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QUESTION
How do I change the Epoxy Grout color? - A contractor put epoxy grout on our slate tile patio in January. The grout color turned white. What is the best way to reapply to get the color desired? Can new epoxy grout be layered on top or is it best to remove the old epoxy grout first?ANSWER
ANSWER - The question is why the epoxy grout turned white? Sometimes if there is excessive moisture it can cause discoloration. If the epoxy is performing well other than it is the wrong color, then you can purchase epoxy grout colorants to change the grout color to the color of your choice. The epoxy grout has to be thoroughly cleaned and prepared for the grout colorant that has to be applied with an applicator or small paint brush.To apply new epoxy grout over it then at least 1/8" of the existing epoxy has to be removed to make room for it. You need to follow the instructions of the manufacturer of the products you are using. For a list of installation product manufacturers with links to their websites go to our website at www.CTaSC.com and go to Expert Answers for Resources and click on Installation Products. Good Luck
10 thoughts on “How do I change the Epoxy Grout color?”
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My contractor used an epoxy grout that is way to dark. What needs to be done to fix it so grout matches other grout?
There are epoxy based grout colorants that are meant to change the color of the grout to another color of grout that you prefer. They are commonly sold by the tile distributors or home centers. It is a tedious process to paint over as you have to apply painter’s masking tape both sides of the grout joint and apply the colorant over the existing grout that has been cleaned and is dry. You have to pull the masking tape right away so you have a nice clean transition.
Can I mix premade white epoxy resin grout with non sanded black grout and then apply , order to have darker grout lines? Thank you
There are modified epoxy grouts per ANSI A118.8. They use the part A & B liquids and add a cementitious grout that is normally a sanded grout. Most epoxy grouts have a part C aggregate that they add to the part A & B liquids. So your white epoxy might have a part C component that gives the epoxy that color, so you may need to substitute the white with the black aggregate.
So whether your non-sanded grout is compatible with the white epoxy or whether you will add it at the correct proportions would have to be verified with the manufacturer of the epoxy liquids.
Thank you Donato! Appreciate you replying.
I bought a product which has white premixed grout on bottom and the epoxy resin on top in separate plastic bag and the two are to be mixed.
My question is, since i need black grout for a tiny shower pan , can i just mix black sanded or non sanded black grout with some epoxy for this small job. So i dont have to buy black….have black powder grout and just mix with little epoxy that is separate from product i bought?
So, have epoxy by itself and want to add black to make black sanded or non sanded grout and mix. It should work. Correct? THANK YOU
I would never recommend not following the manufacturer’s directions or experimenting by adding another product to substitute a component of another manufacturer.
Although some manufacturer’s of modified epoxies do use their cementitious grouts as the color/aggregate with their epoxy liquids.
I suggest you check with the epoxy manufacturer.
Can coloured powder used to colour regular grout be used with epoxy grout?
There is modified epoxy grouts produced by some tile and stone installation produce manufacturers. Some like Laticrete has a produce called 210 Latapoxy where they say you can take their sanded grout and use it in lieu of the cementitous power that comes in the kit. This is chemistry so you have to make sure you are using the correct compatible products at the correct ratios.
I have mistakenly used an epoxy grout for my new back splash ( listened to the tile person where I bought the tile!) MISTAKE
it is now a shiny copper color (more like orange) Have called tiledoctor (EVO epoxy grout) speaking to their “expert” ! That guy couldn’t or wouldn’t tell me how to change the color! Can I use a black epoxy paint or ?
There are epoxy based grout colorants that can be purchased at a home center or from a tile distributor that can change any color to a different color.
Do do a good job takes a lot of care and experience. It is a tedious process where you apply blue masking tape along each side of the tile and carefully paint the grout colorant on it. If you get sloppy it will get on the edges of the tile and look irregular. Once you paint the joint pull the masking tape off away from the joint to get a clean joint. You will likely have to carefully remove some of the paint off the edge of the tile. It is important that you clean the grout joints thoroughly and let them dry before applying the grout colorant. Follow the manufacturer’s directions.