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🔵 Transform your projects with the bold matte blue that means business
Rock N Soil’s Matte Blue Iron Oxide Powder is a premium 5 oz pigment designed for professional-grade coloring of cement, concrete, grout, plaster, epoxy resin, wood stains, and more. With ultra-fine 29 µm particles and water solubility, it disperses evenly to deliver rich, opaque matte blue tones that are durable indoors and out. Perfect for DIYers and pros alike, it offers customizable color intensity and blends seamlessly into a variety of materials for stunning, long-lasting results.















| ASIN | B0B82M7P5B |
| Best Sellers Rank | #6,356 in Arts, Crafts & Sewing ( See Top 100 in Arts, Crafts & Sewing ) #5 in Paint Making Materials |
| Brand | Rock N Soil |
| Brand Name | Rock N Soil |
| Color | Blue |
| Compatible Material | Wood |
| Customer Reviews | 4.5 out of 5 stars 412 Reviews |
| Item Form | Powder |
| Item Weight | 5 ounces |
| Manufacturer | Rock N Soil |
| Manufacturer Part Number | RNS-Blue-5oz |
| Model Number | RNS-Blue-5oz |
| Number of Items | 1 |
| Number of Packs | 1 |
| Unit Count | 5 Ounce |
D**.
Mix It, Pour It, and Watch Ordinary Gray Concrete Brighten Up!
We use this white titanium dioxide pigment for concrete projects here in Eastern North Carolina, and it does an excellent job of lightening the finished color. A little carefully measured pigment gave our concrete a cleaner, brighter appearance and made the completed pieces look much more polished and professional. The powder blended well when mixed thoroughly with the dry ingredients before adding water. It is especially useful for making concrete candle holders, decorative jars, planters, trays, stepping stones, ornaments, and other molded projects. It can also be combined with other concrete pigments to create softer pastel shades instead of the darker colors normally produced by gray cement. Do not expect ordinary gray concrete to instantly become snow white with one spoonful—the original cement color still matters. For the brightest result, use white cement, carefully measure the pigment, and maintain the same pigment-to-concrete and water ratios for every batch. Pro Tip: Wear a suitable dust mask and gloves, weigh the pigment instead of guessing, and thoroughly blend it into the dry cement before adding water. After the project has cured, apply an appropriate concrete sealer to help protect the lighter finish from moisture and stains. Thank you for providing a simple colorant that can transform plain concrete into something far more decorative. Five stars—because apparently concrete does not always have to dress like a gray parking lot!
L**E
Great
Just the right color
M**H
Gray Pigment
At first, I thought the pigment was too light in color. However, after mixing it with wet grout, it darkened and turned out perfect for my project. It seems the more you use the darker it gets.
T**L
Excellent brown pigment
Product came packaged in bag in a foil bag. No instructions but I figured it out with some Google help. It worked perfectly (turning white thinset into a nice dark brown). Will buy again when it's time for more repairs (this is setting stone into a waterfall + pond). One five pound bag of pigment was plenty/enough for a 50 lb bag of fortified thin set. Be careful, this stuff will dye anything it touches (clothes, gloves, tools, concrete floor, stone).
D**Y
Good product and price
Worked well to keep my concrete white, even though the media was beige.
V**O
Great for rocks,concrete, and other hard surfaces... bet you could do a mural on your pool deck ;)
I use these as base color for carved rocks.. I have many colors, they mix very well with non related materials,like Color Chrome powder, stone and tile sealant, sticking to the rock like superglue would... MY CARVINGS GLOW BEAUTIFULLY :) SO.... NOW I'M WONDERING,HOW WILL IT MIX WITH SUPERGLUE..... SCIENCE ROCKS ;) 2nd pic is several Chrome powders mixed with a bit of blue stain, it's the sky in the big 25lb rock
Y**D
Excelente
Amo hacer proyectos y utilizarlos garantizo que si color y duración es muy buena no cambia con la lluvia en exterior
J**.
Not that dark and hard to darken
Not very dark
Trustpilot
2 weeks ago
2 weeks ago