Epoxy grout vs cement grout - which should I use?
Short Answer
Two main grout options, and they perform very differently in wet areas.
CEMENT GROUT:
1. Made from cement, sand, water, pigment.
2. Affordable.
3. POROUS - absorbs water, can stain, can grow mildew.
4. Needs sealing after installation and re-sealing every 1-2 years.
5. Best for: dry living room / bedroom floors only.
EPOXY GROUT:
1. Made from epoxy resins and a hardener.
2. 2-3× more expensive than cement grout.
3. WATERPROOF - doesn't absorb water, stain, or grow mildew.
4. No sealing needed, lasts decades without yellowing.
5. Best for: bathroom floors and walls, kitchen backsplash and floor, balconies, outdoor, swimming pools.
Rule of thumb: cement grout in dry areas, epoxy grout in ALL wet areas. The cost difference is worth every rupee in wet zones - cement grout in a bathroom yellows within months and grows mildew within 2 years.
Trusted brands: MYK Laticrete (Spectralock), Roff Rainbow, Bostik, ARDEX.
CEMENT GROUT:
1. Made from cement, sand, water, pigment.
2. Affordable.
3. POROUS - absorbs water, can stain, can grow mildew.
4. Needs sealing after installation and re-sealing every 1-2 years.
5. Best for: dry living room / bedroom floors only.
EPOXY GROUT:
1. Made from epoxy resins and a hardener.
2. 2-3× more expensive than cement grout.
3. WATERPROOF - doesn't absorb water, stain, or grow mildew.
4. No sealing needed, lasts decades without yellowing.
5. Best for: bathroom floors and walls, kitchen backsplash and floor, balconies, outdoor, swimming pools.
Rule of thumb: cement grout in dry areas, epoxy grout in ALL wet areas. The cost difference is worth every rupee in wet zones - cement grout in a bathroom yellows within months and grows mildew within 2 years.
Trusted brands: MYK Laticrete (Spectralock), Roff Rainbow, Bostik, ARDEX.
Detailed Explanation
Grout choice is one of those decisions that quietly determines how a tile job looks 2-3 years later. Cement grout looks fine for the first few months in a bathroom, then quietly yellows, stains and grows mildew. Epoxy grout in the same bathroom still looks pristine 10 years later. The cost difference is real, but for wet areas it's one of the best small investments in the whole project.
CEMENT GROUT - the traditional default:
How it works: cement, fine sand, water and pigment mixed into a paste, troweled into the tile joints, smoothed, and left to cure for 24 hours.
Pros:
1. Affordable - typically Rs 200-400 per kg.
2. Easy for any tile fabricator to mix and apply.
3. Wide range of colour options.
4. Long history of use, well-understood.
Cons:
1. Porous - absorbs water like a sponge. In bathroom floors and kitchen back-splashes, this means stains, water marks, and slow yellowing.
2. Mildew growth - porous cement grout in damp areas is a perfect home for mildew. Bathroom grout typically grows visible black mildew within 1-2 years if not sealed.
3. Cracks - cement grout doesn't flex, so any slight substrate movement causes cracks at the grout joints.
4. Needs SEALING after installation and re-sealing every 1-2 years to slow water absorption.
5. Stains easily - coffee, oil, wine, turmeric all leave permanent marks if not wiped immediately.
When cement grout is fine:
1. Living room and bedroom floors (dry).
2. Dry feature walls indoors.
3. Tight budgets where the tile is not in a wet area.
EPOXY GROUT - the modern standard for wet areas:
How it works: epoxy resin and a hardener mixed together, troweled into the tile joints, smoothed, and left to cure for 24-48 hours. Sets to a hard, plastic-like consistency.
Pros:
1. WATERPROOF - does not absorb water at all. Water sits on top, doesn't seep in.
2. STAIN-RESISTANT - coffee, wine, oil, turmeric, soap residue all wipe clean.
3. DOES NOT GROW MILDEW - non-porous surface gives mildew nothing to grow on.
4. FLEXIBLE - handles slight substrate movement without cracking.
5. NO SEALING NEEDED - set and forget.
6. LASTS DECADES without yellowing or degrading.
7. CHEMICAL-RESISTANT - handles cleaning chemicals, mild acids, alkalis.
Cons:
1. 2-3× more expensive than cement grout (typically Rs 600-1500 per kg).
