Premium Impregnating Sealer


Premium Impregnating Sealer is a powerful breathable impregnating sealer, suitable for limestone, sandstone, marble & other natural stone. This natural finish impregnating sealer can be used on internal and external surfaces.

This powerful impregnating sealer will not change the appearance of the surface it is applied to. The sealed surface will retain a natural unaltered appearance but is now resistant to water and oil-based staining.

Premium Impregnating Sealer is particularly effective when sealing dense surfaces like unglazed porcelain, polished marble, honed marble & honed or polished limestone. It can also be applied to other porous natural stone like sandstone and slate.

Please read the full instructions & related information contained within the Technical Data Sheet. If you require help choosing a sealer or cleaning product please feel free to contact us on (01484) 861461. You can email us at

View delivery charges & timescales

Directions of Use

  • Please read the Technical Data Sheet for full instructions.
  • Test in an inconspicuous area. If not suitable do not continue to use the product.
  • Make sure all surfaces are totally clean and completely dry.
  • Pre-clean interior floors with Floorseal Stone Floor Cleaner to remove dirt and grime.
  • Pre-clean exterior surfaces with Floorseal Sealer Residue remover if you have used a brush in compound.
  • For use on Internal floors turn off all underfloor heating systems and allow the floor to cool (allow approximately 12 hours).
  • Apply with a masonry type roller, paint pad or brush and allow to soak into the surface.
  • Remove all excess with dry (microfibre) cloths within approximately 10 – 20 minutes of application. You may need to remove the excess more quickly on less porous materials – particularly polished natural stone or porcelains.
  • Do not allow any excess to dry on the surface. Use microfibre cloths to ensure all excess product is removed.
  • Do not simply apply and leave to dry onto the surface all excess must be removed within 10 – 20 minutes of application.
  • On very porous materials apply the product again, approximately 40 minutes after the first application.
  • Remove the excess as before.
  • Do not apply the first & second applications on separate days, the first application will have already cured.
  • This product dries in approximately 2 hours and cures over 24 hours.
  • Do not allow the sealed surface to become wet during the curing process.
  • This product should only be applied when air temperatures are above 10ºC and below 20ºC.
  • Safe for children and pets when dry.
  • Do not apply to non-porous or glazed surfaces.

Product Details

100% breathable sealer for quality internal and external natural stone

Premium Impregnating Sealer is a fully breathable powerful impregnating sealer. This impregnating breathable sealer is suited to any application where, once sealed, the surface retains an unaltered natural appearance. This stone & tile sealer is suitable for sealing internal or external natural stone & tiles. This includes surfaces which may be dense, polished or finely honed. Premium Impregnating Sealer allows full moisture vapour transmission so is suitable for listed buildings. This effective sealer is perfect for any situation where the treated surface needs to resist water and oil-based staining. In addition to this Premium Impregnating Sealer does not alter the surface it is applied to. Sealing natural stone or tile resists water & oil-based staining and organic growth like algae. The sealed surface makes ongoing maintenance much easier. This sealer penetrates the surface of the stone or tile and becomes meshed into the pores. It will still allow 100% moisture vapour transmission. Suitable for Victorian geometric Minton tiles, including mosaics, quarry tile and Edwardian terrazzo floors. It will allow moisture transmission from lime based screeds and mortar. Premium Impregnating Sealer can be applied to both interior and exterior surfaces for maximum protection against staining. It is a powerful and versatile floor tile sealer and wall tile sealer. Suitable for use in kitchens, bathrooms, living areas and shower cubicles.

Premium Impregnating Sealer for tiles and the grout

This sealer can be used to seal both the face of the tile and associated grout lines. This includes lime based joints or modern sand and portland cement based pointing. Any porous tile can be sealed with this product, it is particularly useful when you wish to retain an unaltered appearance. The polymers which seal the tile penetrate the surface and become meshed into the pores, they do not create a surface sheen or shine. It is for this reason we describe the product as ‘matt finish’ – In actual fact, as with most impregnators, it has no visible finish due to it being a sub surface sealer. The sealer does not ‘wear’ like a surface sealer as there is no surface film to wear off. The product should be applied to a totally dry surface and allowed to penetrate into the pores of the tile. Make sure you wipe any excess from the surface before it dries. This product can be applied by roller, paint pad or brush in a single application or two consecutive applications (dependant on porosity). When sealing allow the product to soak in, then remove any obvious excess within approximately 10 – 20 minutes. Remove the excess with microfibre cloths, absorbing all excess sealant. This product will leave the treated surface with a breathable natural seal. It can be used on external and internal surfaces including wet rooms.

