R10 vs R11 Tiles: How to Choose the Right Anti-Slip Level

2026-07-29 · ALISCAPE Technical Team

Understanding the R-rating

The R-rating (R9–R13) measures slip resistance using an inclined-plane ramp test with oil. The higher the number, the more grip the surface provides on wet, inclined floors.

It is a standardized way for specifiers to match a floor's safety to the environment it will serve — and increasingly a compliance requirement in public and wet areas.

R10: where it fits

R10 is the everyday workhorse for interiors that see occasional moisture: bathrooms, kitchens, laundries and entrance areas in homes and offices.

It provides a reassuring grip without a heavily textured feel, so it pairs well with barefoot and soft-sole traffic.

R11: where it fits

R11 steps up for regularly wet or barefoot-wet zones: pool surrounds, spa and sauna areas, commercial kitchens, and covered outdoor terraces.

The extra grip reduces risk where water is persistent, and it remains comfortable underfoot for standing and walking.

R10 vs R11 at a glance

Think of R10 as the standard safe choice for indoor wet rooms, and R11 as the upgraded choice for pools, spas and outdoor wet areas. The 'cost' is usually a slightly more structured surface — which modern anti-slip (dry-particle) finishes keep subtle and easy to clean.

How to choose for your project

Start from the worst-case condition: barefoot + water + slope pushes you toward R11 or higher. Indoor, occasional-moisture rooms are well served by R10.

Always pair the rating with the right tile body — ALIS CERAMIC anti-slip tiles use structured and dry-particle surfaces to reach R10/R11 while staying cleanable and good-looking.

R10 vs R11 Tiles: How to Choose the Right Anti-Slip Level — 1

Key Takeaways

•R-ratings (R9–R13) measure slip resistance on a wet ramp test.
•R10 suits indoor wet rooms; R11 suits pools, spas and outdoor wet areas.
•Higher ratings add grip, not ugliness — modern dry-particle finishes stay subtle.
•Match the rating to the worst-case condition of the space.

Frequently Asked Questions

Is R11 too rough for a home bathroom?

Not at all — many modern R11 tiles use fine dry-particle textures that feel smooth yet grip well. They are a good choice for family bathrooms and showers.

Do anti-slip tiles stain more easily?

Structured surfaces can trap a little more residue, but ALIS CERAMIC anti-slip tiles are designed to be cleaned with standard methods and resist staining thanks to their dense body.