---
product_id: 10800429
title: "Grout Pen Dark Grey Tile Grout Paint Marker: Waterproof Tile Grout Paint Pen Colorant, Grout Shine Touch Up & Renew for Cleaner Looking Grout Lines - Dark Grey, Wide 15mm Tip (20mL)"
brand: "rainbow chalk markers limited"
price: "€ 28.59"
currency: EUR
in_stock: true
category: "Rainbow Chalk Markers Limited"
url: https://www.desertcart.gr/products/10800429-grout-pen-dark-grey-tile-grout-paint-marker-waterproof-tile
store_origin: GR
region: Greece
---

# Waterproof, long-lasting ink Non-toxic, water-based formula 15mm wide tip for bold coverage Grout Pen Dark Grey Tile Grout Paint Marker: Waterproof Tile Grout Paint Pen Colorant, Grout Shine Touch Up & Renew for Cleaner Looking Grout Lines - Dark Grey, Wide 15mm Tip (20mL)

**Brand:** rainbow chalk markers limited
**Price:** € 28.59
**Availability:** ✅ In Stock

## Summary

> ✨ Refresh your tiles, reclaim your space! 🖌️

## Quick Answers

- **What is this?** Grout Pen Dark Grey Tile Grout Paint Marker: Waterproof Tile Grout Paint Pen Colorant, Grout Shine Touch Up & Renew for Cleaner Looking Grout Lines - Dark Grey, Wide 15mm Tip (20mL) by rainbow chalk markers limited
- **How much does it cost?** € 28.59 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/10800429-grout-pen-dark-grey-tile-grout-paint-marker-waterproof-tile)

## 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

- • **Safe & Eco-Friendly:** Non-toxic, water-based formula perfect for indoor use.
- • **Durable & Waterproof:** Ink resists water and wear, keeping grout looking pristine longer.
- • **Effortless Application:** Wide 15mm tip covers large grout areas quickly and evenly.
- • **Versatile Use Anywhere:** Ideal for bathroom, kitchen, patio, and all tile surfaces.
- • **Revive Your Grout Lines:** Transform dull grout into fresh, clean lines without scrubbing.

## Overview

The Grout Pen Dark Grey is a waterproof, non-toxic paint marker with a bold 15mm tip designed to renew and brighten grout lines up to 100 feet. Its advanced water-based formula ensures long-lasting coverage on unsealed grout, making it perfect for quick, professional-grade touch-ups in kitchens, bathrooms, and beyond.

## Description

desertcart.com: Grout Pen Dark Grey Tile Grout Paint Marker: Waterproof Tile Grout Paint Pen Colorant, Grout Shine Touch Up & Renew for Cleaner Looking Grout Lines - Dark Grey, Wide 15mm Tip (20mL) : Arts, Crafts & Sewing

## 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 | B007D0J0CY |
| Additional Features | GROUT PEN |
| Best Sellers Rank | #21,203 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #27 in Tile Grout |
| Body Shape | Round |
| Brand Name | Rainbow Chalk Markers Limited |
| Color | Dark Grey |
| Customer Reviews | 4.2 4.2 out of 5 stars (5,107) |
| Hand Orientation | Ambidextrous |
| Included Components | GROUT PEN |
| Ink Base | Water |
| Ink Color | Dark Grey |
| Is Waterproof | True |
| Item Dimensions | 1.25 x 1.25 x 6.25 inches |
| Item Type Name | Grout Paint Pen |
| Item Weight | 79 Grams |
| Line Size | 15 Millimeters |
| Manufacturer | Rainbow Chalk Markers Ltd |
| Manufacturer Part Number | GP81216 |
| Marker Type | Paint Marker |
| Material Type | Grout Paint |
| Model Number | GP81216 |
| Number of Items | 1 |
| Number of Pieces | 1 |
| Pattern | GROUT PEN |
| Point Type | Bold |
| Recommended Uses For Product | Tile Grout , Floor, Tub, Shower, Countertop, Backsplash, Sink, Wall, Patio |
| Style | Modern |
| Surface Recommendation | Tile , Floor, Tub, Shower, Countertop, Backsplash, Sink, Wall, Patio |
| Target Audience | Adult |
| UPC | 722480212161 |
| Unit Count | 1 Count |
| Water Resistance Level | Waterproof |
| Writing Instrument Form | Marker Pen |
| Writing Technique | Pumping action |

## Product Details

- **Brand:** Rainbow Chalk Markers Limited
- **Ink Color:** Dark Grey
- **Number of Items:** 1
- **Point Type:** Bold
- **Recommended Uses For Product:** Tile Grout , Floor, Tub, Shower, Countertop, Backsplash, Sink, Wall, Patio

## Images

![Grout Pen Dark Grey Tile Grout Paint Marker: Waterproof Tile Grout Paint Pen Colorant, Grout Shine Touch Up & Renew for Cleaner Looking Grout Lines - Dark Grey, Wide 15mm Tip (20mL) - Image 1](https://m.media-amazon.com/images/I/71F6uMyemxL.jpg)

## Available Options

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

## Questions & Answers

**Q: Can this be used over painted/sealed grout?**
A: I used on sealed grout and it worked great

**Q: What is the difference in the pen sizes? Does one contain more product or does it have a bigger tip?**
A: The Large Pen is 15mm wide (about the size of a typical Jumbo Marker).  The 5mm pen is about the size of a regular sharpie marker.

**Q: What size room does one pen cover?**
A: Good question.  The manufacturer states "up to 60 meters coverage for narrow grout joints".  60 meters is approximately 196 linear feet, however results vary as the porosity of grouts can very greatly.

**Q: Will this pen let me change the color of grout that is currently white but discolored? I want grey grout lines on my bathroom floor.**
A: Yes

## Frequently Bought Together

- Grout Pen Dark Grey Tile Grout Paint Marker: Waterproof Tile Grout Paint Pen Colorant, Grout Shine Touch Up & Renew - Dark Grey, Wide 15mm Tip (20mL)
- Grout Pen Dark Grey Tile Paint Marker: Waterproof Grout Paint, Tile Grout Colorant and Sealer Pen - Narrow 5mm, 2 Pack with Extra Tips (7mL) - Dark Grey
- Grout Pen White Tile Grout Paint Marker Replacement Tips: 5 Pack of Wide Tip 15mm Large - Waterproof Grout Paint Pen, Grout Colorant and Sealer Pen to Renew and Refresh Tile Grout

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**Shop now:** [https://www.desertcart.gr/products/10800429-grout-pen-dark-grey-tile-grout-paint-marker-waterproof-tile](https://www.desertcart.gr/products/10800429-grout-pen-dark-grey-tile-grout-paint-marker-waterproof-tile)

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*Product available on Desertcart Greece*
*Store origin: GR*
*Last updated: 2026-07-20*