Please read the full instructions & related information contained within the Technical Data Sheet. If you require help choosing a sealer or cleaning product please feel free to contact us on (01484) 861461. You can email us at


Approximately 8m2 per litre for the first application & 16m2 for a 2nd application.

The individual level of porosity of each type of surface will dictate the overall coverage.

Delivery Charges & Timescale



UK Mainland Standard Delivery (4-5 days) Free
Express Delivery (1-2 days) £2.95 inc VAT
Scottish Highlands & Islands £9.60 inc VAT
Isle of Man £24.00 inc VAT
Isle of Wight £2.40 inc VAT
Northern Ireland £9.60 inc VAT

Delivery Charges & Timescale

  1. Shipping is based on a free standard delivery service to UK mainland addresses of 4-5 days.
  2. An alternative paid express delivery service of 1-2 days to UK mainland addresses is available.
  3. Our couriers do not deliver on a Saturday or Sunday (or bank holidays) other than by special additional arrangement.
  4. For the Highlands and Islands (including Northern Ireland) our standard shipping time may be slower than 4-5 days and is not free.
  5. An express shipping option to the Highlands & Islands & Northern Ireland is not available.
  6. Standard delivery is always free except to the Scottish Highlands & Islands, Northern Ireland & other UK offshore Islands.
  7. We do not dispatch orders on a Saturday or Sunday or bank holidays.
  8. We do not offer guaranteed shipping timescales.
  9. We do not deliver to the channel Islands, or Scilly Isles.

Safety Data Sheet

Technical Data Sheet

Blog articles & how to guides

For the latest blog articles and information for best user practice, click here.

Frequently Asked Questions

Which materials can I use this sealer on?

Polished marble, polished limestone, granite, semi vitrified or micro-porous porcelains.

Other dense surfaces or finely honed natural stone which requires a sealer with a ‘thin’ carrying agent to penetrate the surface of the stone.

Harder honed limestones may require a solvent based sealer, like Premium Impregnating Sealer, to penetrate the surface.

Is this sealer flammable?

No it is not flammable, it has a non-flammable carrying agent.

Can I seal grout with this sealer?

Yes it will seal both the grout line and any porous natural stone, clay-based material or concrete. It will also seal semi-porous porcelains.

Can I seal a porcelain with this sealer?

Yes, as long as the tile is micro-porous – sometimes referred to as semi-vitrified. In other words if the tile absorbs a liquid it can be sealed with an impregnator.

What finish does Premium Impregnating Sealer produce?

It is a penetrating sealer (know as an impregnator) so becomes meshed into the pores of the tile. It does not alter the appearance of the tile so is described as matt finish. It could be described as ‘no finish’ as the tile has not altered in appearance once sealed. The sealer acts as an invisible sealer to resist water & oil-based staining.

Is this an internal or external sealer?

It can be applied to external and internal tiles.

What does this tile sealer protect against?

Water & oil-based staining and inhibits organic growth on external surfaces.

This sealer is solvent based - is this advantageous over using a water based product?

Yes it is, particularly when sealing dense surfaces. Water based products can struggle to penetrate polished stone & micro-porous porcelains. Water based products are better suited to very open porous surfaces like sandstone.

Premium Impregnating Sealer is solvent based - does it have a strong odour?

No it is relatively low odour and non-flammable so fine for indoor use.

Can I use this product in a bathroom or wet room?

Yes, it is ideal for this situation as it is totally breathable, it will penetrate porous tiles and the associated grout lines.

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Additional information

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100ml Sample, 1 Litre, 5 Litre

Easy to apply

Our products are easy to apply using non specialist tools

Lasting Results

Full strength professional cleaning and sealing products


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Help and support with application methods and top tips!