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✨ Transform your grout game with precision & waterproof power! 🖌️
The Grout Pen Dark Grey features a narrow 5mm tip designed for precise application on unsealed grout lines. Its waterproof, water-based ink covers up to 150 feet of 2mm grout, delivering a durable, clean finish ideal for kitchens, bathrooms, patios, and more. With a replaceable cotton tip and easy activation, it’s the perfect tool for quick, professional grout restoration or color change.









































| Additional Features | GROUT PEN |
| Asin | B0077LMF9Y |
| Best Sellers Rank | #26,352 in Tools & Home Improvement (See Top 100 in Tools & Home Improvement) #32 in Tile Grout |
| Brand Name | Rainbow Chalk Markers Limited |
| Color | Dark Grey |
| Customer Reviews | 4.3 4.3 out of 5 stars (4,018) 4.3 out of 5 stars |
| Included Components | Grout Pen |
| Ink Base | Water |
| Ink Color | Dark Grey |
| Is Waterproof | TRUE |
| Item Diameter | 5 millimeters |
| Item Dimensions | 0.7 x 0.7 x 5.5 inches |
| Item Type Name | Grout Paint Pen |
| Item Weight | 27.22 g |
| Line Size | 5 |
| Manufacturer | Rainbow Chalk Markers Ltd |
| Manufacturer Part Number | GP81116 |
| Marker Type | Paint Marker |
| Material Type | Grout Paint |
| Model Number | GP81116 |
| Number Of Items | 1 |
| Number Of Pieces | 1 |
| Pattern | GROUT PEN |
| Point Type | 5mm |
| Recommended Uses For Product | Tile Grout |
| Style | Modern |
| Surface Recommendation | Tile , Floor, Tub, Shower, Countertop, Backsplash, Sink, Wall, Patio |
| Target Audience | Adult |
| Upc | 722480211164 072248021116 |
| Warranty Description | 100% satisfaction guaranteed |
| Water Resistance Level | Waterproof |
| Writing Instrument Form | Marker Pen |
| Writing Technique | Painting |
User
Awesome!
I just finished my grout coloring projects today. I must say that I am very pleased with the grout pen(dark gray) so far. I purchased three pens for my kitchen backsplash and a shower wall.One wall in my shower has a dark gray grout, which in spots was beginning to discolor. I scrubbed and scrubbed, however, I could not bring the color back. I used a dark gray grout pen and colored all of the grout on that shower wall and it turned out great. It was easy to use, clean up of any excess on the tile was simple and the color looks great. See photos.Next, my kitchen backsplash. The backsplash is made up of white subway tile with white grout. The only problem is that the white grout became very dingy and yellowish over time. I used the same dark gray grout pens for the backsplash and it turned out amazing. See photos.The grout pens last a long time in my opinion. I used maybe one and a half pens for both my kitchen backsplash and shower wall. I even double coated near the kitchen sink and behind the oven for extra protection.It took me about 8 hours to do the kitchen and shower wall. My recommendation to you would be to complete your task, allow the grout to dry for an hour or so and come back to wipe down the excess color off of the tiles. With a damp cloth, the excess color wipes right off of the tiles. With a non-porous tile, you don’t need to worry about coloring outside the lines. It will not stain. Don’t wipe down after every bit of color you get on the tile, it will add so much time to your job. Wait until you’re all finished, then clean.I used microfiber towels, bundled up and damp. I worked it in circle motions through the tile wall, trying not to apply to much pressure to the grout lines. When the grout color is fresh, some may wipe off if you apply too much pressure directly to the grout. This is why I recommend waiting an hour + before wiping down. Allow it to settle into the grout. I started wiping too quickly after application and had to add some color again.After you clean up the excess color off of the tiles, examine for any touch up areas. There will likely be a few.Some reviews addressed the pen tip breaking. I never experienced this. During the color process, keep a paper plate handy to dab and prime the color into the pen tip. Do this often and you won’t need to press hard while coloring. I could see it breaking if you go all King Kong on it.I can’t speak for the durability of the product yet, but as time goes on, I will update my review. I may add a spray on tile/grout seal after a few days to help protect the color as well.
