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What is epoxy grout?

Epoxy grout fills the joints between tiles using epoxy resin and filler powder. The cured material is hard and durable, with strong stain resistance.

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By InstaBids editorial team with AI research agents. Updated

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Why is this type of grout not used all the time?

TCNA identifies appearance and handling as practical limitations of epoxy grout. It can have a plastic-looking finish, be difficult to shape and slope, and slump in a joint during early curing. These points explain why its stain resistance alone does not settle the choice for every tile project. “Also, it has a more plastic appearance which, as with all matters of aesthetics, some people like and some don’t.” Source: Tile Council of North America, read 2026-10-31.

What is epoxy grout made from?

Epoxy grout is a tile-joint filler made from epoxy resin and filler powder. TCNA describes the cured material as hard and durable, with strong stain resistance. Its discussion identifies epoxy grout meeting ANSI A118.3; the description does not mean every resin-containing grout has the same properties. “Made from epoxy resins and a filler powder, the grout is extremely hard, durable, and nearly stain proof.” Source: Tile Council of North America, read 2026-10-31.

Does Epoxy Grout Need Sealing?

TCNA excludes epoxy grout from its general recommendation to seal cementitious grout. That distinction matters when deciding whether a grout joint needs a penetrating sealer. The tile itself has separate care requirements: the same document says unglazed tile generally needs a sealer according to its manufacturer’s recommendations. “Generally, sealer is a very good idea for cementitious grout (regular grout – not epoxy grout).” Source: Tile Council of North America, read 2026-10-31.

What is causing my grout to have variations in color?

For epoxy grout, TCNA points to color uniformity as a reason the material is sometimes selected. Its color-variation FAQ discusses many causes of blotchy grout across grout types; it does not diagnose a particular epoxy installation from appearance alone. Its general caution is: “Uneven grout color is not normal, but there can be a number of things that can cause blotchy grout.” Source: Tile Council of North America, read 2026-10-31.

Is there a standard that addresses color variations in grout?

TCNA says there is no ANSI standard addressing variation in grout color. That is a narrower statement than saying epoxy grout has no material standard: the separate epoxy document identifies ANSI A118.3. A uniform appearance and conformance to a material standard therefore answer different questions. “There are no ANSI standards that address color variations in grout.” Source: Tile Council of North America, read 2026-10-31.

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