---
product_id: 50151372
title: "Grout Pen Light Grey Tile Paint Marker: Waterproof Grout Paint, Tile Grout Colorant and Sealer Pen - Light Grey, Wide 15mm Tip (20mL)"
brand: "rainbow chalk markers limited"
price: "€ 25.90"
currency: EUR
in_stock: true
reviews_count: 13
category: "Rainbow Chalk Markers Limited"
url: https://www.desertcart.gr/products/50151372-grout-pen-light-grey-tile-paint-marker-waterproof-grout-paint
store_origin: GR
region: Greece
---

# Waterproof on unsealed grout 15mm wide tip for fast coverage Covers up to 100 feet grout lines Grout Pen Light Grey Tile Paint Marker: Waterproof Grout Paint, Tile Grout Colorant and Sealer Pen - Light Grey, Wide 15mm Tip (20mL)

**Brand:** rainbow chalk markers limited
**Price:** € 25.90
**Availability:** ✅ In Stock

## Summary

> ✨ Refresh Your Tiles, Reclaim Your Space 🏡

## Quick Answers

- **What is this?** Grout Pen Light Grey Tile Paint Marker: Waterproof Grout Paint, Tile Grout Colorant and Sealer Pen - Light Grey, Wide 15mm Tip (20mL) by rainbow chalk markers limited
- **How much does it cost?** € 25.90 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.gr](https://www.desertcart.gr/products/50151372-grout-pen-light-grey-tile-paint-marker-waterproof-grout-paint)

## Best For

- rainbow chalk markers limited enthusiasts

## Why This Product

- Trusted rainbow chalk markers limited brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Instant Grout Revival:** Transform dull grout into fresh, bright lines without scrubbing.
- • **Effortless Application:** Wide 15mm tip covers large grout areas quickly for efficient DIY upgrades.
- • **Versatile Use Anywhere:** Perfect for kitchen, bathroom, patio, and any tile surface needing a clean upgrade.
- • **Durable Waterproof Formula:** Non-toxic, water-based ink resists moisture to keep grout looking new longer.
- • **Replaceable & Easy to Prime:** Removable cotton tip and quick activation pump keep your pen ready for flawless results.

## Overview

The Grout Pen Light Grey is a professional-grade, waterproof grout paint marker featuring a wide 15mm tip that covers up to 100 feet of unsealed grout lines. Its advanced non-toxic, water-based formula instantly brightens and recolors grout for a fresh, clean look across kitchens, bathrooms, patios, and more. Designed for easy use with a replaceable cotton tip and quick priming system, this pen delivers durable, vibrant results that resist moisture and wear.

