--- product_id: 10800428 title: "Grout Pen Dark Grey Tile Grout Paint Marker Restorer - Narrow 5mm Tip (7mL) | Waterproof Grout Line Refresher for Kitchen & Bathroom, Colorant and Sealer Pens for Cleaner Looking Grout Lines - Dark Grey" brand: "rainbow chalk markers limited" price: "¥2972" currency: JPY in_stock: true category: "Rainbow Chalk Markers Limited" url: https://www.desertcart.jp/products/10800428-grout-pen-dark-grey-tile-grout-paint-marker-restorer-narrow store_origin: JP region: Japan --- # Water-based, non-toxic, waterproof ink Covers up to 150 feet of 2mm grout 5mm precision tip for narrow grout lines Grout Pen Dark Grey Tile Grout Paint Marker Restorer - Narrow 5mm Tip (7mL) | Waterproof Grout Line Refresher for Kitchen & Bathroom, Colorant and Sealer Pens for Cleaner Looking Grout Lines - Dark Grey **Brand:** rainbow chalk markers limited **Price:** ¥2972 **Availability:** ✅ In Stock ## Summary > ✨ Transform your grout, transform your space — because first impressions matter! 🖌️ ## Quick Answers - **What is this?** Grout Pen Dark Grey Tile Grout Paint Marker Restorer - Narrow 5mm Tip (7mL) | Waterproof Grout Line Refresher for Kitchen & Bathroom, Colorant and Sealer Pens for Cleaner Looking Grout Lines - Dark Grey by rainbow chalk markers limited - **How much does it cost?** ¥2972 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/10800428-grout-pen-dark-grey-tile-grout-paint-marker-restorer-narrow) ## 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 - • **Effortless Renewal:** Skip the scrubbing—instantly refresh grout color for a showroom-clean look. - • **Safe & Sustainable:** Non-toxic, water-based formula ensures eco-friendly, safe application indoors. - • **Precision Redefined:** Narrow 5mm tip delivers flawless grout line restoration with surgical accuracy. - • **Long-Lasting Coverage:** One pen covers up to 150 feet of grout, perfect for large DIY projects. - • **Versatile Application:** Ideal for kitchen, bathroom, backsplash, shower, and any tile surface. ## Overview The Grout Pen Dark Grey is a 7mL waterproof paint marker featuring a precise 5mm cotton tip designed to restore and recolor unsealed grout lines up to 150 feet. Its advanced, non-toxic, water-based ink provides a durable, easy-to-apply solution for kitchens, bathrooms, and tiled surfaces, delivering a fresh, clean appearance without the hassle of scrubbing. ## Description desertcart.com: Grout Pen Dark Grey Tile Grout Paint Marker Restorer - Narrow 5mm Tip (7mL) | Waterproof Grout Line Refresher for Kitchen & Bathroom, Colorant and Sealer Pens for Cleaner Looking Grout Lines - Dark Grey : 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 150 feet of thin 2mm grout - 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 | B0077LMF9Y | | Additional Features | GROUT PEN | | Best Sellers Rank | #29,403 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #39 in Tile Grout | | Brand Name | Rainbow Chalk Markers Limited | | Color | Dark Grey | | Customer Reviews | 4.3 4.3 out of 5 stars (4,027) | | 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 | ## Product Details - **Brand:** Rainbow Chalk Markers Limited - **Ink Color:** Dark Grey - **Number of Items:** 1 - **Point Type:** 5mm - **Recommended Uses For Product:** Tile Grout ## Images ![Grout Pen Dark Grey Tile Grout Paint Marker Restorer - Narrow 5mm Tip (7mL) | Waterproof Grout Line Refresher for Kitchen & Bathroom, Colorant and Sealer Pens for Cleaner Looking Grout Lines - Dark Grey - Image 1](https://m.media-amazon.com/images/I/71TEUe9rSEL.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, Narrow 5mm Tip (7mL) - Grout Pen Black Tile Paint Marker: Waterproof Grout Paint, Tile Grout Colorant and Sealer Pen - Black, Narrow 5mm Tip (7mL) --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.jp/products/10800428-grout-pen-dark-grey-tile-grout-paint-marker-restorer-narrow](https://www.desertcart.jp/products/10800428-grout-pen-dark-grey-tile-grout-paint-marker-restorer-narrow) --- *Product available on Desertcart Japan* *Store origin: JP* *Last updated: 2026-09-02*