What Kind of Grout Should I Use in My Shower? Epoxy vs. Cement, Explained

Most homeowners pick their tile carefully and treat grout as an afterthought — “it’s all basically the same, right?” Not quite. The grout you choose decides how much maintenance you’ll do for years and how long your shower keeps looking new. And it’s not a simple “sanded vs. epoxy” decision — there are really four kinds, each with a job it’s best at.

The four types of grout, quickly

Standard cement grout — the budget option. It works, but it’s porous: it absorbs water and stains and needs sealing once or twice a year to hold up. Best for dry, low-traffic areas.
High-performance “FA” cement grout (e.g., Mapei Ultracolor Plus FA) — a big upgrade. It resists staining and efflorescence (that chalky white haze), keeps a consistent color, usually needs no sealing, and still looks like natural grout. A great value on walls and drier floors.
Pre-mixed grout — ready to use, no mixing, no sealing. Convenient, but it can shrink and isn’t made for constantly-wet or submerged areas.
Epoxy grout (e.g., Laticrete SpectraLOCK, Mapei Kerapoxy) — the top tier. It’s non-porous, so it’s truly waterproof, stain-proof, and mold-resistant, never needs sealing, and holds its color for years.

So which one belongs in a shower? Epoxy.

A shower is the wettest, hardest-working surface in your home, and grout is the part that takes the abuse. That’s why we use epoxy in showers. Because it’s non-porous, water can’t soak into it, mold has nothing to grow in, and it keeps its color for the long haul without ever being sealed. It costs more and takes real skill to install correctly — the working time is short and the cleanup is unforgiving — but in a shower it pays for itself.

Here’s the most honest argument we can make for it: we have never had to go back for a grout repair on a job where we used epoxy. Cement grout, by contrast, is porous — it can discolor over time and is hard to color-match if a spot ever needs a repair. In a shower, that kind of durability is exactly what you’re paying for.

Where high-performance cement grout shines

FA-type cement grout is often the smart, better-value choice for backsplashes, walls, and dry-area floors. You get a natural look and real stain resistance with no sealing required, at a lower cost than epoxy — a great fit anywhere you don’t need epoxy’s full waterproof performance.

The honest trade-offs

Epoxy — best performance and lowest maintenance; highest cost; hardest to install (skill matters); holds color longest.
High-performance cement (FA) — great value and easier to install; but it discolors faster than epoxy and is hard to repair and color-match (it cures very hard and has to be cut out to regrout).
Standard cement — cheapest, but porous and needs regular sealing — budget and dry areas only.

How we help you choose

There’s no single “best” grout — there’s the right grout for each spot. For our Greenville custom showers we use epoxy; for backsplashes and drier areas, high-performance cement is often the better value; and we’ll use epoxy throughout when a homeowner wants the absolute lowest maintenance. Just as important as the choice is the install — epoxy in particular is only as good as the hands setting it.

Planning a shower or tile project in Greenville or the surrounding area? Call (864) 747-9325 for a free quote and we’ll help you pick the grout that fits your space and your maintenance comfort level.

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