Invisible Waterproof Agent 100g, Transparent Insulation Sealant, Clear Waterproof Coating Agent Anti-leakage Repair Spray Glue Grout Sealer for Outdoor Home Bathroom Roof Gutter

Bought this due to water leaks in the cracked grout between the ceramic tiles in my bathroom shower. Goes on very easily and turns hard and transparent after drying so you don’t even notice where it was painted on. It has completely sealed up the cracks and provided a waterproof protection. In fact, the wall on the other side of my shower is now drying out beautifully as the dampness was building up and paint was coming off, saving me hundreds in a new plastering job. Absolutely guarantee this product to anyone that needs this for sealing grout between ceramic tiles in bathrooms kitchens.

Was having issues with some old wooden windows which let water in when it rained and cold air in the winter, leaving the house feeling really cold and 'wet'. Can't afford to have them replaced yet and found this 'quick fix'. Wasn't convinced it would work but, wow! extremely impressed. Filled in all the gaps around the windows and immediately noticed the difference. It definitely feels 'less cold' and not a single drop of water has seeped through even though it rained really heavy. May not last long, but it certainly does the job in the short term. Will be purchasing again to seal over the tiles in the shower. I purchased the 300g pot which was a good size and managed to do all 12 windows (of average size) and the french doors. Pot contains a thick, creamy, white liquid. Goes on purple, but dries clear (love that as you can see exactly where you have brushed it and what you may have missed) Instructions are confusing, as it says 'spray', bit after a google search I found you just paint on and leave to dry - easy! Brush is 'tiny', but was useful for the small corners of my windows. Will use a larger brush for the shower. Easily washes off the brush with warm water.

I used this product on stone and glass tiles, when dry it was clear but gave a beautiful finish, a little goes a long way. Excellent product

Works ok. Need to apply several coats. I used on stone birdbath basin. Still loses water but at slower rate. Wouldn't order again for the cost ... not that impressed

I bought this to tackle a few problem areas around my home, like some fine cracks in my bathroom grout by the shower. Using it was surprisingly simple—application with the brush was quick and easy. It dried clear, which I loved because it didn’t change the look of anything I treated. The real test came when I ran the shower and I was thrilled to see everything held up perfectly—no leaks or water spots at all. This product definitely exceeded my expectations and is worth keeping on hand for future repairs.

Didn’t work for me. Left it 3 days to dry out. Tried fixing cracks in a birdbath but the water just ran through.

I am genuinely shocked it this. I used light grey grout on a kitchen floor which I was starting to regret (as it would hold all the dirt and look brown after a couple of mops), which would then need me to scrub back to grey with a brush and cleaner. I got EXTREMELY bored scrubbing the floor so I spent a day masking up and did all the grout lines with this. Honestly.. what a great product, I haven't scrubbed the floor once as the grout no longer absorbs water (I did 2 coats). 100% worth using

I have a very old summerhouse that I use as an art studio. It was leaking very badly but we mainly sorted that out in the spring. However there has been some seepage in very heavy rain. I used this and the seepage stopped immediately. There were other areas after more heavy rain so again I have used this product. It's easy to apply. Online instructions say use two or three coats which I have now done. Just waiting for more rain. I have every confidence that it will continue to work. A little goes a long way and it dries to a sheen which is only obvious when seen up close. I'm going to buy more to use on my velux windows.