Sanded vs. Non-Sanded Grout: Key Differences
What are they?
Sanded grout (epoxy or cement-based): Contains fine sand particles—typically 1/8″ (3 mm) or larger aggregate. Non-sanded grout (a.k.a. unsanded): Smooth, cement-based mix without sand particles.
When to use each
Sanded grout is ideal for:
- Wide grout joints: 1/8″ (3 mm) or larger
- Floors or walls where tiles are thick or you expect load, expansion, or movement
- Ceramic, porcelain, terra cotta, slate, or granite tiles with larger joints
- Areas where the grout joints are subject to settling or movement (e.g., countertops with heavy use)
Non-sanded grout is ideal for:
- Narrow grout joints: 1/8″ (3 mm) or smaller
- Delicate or polished tiles with slick surfaces (glass, polished stone), where sand could scratch
- Vertical applications where you want a smoother finish
- Walls or backsplashes with small joints
Practical guidelines
Joint width:
Small joints (≤ 1/8″ or ≤ 3 mm): use non-sanded
Wide joints (> 1/8″ or > 3 mm): use sanded
Tile surface:
Glazed or polished tiles, non-sanded, are often preferred to avoid scratches
Rough or textured tiles: either can work, but sanded tiles provide strength for wider joints
Location and exposure:
Wet areas (shower, tub surrounds): both types exist in epoxy or cement-based forms; epoxy grout is more stain/chemical resistant
Outdoor or heavy-use areas: sanded is generally more durable for larger joints
Pros and cons
| Type | Pros | Cons | When to use |
|---|---|---|---|
| Sanded grout | Stronger for wide joints; less cracking; good for floors; economical for large joints | Can scratch polished or delicate tile; harder to clean tiny irregularities in very fine joints | Joints 1/8″ (3 mm) or wider; rough tiles; floors |
| Non-sanded grout | Smooth finish; safer for polished/delicate tiles; easier to pack into small joints | More prone to cracking in wider joints; can be slightly weaker in very wet, high-traffic areas | Joints ≤ 1/8″ (3 mm); polished or delicate tiles; vertical surfaces |
Epoxy vs. cement-based variants (optional note)
Epoxy grouts (often available in both sanded and unsanded forms): highly resistant to stains, chemical exposure, and water; more challenging to work with; typically more expensive.
Cement-based grouts (sanded or unsanded): easier to apply; cheaper; requires sealant in some porous tiles; more susceptible to staining over time.
How to choose for your project
- Measure joint width: determine if your joints are narrow or wide.
- Consider tile type: polished and glass tiles favor non-sanded; rough or textured tiles can accept sanded.
- Check movement expectations: floors and exterior walls with potential movement benefit from sanding.
- Wet areas: choose a grout with appropriate water/chemical resistance; epoxy variants are popular in showers.
- Aesthetics: non-sanded often provides a sleeker line on tiny joints; sanded provides more texture in larger joints.
Quick decision guide
- Joint ≤ 1/8″ (3 mm): Non-sanded grout (usually)
- Joint > 1/8″ (3 mm): Sanded grout (usually)
- Polished/glass tiles: avoid sanded if possible (use non-sanded)
- Floors/high-traffic or exterior: use sanded for durability
If you have any questions, please get in touch with us.