User
Quick way to make grout look new again
Easy to use, covers well and quick drying. Only negative is it seems a little overpriced for the product
User
Not for use in wet areas
NOT FOR USE IN SHOWERSThis is a great product for floor or wall repair, but given it's water-soluble, it should not be used in wet areas.I used it on my bathroom floor and it worked great. It’s easy to apply. The one thing to be aware of it that you should have a dense sponge (like a “magic eraser”) and once you go over the line, pass over it again with the sponge to even it out. Looks great.I tried it in my shower, however, and it's terrible. It lasts a couple of days, then it starts to flake off. My grout has an interesting color - when it's dry it's almost white (and a perfect match to this gray), but when it gets wet, it turns dark gray (almost black), so, where the product flakes off, you see black portions of the grout coming through. It looks like mold! The treatment seems to last no more than a couple of days. I've tried re-treating it and then sealing it with a clear grout sealer, all to no avail.The product is just not strong enough for shower floor. As I said, the rest of the bathroom seems just fine, it's just the shower floor that seems to suffer.Upside is that it removes pretty easily - I took a nail brush and some alcohol and got most of it up.Now looking for a different solution.Pros:- easy to applyCons:- Flakes off if used in a showerRecommendation: OK to use in other parts of the bathroom or kitchen, but not where standing water will collect.
User
Makes grout look like new.
Speedy delivery. Works like a charm! My grout looks like new. Highly recommened
User
Quick, easy and cheap
Best and cheapest way to totally transform tile. I bought a table at a thrift shop with tile in the center. The grout wouldn’t come clean so I bought this to cover it. Took me a total of 20min to do two coats. It glides on so smooth and effortless. Dries super fast. I recommend having a piece of paper nearby to prime the pen occasionally to make sure it stays wet. Highly recommend this product!
User
Coverage estimate is way off.
The dark grey color is great and the results look perfect.Application is simple. It sticks to the grout and wipes easily off the face of the tile.However, in my experience the coverage is wildly inaccurate.My project had 37M of grout to cover. The pens state they have "Up to 60M coverage for narrow grout joints." One pen should easily do it right? Well, I bought 2 pens just to have a spare if needed later touch-ups.The first pen lasted 12.4M, and the second pen just 8.9M. My grout lines are between 1.5-3MM wide which seem to be fairly narrow. (The pen applicator is about 4.7MM wide) My grout is fairly smooth and didn't hardly require any second passes. (Until I was trying to milk the last bits out of the pens)I can't imagine under what conditions they got "up to 60M coverage". Being off by 80-85% from real world usage is pretty absurd. I'd much rather they give a range or average instead of the vague "up to".Now I must stare at my half finished project, waiting for the second batch of pens to be delivered.
User
Perfect grout paint
perfect painting of the grout in my shower. Easy to use, lasted a long time.
User
Defective after a few uses
The felt tip split apart on both of my markers making it almost impossible to continue with my project. I had to order a different product arriving tomorrow that hopefully does the job. Frustrating.
User
Utile
Fantastico veramente utile
User
Pronto arreglo
Indeleble
User
Amazing Transformation
These grout pens are great to use and really transform the appearance of tiles, whether brightening faded white grout, or changing the colour completely.You need to press the nib down to get the paint to flow, which you'll find yourself repeating frequently. Don't press too hard, as the nib eventually works its way inside the pen, so the less pressing the better.You can go at grout completely free hand, give it 5 mins or so to dry, then wipe over with a dry, preferably textured/micro-fiber cloth, to remove any excess on the tiles themselves. Don't worry, it comes off the tiles very easily.We used dark grey to make the 1/3 brick finish of our white tiles stand out, and we're really pleased with the results.I've bought another pen to keep as spare and use to touch up a few areas that were proving tricky to reach as the original pens ran out.The only down side is that painting the grout a darker colour shows you if/where it wasn't grouted very neatly to begin with!! I had to sand a few areas first to get the lines looking neat.
User
Facil
fácil de usar. Hasta el momento ha durado 6 meses.
User
Results of the dark gray
The pen works well The finish looks brilliant, but definitely no where near up to 60 linear metres like that say, I've not did a complete measure yea. I've got a much bigger project next to do will the light gray so I'll keep you up dated on that one. The big one will be how long will it last. Lastly for the coverage lve got so far l think it's a bit expensive,but l do recommend the rainbow grout pen every one got the own opinion.
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