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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Rainbow Chalk Markers Limited Grout Pen For restoring tile grout. Dark Grey 5mm wide nib

Product ID: 260360317

Details

Brand
Rainbow Chalk
Item dimensions L x W x H
18 x 18 x 140
Item weight
25 Grams
Material
Acrylic
Style
Compact

📏Covers up to 60 meters grout lines

🦠Anti-bacterial & anti-fungal formula

🖊️5mm reversible nib for precision

€ 33.05

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Description

✨ Restore, Protect, and Impress with Every Stroke! 🖊️

EFFORTLESS COVERAGE - Water-based formula covers up to 60 meters, perfect for large kitchen and bathroom projects.
SAFE ECO FRIENDLY - Non-toxic, water-resistant ink safe for enclosed spaces and all tile grout types.
TRANSFORM YOUR SPACE - Instantly refresh and customize grout color for a sleek, modern look that stands out.
PRECISION RESTORATION - 5mm bullet nib delivers flawless grout line coverage with controlled ink flow.
LONG LASTING PROTECTION - Anti-bacterial and anti-fungal agents actively prevent mold and mildew reappearance.

The Rainbow Chalk Markers Limited Grout Pen features a 5mm reversible nib and a water-based, non-toxic formula that covers up to 60 meters of grout lines. Its anti-bacterial and anti-fungal properties prevent mold regrowth, making it ideal for kitchen and bathroom tiles. Water-resistant and safe for enclosed areas, this grout pen offers a professional-grade solution to restore and customize grout with ease.

Specifications

ASIN	B0077LMF9Y
ASIN	B0077LMF9Y
Best Sellers Rank	#58,196 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #195 in Tile Grout #423 in Flooring Products
Brand Name	Rainbow Chalk Markers Limited
Color	Dark Grey
Compatible Material	Ceramic
Customer Reviews	4.2 4.2 out of 5 stars (3,878)
Customer reviews	4.2 4.2 out of 5 stars (3,878)
Date First Available	29 December 2013
Included Components	Grout Pen
Is Discontinued By Manufacturer	No
Item Dimensions	18 x 18 x 140 millimeters
Item Form	Pen
Item Type Name	Grout Paint Pen
Item Weight	25 Grams
Item model number	GP81116
Manufacturer	Rainbow Chalk Markers Ltd
Manufacturer	Rainbow Chalk Markers Ltd
Material Type	Acrylic
Model	GP81116
Number of Items	1
Part Number	GP81116
Product Dimensions	1.78 x 1.78 x 13.97 cm; 25 g
Style Name	Compact
Supported Standards	ASTM-D4236
Surface Recommendation	Tile
UPC	722480211164 072248021116
Unit Count	7 Milliliters
Water Resistance Level	Water Resistant

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€ 33.05

Duties & taxes included

In stock

Sold byAmazon CroatiaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Croatia.

Secure transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews

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Excellent communication throughout the order process. Product is perfect.

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