Can this be used over painted/sealed grout?

I used on sealed grout and it worked great

What is the difference in the pen sizes? Does one contain more product or does it have a bigger tip?

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.

What size room does one pen cover?

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.

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✨ Elevate your space with grout that speaks volumes 🖌️

EXTENDED COVERAGE - One pen covers up to 100 feet of grout, ideal for both small touch-ups and large DIY projects.
VERSATILE APPLICATION - Perfect for bathrooms, kitchens, floors, and ceilings—any tiled space gets a fresh upgrade.
PRECISION MEETS DURABILITY - Wide 15mm tip delivers smooth, consistent color that resists fading and water damage.
REVIVE YOUR TILES INSTANTLY - Transform dull grout into a sleek, modern finish with a single swipe.
SAFE ECO FRIENDLY FORMULA - Non-toxic, water-based ink ensures a clean, safe environment for your home and family.

The グラウトペンダークグレー is a 20ml water-based grout paint marker featuring a 15mm wide tip, designed to refresh and seal grout lines with a durable, non-toxic formula. Ideal for various tiled surfaces, it covers up to 100 feet of grout, providing a clean, modern look while being safe for indoor use.

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Yes, all products are sourced directly from authorized retailers in the US, UK, UAE and India. We maintain strict quality control processes and verify each product before shipping. All items come with applicable manufacturer warranties and are covered by our standard return policy.

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Our prices include the product cost, international shipping, import duties, customs clearance, and local delivery charges. We handle all customs and import procedures, ensuring there are no hidden fees upon delivery. PRO members receive additional benefits including free shipping.

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Trustpilot

TrustScore 4.5 | 7,300+ reviews

Khalid Z.

Great experience from order to delivery. Highly recommended!

1 week ago

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Excellent communication throughout the order process. Product is perfect.

2 weeks ago

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Brand	RAINBOW CHALK MARKERS LTD
Model Number	GP81216
Product Dimensions	3.18 x 3.18 x 15.88 cm; 79 g
Color	ダークグレー
Name List for Name Plates	モダン
Material	着色剤。
Quantity	1
Laser Class	非毒性。
Are Batteries Included	No
Item Weight	79 g

グラウトペンダークグレータイルペイントマーカー:防水タイルグラウト着色剤とシーラーペン - ダークグレー、ワイド15mmチップ(20ml)

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グラウトペン ダークグレー タイルペイントマーカー:防水タイルグラウト着色剤とシーラーペン - ダークグレー、ワイド15mmチップ(20ml)

Details

Description

Specifications

Have a Question? See What Others Asked

Common Questions

グラウトペンダークグレータイルペイントマーカー:防水タイルグラウト着色剤とシーラーペン - ダークグレー、ワイド15mmチップ(20ml)