## Description

GROUT PEN Make your Tile Grout look new again! Or change the color of your existing grout to a new and better color. Try a new grout color now. Our story began in 1994 when we first started developing our products. Our first product was the Liquid Chalk Marker which soon became a market leader due to the brilliant formula and ease of use. Our knowledge and passion for water & chalk based products began to expand, which led us to bring more fantastic DIY products to the market! GROUT PEN in White Visit the Store GROUT PEN in White Visit the Store GROUT PEN in Beige Visit the Store GROUT PEN in Beige GROUT PEN in Black Visit the Store GROUT PEN in Black GROUT PEN in Light Grey Visit the Store GROUT PEN in Light Grey GROUT PEN in Grey Visit the Store GROUT PEN in Grey GROUT PEN in Dark Grey Visit the Store GROUT PEN in Dark Grey GROUT PEN in Off-White (Ivory) Visit the Store GROUT PEN in Off-White (Ivory) GROUT PEN in Winter Grey Visit the Store GROUT PEN in Winter Grey GROUT PEN in Brown Visit the Store GROUT PEN in Brown GROUT PEN in Cream Visit the Store GROUT PEN in Cream GROUT PEN paint in a can! Save Money, GROUT PEN Can for large projects. Covers 1,500ft of 2mm grout lines. GROUT PEN paint in a can! Save Money, GROUT PEN Can for large projects. Covers 1,500ft of 2mm grout lines. 10+ Colors for Tile Grout Waterproof GROUT PEN White is the most popular of all grout tile colors. It's waterproof when applied directly to unsealed grout lines. Waterproof GROUT PEN White is the most popular of all grout tile colors. It's waterproof when applied directly to unsealed grout lines. The GROUT PEN I received has a dry white tip, is it broken or did I receive the wrong color? Tips need to be primed before use, all brand new GROUT PENS have a dry white tip until they are activated. The tip of my GROUT PEN fell out or is worn down, is my pen broken? Tips are designed to be removable so when a tip becomes worn or damaged it can be taken out and flipped over. If the tip falls out do not worry, simply put it back in and keep working. The color of the pen cap is not exactly the color I want The GROUT PEN color chart is the most exact representation of each color. The GROUT PEN I received has a dry white tip, is it broken or did I receive the wrong color? Tips need to be primed before use, all brand new GROUT PENS have a dry white tip until they are activated. The tip of my GROUT PEN fell out or is worn down, is my pen broken? Tips are designed to be removable so when a tip becomes worn or damaged it can be taken out and flipped over. If the tip falls out do not worry, simply put it back in and keep working. The color of the pen cap is not exactly the color I want The GROUT PEN color chart is the most exact representation of each color. GROUT PEN - Wide or Narrow All GROUT PEN are available in 2 sizes depending on the width of your grout line. GROUT PEN - Wide or Narrow All GROUT PEN are available in 2 sizes depending on the width of your grout line. Inside or Outside GROUT PEN's colorant is strong enough for exterior patio tile grout too. Inside or Outside GROUT PEN's colorant is strong enough for exterior patio tile grout too. Prime the Tip Tips need to be primed before use, all brand new GROUT PENS have a dry white tip until they are activated. Prime the Tip Replaceable Tips Tips are designed to be removable, a worn or damaged tip can be taken out and flipped over. Replaceable Tips Tips are designed to be removable, a worn or damaged tip can be taken out and flipped over.

Review: Dries quick - Super easy to use. Makes such a difference, brightens the room. So far I've bought 6 to do kitchen, dining, laundry, small hallway & a bathroom. Also bought the smaller pen head for another bathroom.
Review: Great grout cover - It covers well. Dries quickly. I am doing it in sections because the grout width is less than the extra wide (15mm) but more than the 7mm width. I have to clean the excess as I go. Because it dries quickly you need to clean the excess off the tiles right away. It is is slow going but the result is very nice. Seems to be durable so far.

## Features

- LOOK BRAND NEW: Skip scrubbing tiles and use GROUT PEN to paint and recolor your grout for a bright clean appearance
- USE ANYWHERE: Ideal for the bathroom, kitchen, and any other room that has floor or ceiling tiles
- LONG LASTING INK: Tackle small or large DIY projects with a pen that covers up to 100 feet of wide grout lines
- ADVANCED FORMULA: Non-toxic, water-based colorant that covers grubby grout stains making it look brand new again
- CAP COLOR: Use the color chart (see images) for most accurate color depiction. Pen cap represents each pen's color but is not expected to be the exact shade, do a small test area first
- USE ON UNSEALED GROUT ONLY: GROUT PEN may not bond to sealed grout. Test grout with a few drops of water. If the grout does not absorb the water within a minute this means the grout is likely sealed.
- TIP MAY WEAR DOWN: Tip is made of cotton, pressing too hard will damage tip. Contact seller for replacement tips if needed
- SHAKE ONLY WITH CAP ON: Tip is removable and may fall out if shaken hard, only shake pen with cap on (note - Pen does not need to be shaken at all, instead gently pump tip to activate)
- DRY TIP: Pen needs to be primed before use, all new GROUT PENs come with a dry white tip. To activate rapidly pump the tip (30+ times) until fully saturated

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B071LTCQJJ |
| Best Sellers Rank | #9,226 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #13 in Tile Grout |
| Brand | Rainbow Chalk Markers Limited |
| Brand Name | Rainbow Chalk Markers Limited |
| Color | Light Grey |
| Compatible Material | Grout (Unsealed) |
| Customer Reviews | 4.2 out of 5 stars 1,352 Reviews |
| Included Components | GROUT PEN |
| Item Dimensions | 1.25 x 1.25 x 6.25 inches |
| Item Form | Grout Paint Pen |
| Item Weight | 79 Grams |
| Item dimensions L x W x H | 1.25 x 1.25 x 6.25 inches |
| Manufacturer | Rainbow Chalk Markers Ltd |
| Material | Grout Paint |
| Material Type | Grout Paint |
| Model | GP81114S |
| Number of Items | 1 |
| Part Number | GP81208 |
| Style | Modern |
| Style Name | Modern |
| Supported Standards | ASTM-D4236 |
| Surface Recommendation | Tile , Floor, Tub, Shower, Countertop, Backsplash, Sink, Wall, Patio |
| Water Resistance Level | Waterproof |

