SmartsealGrout Magic - Mid Grey 1 x 237ml - an Amazing Grout Restorer That Makes Old Grout Like New. Permanently Seals The Grout to Help Protect Against Mould, Mildew and staining for up to 15 Years

I used this to revive the very dirty grout on the floor tiles in the shower room. I used the pre treatment which cleaned it beautifully. I used a fine paintbrush to apply the paint and wiped the excess off as I went along as I was not sure how quickly it would dry. I used a sample pot and it was more than enough to cover in one coat (70x70in approx) However as the photo shows the light grey is much lighter than the tiles (more white than grey) I am going to order a sample of the mid grey and try a better match

My goal is to restore and change the existing blotchy stained pale cement grey grout so that the new grout lines would disappear into my dark grey tiles.Unfortunately, the DARK GREY is nowhere near the darkness shown in the colour chart, worst of all, the undertone is VERY BLUE. The manufacturer should address this and at least formulate a more neutral version considering it does not sell a wider grey palette selection. I can see that I am not the only user commenting on the overly blue undertone and the lack of darkness, so beware, get a sample and test before wasting time / effort doing the entire surface.Grey is actually not a fool proof palette to work with, the final result will end up looking incohesive if the undertone is combined incorrectly to compliment the rest of the interior decoration. My dark grey tiles have a very neutral undertone, and the DARK GREY with so much blue looked awful like a cheap paint job. If my tile undertone is on the warm side, then the DARK GREY would no doubt appear even more hideous when the entire surface is painted, this can actually be seen from a reviewer's photo showing MID GREY on warm tone tiles.To achieve the correct colour so that the new grout lines will disappear into my dark grey tiles, I had to add 40% black, which is 100g Dark Grey + 40g Black, measured precisely using a scale.As you can see from the 1st photo taken during the sample stage, my mixture has reduced the blue undertone significantly, darkened and restored the blotchy ageing grout while blending in reasonably well with the neutral dark grey tiles.According to my sample experiment, a single grout line of 1cm x 34cm requires approx 0.28g of Smartseal. Therefore, a total of 78 grout lines in 2 coats will require approximately 43.68g of Smartseal, of which is only a small amount but I still had to pay an extortion for a Dark Grey 237ml full bottle, plus 4 black sample pots.Based on water is the same in ml and gram, I presumed SMARTSEAL weighs more than water, therefore, each 5ml sample pot should provide at least 5g, so 4 pots would be at least 20g. However, I was very wrong unless each sample pot did not contain 5ml. I only manage to get 15-16g of black from 4 sample pots. But luckily, I only needed 16g of black to make a mixture enough to cover my kitchen floor. I mixed 40g Dark Grey + 16g Black to make 56g total. Surprisingly, at the end of the project, I’ve only used about 27g, not 43.68g as concluded from the experimental stage.The application was easy enough using a 2cm wide hard bristle flat angled decorator’s brush. The brush was charged with enough Smartseal for 1 grout line, then applied in a straight continuous motion with the bristles in the vertical position. I allowed it to soak in for about 5 minutes before wiping any excess off the tiles using a thin damp microfibre cloth.For now, I am very satisfied with the final result which can be seen in photo 2 & 3, but only time will tell about durability. I’ve chosen this relatively expensive product based on the claim that it is also a 'SEALER' which serves to make the grout NON porous and therefore, more resistant to stains, lets hope it will deliver. To prevent any gradual stripping of the 'SEALER' property, I have also changed my floor cleaner from a mild alkaline grease cutting formulation to a neutral ph cleaner, the type typically recommended for wooden floors.I did call Smartseal for some technical advice, but was very disappointed with the not so transparent response, and I was told to read the Amazon reviews. Sadly, this is now the new normal for manufacturers to dodge responsibilities in case something goes wrong.Jan 2023 UPDATE: After one year, my painted grout lines still appear like how it was immediately after application. The sealing property is as promised, the painted lines are indeed non-porus and completely stain free.

Had to apply two coatings to get the right finish, but really satisfied with the final results.I left the product for more than 30 minutes in the tile and it was a little tough to clear the product of the tile .

Bought a bottle of White Grout Magic and must say highly delighted with the results , brought my tiles up like new again. Don't know how good other colours would work but can only say was very impressed with finishI left the product on for a couple of hours before I wiped off excess as found it adhered better, that was the mess'iest part but can't fault product overall and did my whole kitchen of tiles

Good product, but no applicator or instructions with product. 🤔