What’s the Best Grout to Use in a Shower? A Contractor’s Advice
Showers are rough on grout. And it’s not just about splashing water — it’s the daily steam, humidity, and condensation. All that moisture can break down grout fast if you don’t use the right kind. So let’s talk about what works — and what to avoid.
When clients ask about the best grout for shower use, I always steer them toward materials that can handle constant exposure to moisture. Choosing the right grout isn’t just a detail — it determines whether your remodel lasts for years or needs rework in months.
💀 The Problem with Cement-Based Grout
Let me be blunt: cement-based grout does not belong in a shower. It’s porous — meaning it soaks up water. Even if you seal it (which many homeowners skip), it won’t stay protected forever. And once moisture gets in? You’re looking at issues like:
- Mold and mildew growth
- Cracking and shrinking over time
- Discoloration and stains
- Costly repairs or full regrouting later
Cement grout might be cheaper upfront, but the maintenance and repairs later cost you more. Especially in wet areas like showers or tub surrounds, the risk just isn’t worth it.
✅ Why Epoxy Grout Is the Best Choice
When I remodel a bathroom, especially a shower, I use epoxy grout. Period.
Here’s why epoxy grout wins every time:
- Waterproof: Epoxy doesn’t absorb water — so it won’t degrade, stain, or foster mold.
- Stain-resistant: You don’t have to worry about soap scum or discoloration.
- Crack-resistant: Unlike cement, epoxy has flexibility and won’t shrink or split over time.
- No sealing needed: Cement grout requires sealing every year or two. Epoxy? Never.
- Durability: Epoxy is so strong it’s used in pools, spas, and commercial kitchens.
Yes, epoxy grout costs more — and takes more skill to install. But if you want to do it once and do it right, it’s hands-down the best grout for your shower.
🛠️ Thinking of DIY? Here’s What to Know
Now, if you’re planning to DIY your bathroom, take this seriously:
Epoxy grout is not beginner-friendly.
You need to work fast. Once mixed, epoxy grout starts curing right away — and if you let haze dry on the tile, it’s almost impossible to remove without damaging the surface. It also requires proper tools, technique, and cleaning strategy as you go.
My advice?
- If you’ve never tiled before, don’t start with epoxy.
- If you do try it, read every instruction twice and be ready to move quickly.
- And if you’re unsure — hire a pro. Seriously.
💡 My Go-To Grout: SpectraLOCK Pro Premium
Over the years, I’ve tested just about every grout brand out there. For epoxy jobs, my go-to is SpectraLOCK Pro Premium Grout.
Here’s why I like it:
- It has great workability compared to other epoxies
- It’s highly stain-resistant
- It’s available in a wide range of colors
- It can be used on walls, floors, showers, pools — you name it
And no — I’m not paid to say that. It’s just a great product that holds up in Texas humidity and performs year after year.
🔧 Where Epoxy Grout Really Shines
We’ve installed epoxy grout on:
- Master showers
- Guest bathrooms
- Steam showers
- Outdoor kitchens
- Swimming pools
- Commercial kitchens
If a space is going to get wet often — or if it needs to stay easy to clean — epoxy is the way to go.
🚫 What About “Pre-Mixed Grout” or Additives?
There are a lot of products on the market today claiming to be “easy epoxy alternatives” — like single-component grouts or sealant additives for cement grout.
Here’s my take:
- Pre-mixed grouts often don’t perform as well long term — especially in soaking wet environments.
- Additives help a little, but they still rely on the base grout being cement — which is inherently flawed in wet spaces.
If you want true durability and waterproofing, stick with epoxy. No shortcuts.
📞 Ready to Remodel the Right Way?
At Premium Residential Remodeling, we specialize in bathroom remodels built to last. We don’t cut corners, and we don’t use cheap materials that fail in 2–3 years. Our standard is higher — and our clients thank us for it every time.
Need help designing a custom walk-in shower? Want to replace outdated tile and moldy grout with something clean, modern, and built for real life?
📍 Serving Conroe, Magnolia, Montgomery, Spring & Surrounding Areas
📞 Call today to schedule your bathroom consultation: (281) 789-7685
– Frank Puente
Certified General Contractor, NARI
Owner, Premium Residential Remodeling
