Black Limestone Sealer - Re- Colours and Seals
Easy to Apply, Hardwearing Solvent-Based Sealer and Colourant





Smartseal black limestone sealer is a highly-effective solvent-based sealer and re-colourant for black limestone which gives a transformative effect.
Limestone slabs will often fade over time and gradually turn a lighter shade of grey. The black limestone sealer can transform the look of faded limestone patios and make them look like they were recently laid. The sealer can be re-applied at any time to ensure any limestone slabs on patios or other external surfaces look good at all times.
Preparation:
- Clean surface using a pressure washer and/or Patio Clean Xtreme.
- Allow to dry for a minimum of 72 hours
- Apply above 12°C with a temperature no higher than 23°C
- Two coats are recommended
- Apply by roller
- Coverage: Average coverage approx. 4 - 5m²/litre first coat (dependant on surface) and approx. 6 - 8m²/litre second coat
Always apply to a test area first to determine suitability. A sample size (150 ml) is available for purchase should you wish to try it before committing to purchase 5 Litres.
***PLEASE NOTE*** - For best results, if a sweep-in jointing compound has been used when the slabs were laid, we would recommend using the residue remover prior to application.
Q: Can this product be used on any natural stone? I have some black stone tiles in my shower which have been stained by cleaning products and I’ve been looking for something to bring them back to black again.
A: The Black Limestone Sealer is usually applied to natural stone surfaces such as limestone.
Q: Hi I've just completed the first coat using your black limestone sealer and I won't have enough to complete a second coat I already had some on order but it hasn't come as yet how long can I leave before applying second coat ?
A: You can apply another coat of the Black Limestone Sealer anytime after the first coat. However, the longer you leave it, the more likely it is to get a bit dusty or dirty. To avoid any application issues, make sure you sweep it or gently wash over it if left a for an extended period. Leaving it for a few days before applying a second coat should not be problematic.
Q: I have purchased black limestone sealant for my limestone coping. What is the recommended drying time before it rains..
A: It is best to apply the Black Limestone Sealer if no rain is forecast 6-8 hours after application.
We provide a national delivery service for our block paving sealer, pattern imprinted concrete sealer, roof coatings and tarmac restorer on a standard 2 - 4 working day basis. Dependent on weight, this is normally done by pallet or parcel carrier.
If you need products delivered quicker, for a small additional charge, orders placed before 1.30pm can be delivered within 1 - 2 working days to most parts of the UK, although this is dependent on the courier service in your area and the product/s ordered. If you require this service, please check on area availability by calling 01268 722500.
Our commitment is to supply all orders as placed and we offer a comprehensive guarantee of quality. Providing a reliable delivery service to all our customers is most important to us and this is backed up by the many satisfied customer testimonials we have received over the years.
If you need an order delivered to a different address, left somewhere at your property without a signature or left with a neighbour, just let us know.
We also try to maintain 100% stocking levels of our products at all times, so an immediate despatch is virtually guaranteed.
Our product returns policy can be viewed by visiting our Terms and Conditions section.
*Free delivery on orders over £75 are subject to the delivery address location.
Excellent Product, revitalised my faded black limestone flags. I would say they now look as good if not better than when they were first laid. Easy to apply, I used a 4" foam roller took me about 8 hours to treat 100sqm with two coats. Good coverage, would highly recommend.
Enlarged my patio so needed to seal the new black limestone slabs. Decided to cover the whole patio to ensure they all match. Very happy with the finished look. Bit of a pain having to wait the 72 hrs to dry the slabs for initial coat. However second coat can be applied far quicker. Essential to do two coats as first coat of sealer leaves roller marks.
I was very unsure what to buy and how to treat my black limestone slabs. After treating it last year with Re-Store they faded and stained very quickly leaving them looking very sad and uninteresting. SmartSeal Black Limestone Sealer really is a game changer!! 2 coats down and the place is looking MINT!! Well worth the money!! Thanks guys!!