2. Harder to apply - sets fast, harder to clean off the tile face. Needs a more skilled fabricator.
3. Limited working time - once mixed, you have 30-60 minutes to apply before it starts setting.
4. Strong smell during application (use ventilation).
When epoxy grout is essential:
1. Bathroom floors and walls (ALWAYS).
2. Kitchen backsplash and floor.
3. Balcony, terrace, outdoor.
4. Swimming pool walls and surrounds.
5. Commercial / restaurant / café kitchens.
6. Any tile job near food prep or water.
Trusted brands in India:
1. MYK Laticrete Spectralock - one of the most-used premium epoxy grouts.
2. Roff Rainbow Tile Mate Epoxy - Pidilite brand, widely available.
3. Bostik - premium European epoxy grouts.
4. ARDEX - used in commercial projects.
5. Weber Joint Epoxy - Saint-Gobain.
The bottom line: cement grout is fine for dry living rooms and bedrooms. For ANY wet area, epoxy grout is essential - the cost difference (typically Rs 5,000-15,000 more per bathroom) is recovered in saved cleaning, no mildew, and never having to re-grout.
CEMENT GROUT - the traditional default:
How it works: cement, fine sand, water and pigment mixed into a paste, troweled into the tile joints, smoothed, and left to cure for 24 hours.
Pros:
1. Affordable - typically Rs 200-400 per kg.
2. Easy for any tile fabricator to mix and apply.
3. Wide range of colour options.
4. Long history of use, well-understood.
Cons:
1. Porous - absorbs water like a sponge. In bathroom floors and kitchen back-splashes, this means stains, water marks, and slow yellowing.
2. Mildew growth - porous cement grout in damp areas is a perfect home for mildew. Bathroom grout typically grows visible black mildew within 1-2 years if not sealed.
3. Cracks - cement grout doesn't flex, so any slight substrate movement causes cracks at the grout joints.
4. Needs SEALING after installation and re-sealing every 1-2 years to slow water absorption.
5. Stains easily - coffee, oil, wine, turmeric all leave permanent marks if not wiped immediately.
When cement grout is fine:
1. Living room and bedroom floors (dry).
2. Dry feature walls indoors.
3. Tight budgets where the tile is not in a wet area.
EPOXY GROUT - the modern standard for wet areas:
How it works: epoxy resin and a hardener mixed together, troweled into the tile joints, smoothed, and left to cure for 24-48 hours. Sets to a hard, plastic-like consistency.
Pros:
1. WATERPROOF - does not absorb water at all. Water sits on top, doesn't seep in.
2. STAIN-RESISTANT - coffee, wine, oil, turmeric, soap residue all wipe clean.
3. DOES NOT GROW MILDEW - non-porous surface gives mildew nothing to grow on.
4. FLEXIBLE - handles slight substrate movement without cracking.
5. NO SEALING NEEDED - set and forget.
6. LASTS DECADES without yellowing or degrading.
7. CHEMICAL-RESISTANT - handles cleaning chemicals, mild acids, alkalis.
Cons:
1. 2-3× more expensive than cement grout (typically Rs 600-1500 per kg).
2. Harder to apply - sets fast, harder to clean off the tile face. Needs a more skilled fabricator.
3. Limited working time - once mixed, you have 30-60 minutes to apply before it starts setting.
4. Strong smell during application (use ventilation).
When epoxy grout is essential:
1. Bathroom floors and walls (ALWAYS).
2. Kitchen backsplash and floor.
3. Balcony, terrace, outdoor.
4. Swimming pool walls and surrounds.
5. Commercial / restaurant / café kitchens.
6. Any tile job near food prep or water.
Trusted brands in India:
1. MYK Laticrete Spectralock - one of the most-used premium epoxy grouts.
2. Roff Rainbow Tile Mate Epoxy - Pidilite brand, widely available.
3. Bostik - premium European epoxy grouts.
4. ARDEX - used in commercial projects.
5. Weber Joint Epoxy - Saint-Gobain.
The bottom line: cement grout is fine for dry living rooms and bedrooms. For ANY wet area, epoxy grout is essential - the cost difference (typically Rs 5,000-15,000 more per bathroom) is recovered in saved cleaning, no mildew, and never having to re-grout.
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