisfactory and enables you to accurately 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 an appropriate biological cleaner such as GK Path & Patio Cleaner or GK Driveway Cleaner.
The ideal application temperature should be between 10°c and 30°c, and you should wait for there to be a zero forecast of rain to give the sealer time to set and bond.
Application Guidelines
This product is ready to use - do not dilute.
Shake the container before use.
- Ensure the surface is thoroughly dry and dust free before application.
- 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.
- 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 let the surface to dry in between coats. One to three applications are recommended as this method provides deeper penetration.
- Remove excess product with a clean microfibre cloth from the surface to avoid dirt pickup.
Specifications
- Coverage (approx): Up to 40m²
- Natural stone varies in levels of porosity, on more porous stone the coverage may be less, so 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.
Maintenance
- Surfaces should be maintained using our range of cleaning products, GK Pro, GK Path & Patio Cleaner, GK Driveway Cleaner 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.
Frequently Asked Questions (FAQs)
Here is a list of commonly asked questions about the product and natural stone sealers:
General Product Information
Q. What is GK Invisible Stone Sealer?
It is a professional-grade, water-based impregnating sealer designed to penetrate and protect natural stone and concrete. It creates a durable, waterproof shield that is virtually invisible, meaning it won't change the colour or texture of your stone.
Q. What surfaces can I use this sealer on?
It is suitable for a wide range of surfaces, including:
Natural Stone: Granite (honed), Marble, Sandstone, Limestone, Slate.
Concrete: Polished concrete floors and block paving.
Internal & External: Ideal for kitchen floors, bathrooms, patios, and driveways.
Q. Will it change the look of my stone?
No. This is an "invisible" sealer. It does not leave a glossy or "wet look" finish; it preserves the natural appearance of the substrate while providing deep-seated protection.
Application & Usage
Q. How do I apply the sealer?
The product is ready to use, do not dilute it. You can apply it using:
- A low-pressure sprayer (the easiest method).
- A long-pile roller.
- A paint pad or brush.
Q. How many coats are required?
Low Porosity Stone: One generous coat is usually sufficient.
High Porosity Stone: 2 to 3 coats may be required.
Important: Always apply multiple coats "wet-on-wet." Do not allow the first coat to dry before applying the next.
Q. Can I apply it to a newly laid patio?
Yes. Because it is a breathable sealer, it allows moisture vapour to escape from the base and through the stone while preventing liquid water from soaking in.
Q. What is the ideal temperature for application?
The surface and air temperature should be between 10°C and 30°C. Do not apply if rain is expected within 4 hours or if there is a risk of frost.
Protection & Maintenance
Q. What does the sealer protect against?
It offers excellent resistance to:
Oil & Grease: Cooking oils, engine oil, fat, and BBQ grease.
Food & Drink: Tea, coffee, wine, ketchup, and mustard.
Natural Contaminants: Restricts the growth of moss, algae, and lichens.
Q. How long will the protection last?
The sealer is hard-wearing and long-lasting; however, the exact lifespan depends on foot traffic and exposure to the elements. Surfaces should be maintained with pH-neutral or dedicated stone cleaners to ensure longevity.
Q. How do I clean the stone after it has been sealed?
For routine maintenance, use GK Path & Patio Cleaner or GK Driveway Cleaner. If you encounter stubborn oil stains, GK Oil Out is recommended to lift the grease without damaging the seal.
Technical & Safety
Q. What is the coverage rate?
One 3L container covers up to 40m². However, this varies depending on the porosity of the stone. Very absorbent stones (like some sandstones) will require more product.
Q. Is it environmentally friendly?
Yes. It is a 100% water-based formula, non-toxic, and free from harsh solvents, making it safer to use around gardens and interiors.
Q. Can I use this over a previous sealer?
No. This sealer must penetrate the stone to work. It should not be applied over non-absorbent surfaces, painted areas, or stone previously treated with silicone or other water-repellent coatings.
Protect Your Stone with the Perfect Natural Stone Sealer
GK Invisible Stone Sealer is a natural stone sealer that offers superior protection against staining and biological contaminants. The water-based formula provides an environmentally friendly alternative to conventional sealers.
GK Invisible Stone Sealer is a professional-grade, water-based impregnating sealer designed to protect all natural stone and concrete surfaces, such as patios, driveways, and floors, without altering their natural appearance.
It creates a virtually invisible, breathable, and durable shield that offers superior resistance to oil, grease, water, dirt, grime, and biological growth like moss and algae.