## Product Details

- **Brand:** Rainbow Chalk Markers Limited
- **Item Weight:** 79 Grams
- **Item dimensions L x W x H:** 1.25 x 1.25 x 6.25 inches
- **Material:** Grout
- **Style:** Modern

## Images

![Grout Pen Light Grey Tile Paint Marker: Waterproof Grout Paint, Tile Grout Colorant and Sealer Pen - Light Grey, Wide 15mm Tip (20mL) - Image 1](https://m.media-amazon.com/images/I/71pQdA+E2EL.jpg)
![Grout Pen Light Grey Tile Paint Marker: Waterproof Grout Paint, Tile Grout Colorant and Sealer Pen - Light Grey, Wide 15mm Tip (20mL) - Image 2](https://m.media-amazon.com/images/I/716lql2SCuL.jpg)
![Grout Pen Light Grey Tile Paint Marker: Waterproof Grout Paint, Tile Grout Colorant and Sealer Pen - Light Grey, Wide 15mm Tip (20mL) - Image 3](https://m.media-amazon.com/images/I/71QC5fppUtL.jpg)
![Grout Pen Light Grey Tile Paint Marker: Waterproof Grout Paint, Tile Grout Colorant and Sealer Pen - Light Grey, Wide 15mm Tip (20mL) - Image 4](https://m.media-amazon.com/images/I/81OQpHHVl1L.jpg)
![Grout Pen Light Grey Tile Paint Marker: Waterproof Grout Paint, Tile Grout Colorant and Sealer Pen - Light Grey, Wide 15mm Tip (20mL) - Image 5](https://m.media-amazon.com/images/I/71X9GU3b+tL.jpg)

## Available Options

This product comes in different **Size** options.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Dries quick
*by V***N on March 6, 2026*

Super easy to use. Makes such a difference, brightens the room. So far I've bought 6 to do kitchen, dining, laundry, small hallway & a bathroom. Also bought the smaller pen head for another bathroom.

### ⭐⭐⭐⭐⭐ Great grout cover
*by P***H on October 18, 2025*

It covers well. Dries quickly. I am doing it in sections because the grout width is less than the extra wide (15mm) but more than the 7mm width. I have to clean the excess as I go. Because it dries quickly you need to clean the excess off the tiles right away. It is is slow going but the result is very nice. Seems to be durable so far.

### ⭐⭐⭐⭐ Helped make my old tile look new!
*by K***A on October 21, 2020*

So I ended up using 2 grout pens. This large light gray one and the small beige one. After my first cleaning of tile/grout and use of this pen I felt like the gray was too bright and it had a slight bluish hue. The last pic was the dirty tile I started with. The first pic is how it looked after I cleaned it and then used the light gray pen. The second and third pics are how it looked after I went back over the grout with the small beige pen. The two-toned contrast I ended up with is better than I could have imagined. I am very happy with the end result. My only complaint would be that the felt tips on these come out kind of easy. So you have to keep putting it back in. Other than that, i found them easy to use, long lasting, and well worth the affordable price.

## Frequently Bought Together

- Grout Pen Light Grey Tile Paint Marker: Waterproof Grout Paint, Tile Grout Colorant and Sealer Pen - Light Grey, Wide 15mm Tip (20mL)
- Grout Pen Light Grey Tile Paint Marker: Waterproof Grout Paint, Tile Grout Colorant and Sealer Pen - Narrow 5mm, 2 Pack with Extra Tips (7mL) - Light Grey
- Grout Pen White Tile Paint Marker: Waterproof Grout Paint, Tile Grout Colorant and Sealer Pen - White, Narrow 5mm Tip (7mL)

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*Product available on Desertcart Greece*
*Store origin: GR*
*Last updated: 2026-06-23*