Blackstone Sealer & Restorer -1L Code; LTP/37/1

Used this product to darken and condition a black, limestone fireplace hearth with a roughened surface. Poured into a small paint tray and applied with a foam mini roller on the flats/ brush on the edges. The project took 5 coats in total but could have got away with 3. Allowed plenty of time to dry between coats. The sealer dried beautifully to a matt, coal black finish. Some residue left after drying which can be carefully wipped off with a semi damp cloth. Applied a No Nonsense Screwfix Sealer to lock colour in as a final coat. Very satisfied with the end result. Easy to use. Consistency of water - so use carefully with protection underneath.

Very messy and unforgiving if you don’t apply it carefully that said it does a great job, I blacked all my edging bricks around my patio and it looks brand new, I know it’s expensive but it does go a long way and seals the brick / stone perfectly

We had a discoloured black tile hearth. Used this restorer and after 2 coats it came up as good as new! Be warned, this is a black stain so mask off anywhere you don’t want blackened! The liquid is very thin so if poured on the surface it will rapidly run over the surface. If the tiles have a rough finish like ours make sure you use a lint free cloth (which will get ruined!) or a paint brush. Very pleased with the result and we still have 1/2 a bottle left for future use.

I don't normally leave a review on stuff but this deserved the time . Fed of my slate patio looking white and looked for something for years tried a number of different oils and other colour inhancers etc to be disappointed. This is abit like a paint but after letting seal for 24hrs then washing it down and sweeping it with a stiff broom lightly product is brillant . No more tired slate white tiles . And as others mentioned about the black residue it does go after its cleaned . FANTASTIC . little bit pricey for 1ltr bottle at £39.99 but it's good. personally £25 would be a suitable price . Thankyou would probably order again .

I previously wrote that this product was awful. However I have to tell you all that it was MY mistake! Having contacted the manufacturers (LTP) to complain, it was pointed out to me very nicely that this product was for EXTERNAL use and not for internal use! The moral of this story is READ the LABEL thoroughly before use. LTP are advising me now how to rectify the mistake to which I am very grateful.

I used this on slate slip tiles that were too light. But...be warned! I tested a few variations to get what worked for me. 1: Neat - 2 coats: Will turn your slate matt black. Like, chalkboard black. This would be cool for some but it just looked like the tiles were painted black and sucked all of the character away. No sign of black rub-off that been reported. You must let it dry. Maybe seal afterwards with LTP solvent sealer? 2: Neat - 1 coat: Similar to above but allowed some of the character through. Still way too black for this project. 3: *WINNER* Watered down - 1 part Blackstone to 4 parts water - followed by 2 coats of colour intensifier solvent sealer: This got me to where I wanted to be. The first coat of watered-down Blackstone took the pale and white parts of the slate away. Also went into the factory (and my) cuts, which are always hard to darken. The above (3) gave me a slightly darker grey which, when followed by 1-2 coats of LTP solvent colour intensifier, got me to a deep dark colour that still looks completely natural. If used neat it shouldn't give black rub-off (like reported), if left to dry. But if it does just seal it with a solvent sealer. I might be wrong...but I'd think of this Blackstone as a stain rather than a sealer. Water down to get your desired tone.

I’m really happy with the finish. I rescued some tiles from our old floor to make a hearth but they were a bit tired. This has brought them up really well and was very easy to apply.

I was a bit sceptical that this could bring my Indian limestone steps back to black. They has become a really light grey colour but this product is easy to apply and they now look new again. Took a few coats and the bottle doesn’t go far but overall a great product .