Smartseal Grout Magic - White 237ml - Amazing Grout Restorer, Transform, Recolour and Seal Old Grout. Superior to Grout Pen. 15yr Lifespan (Please Follow ‘How To' Application Video)

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 appears like how it was immediately after application. The sealing property is as promised, the painted lines are indeed non-porus and completely stain free.

The product absolutely works and you can get a good finish, but how it comes out is completely down to your preparation, method, and how good the grout has been done in the first place.Firstly, you need to clean the grout thoroughly, if there's any grease on the kitchen grout or slime on the bathroom grout then it will not penetrate and will come off when you rub off the excess. As someone else in the reviews has said, a wire brush (I used a firm toothbrush) is a good idea, a scourer at least.Secondly, the instructions say that you can remove the excess immediately but I haven't found that to be the case. It needs a good 45 minutes to an hour to soak into the grout, and at least two coats.Lastly, and this likely only relates to darker colours; if your grout is poorly done (as mine was) then making the colour darker show up the poor workmanship. Excess grout on the tiles will show way more and uneven tiles will become more apparent. If you're doing white on white then you should be fine.A decent product, but needs to come with MUCH better instructions and support - a guide video would do the trick.

For our bathrooms all we required were 2 small 5 ml “sample” boxes. We applied this product to the grout using a very small artwork brush but, unavoidably, some of this paint goes on the tiles’ surface. If you wait 60 minutes to remove the excess paint from the tiles, as by the instructions, the paint has solidified, and the excess is extremely difficult to remove. As the grout is at a lower level than the tiles, I used a squeegee to remove most of the excess pain within 1-2 minutes and then rubbed carefully with a cloth if required.

It honestly does work! I had really old and dirty looking grout in the kitchen floor. All I needed was a cheap toothbrush to help me get the product on the grout and spread it evenly. Not a lot is needed so do not over do it as it needs a few hours to dry. Also you need a wet sponge that you can use to clean the excess and rinse after.See the photos for the before and after, I’m really happy now to see the result. I mopped the floor the next day and it won’t come off.I recommend hoovering and cleaning the surface and let it dry before applying the product !!

I bought this product as the grout is dark grey and it would have been perfect for the tiles in my bathroom.Unfortunately the product does not work and I am left with a very patchy grout within the various tiles (see photo). The pre-treatment which comes along with the Smartseal grout is amazing. It cleaned well the original white grout which had become yellowish with time, but the actual smartseal grout does not apply evenly. I am left with a mess and will have to remove it with an angle grinder. Would only recommend part of the product: the pre-treatment.

Easy to use, fresh new finish

Thr grout on our very old ceramic kitchen tiles really was looking awful.I have no idea what the iroginsl colour of grout was but I suspect white.First we cleaned the tiles and grout with the prep solutionThis needs 24 hours to dryThen we did 2 coats in the grout linesQuite fiddly2 hours drying between coatsSo you need 48 hours to do the job...possibly more if its a large kitchenWe are pleased with the results

Very disappointed. Was hoping to rejuvenate shower room tiles but found this to be no better than using a grout pen despite following all the instructions and using the pre treatment. It formed a plasticky layer and if you don't get it right into the grout you can just pull it off in a strip. Difficult to judge the right time to wipe off the tiles - too soon and the whole lot comes off including the grout, too late and requires a lot of elbow grease to remove from the tiles with a scourer. Gave up in the end and removed tiles and retiled the shower room.