What Is The Best Sealant For Stone Paving?
21st September 2026Natural stone paving is a real investment, and once it’s laid you’ll want it to look just as good in five years as it does today. Being outdoors, it faces rain, sun, algae and everyday spills, all of which can soak into the stone and spoil its appearance. Choosing the best sealant for stone paving is the simplest way to protect it. This guide explains what to look for, which sealant suits which paving and how much you’ll need.
- The best sealant for stone paving penetrates deep into the stone without changing its appearance
- For natural stone, Resiblock recommends Indian Sandstone Sealer, which protects for up to 5 years from one coat
- Sealants made for concrete, block paving or porcelain aren’t the right choice for natural stone
Why seal stone paving?
Natural stone is porous, which means water, oil and dirt can soak in rather than sitting on the surface. Left unsealed, stone paving is prone to algae and moss, staining from spills and car oil, and fading as strong sunlight dulls its rich natural tones. A good sealant forms a deep, protective barrier that keeps all of this out, so cleaning is quicker and the stone keeps its colour.
What makes the best sealant for stone paving?
When you’re comparing products, look for a sealant that offers:
- Deep penetration: it should soak into the porous stone to protect it from within, not just coat the surface.
- A finish you’re happy with: either fully invisible, or colour enhancing if you want richer tones.
- UV resistance: so the stone doesn’t fade in summer sun.
- Stain and algae resistance: protection against oil, drinks, dirt and green growth.
- Long-lasting protection: years of performance from a single application.
Match the sealant to your paving
Different paving materials need different sealants. Products designed for concrete or block paving work in a different way and aren’t the best choice for natural stone.
| Paving type | Recommended sealant |
|---|---|
| Natural stone (sandstone, Yorkstone, limestone, granite) | Indian Sandstone Sealer Invisible or Colour Enhancer |
| Porcelain | Porcelain and Vitrified Paving Sealer |
| Concrete flags and slabs | Resiblock Patioseal Environmental |
| Concrete and clay block paving | Resiblock Superior Matt |
The best sealant for natural stone paving
For natural stone, we recommend Resiblock Indian Sandstone Sealer Invisible. Its deep penetrating formula forms a transparent barrier against dirt, fluids and algae, it’s UV resistant and it lasts up to five years from a single coat. If you’d prefer to bring out the stone’s tones, the Colour Enhancer version offers the same protection with a richer finish. Our guide to the main uses of Indian sandstone sealer compares the two in more detail.
Indian Sandstone Sealer Invisible
- FinishInvisible
- CoatsOne
- Coverage4 to 6m² per litre
- Application temperature3°C to 30°C
- Rain-free periodAt least 8 hours
- Foot trafficAround 3 hours at 20°C
- ProtectionUp to 5 years
How much sealant will you need?
Each 5 litre container covers roughly 20 to 30m², depending on how porous your stone is. As a single coat product, there’s no need to double up.
| Paving area | Sealant needed | 5 litre containers |
|---|---|---|
| Up to 20m² | 3.5 to 5 litres | 1 |
| 30m² | 5 to 7.5 litres | 1 to 2 |
| 40m² | 7 to 10 litres | 2 |
| 60m² | 10 to 15 litres | 2 to 3 |
If your stone is very porous or you plan to test a small area first, allow a little extra.
Preparing your stone
Clean the stone thoroughly and let it dry out completely before sealing. If your paving has been sealed before, especially with a different brand, strip the old sealer first with Resiblock Paving Sealer Remover to avoid compatibility issues. Full instructions are in our application guidelines.
See the finish on your stone
Order samples to test Invisible and Colour Enhancer on your paving, or call our team on 01268 273344 for advice.
Stone Paving Sealant FAQs
What is the best sealant for stone paving?
The best sealant for natural stone paving is a deep penetrating stone sealer such as Resiblock Indian Sandstone Sealer.
It forms a barrier against water, oil, dirt and algae, resists UV fading and protects for up to 5 years from one coat. Choose the Invisible version to keep the stone’s natural look, or Colour Enhancer for richer tones.
Find out more about Resiblock Indian Sandstone Sealer Invisible or browse the Resiblock natural stone range.
Can I use the same sealant on all types of paving?
No, natural stone, porcelain, concrete and block paving each need a sealant designed for that material.
Natural stone needs a penetrating sealer, block paving needs one that binds jointing sand and porcelain needs a fine formula for its dense surface. Using the wrong product can give poor results or none at all.
Explore the Resiblock domestic sealers range, or contact Resiblock if you’re unsure which suits your paving.
How much sealant do I need for stone paving?
One litre of Resiblock Indian Sandstone Sealer covers around 4 to 6m², so a 5 litre container covers roughly 20 to 30m².
Coverage depends on the porosity of the stone, with more porous stone absorbing more product. As it’s a single coat sealer, you won’t need to double the amount.
See the Resiblock technical data sheets for full product details.
When should I seal stone paving?
Seal stone paving on a dry day between 3°C and 30°C, with no rain forecast for at least 8 hours.
The stone must be clean and completely dry before you start. Late spring to early autumn usually offers the most reliable conditions in the UK, so check the Met Office forecast before you begin.
Follow the Resiblock application guidelines for step by step instructions.
Do I need to remove old sealer before resealing?
Yes, if your stone has been sealed before, remove the old sealer first to avoid compatibility issues.
This is especially important if a different brand was used previously. Once stripped, pressure wash the area and allow the paving to dry completely before applying a new sealant.
Use Resiblock Paving Sealer Remover, which works on water-based, acrylic, polyurethane and urethane sealers.