How to choose bathroom tiles that aren't slippery! R-values explained, and tips for choosing safe tiles for everyone at home
The bathroom is a space we use every day, but it's also where slips and falls happen most easily — especially in homes with elderly people or small children. Choosing non-slip bathroom tiles is therefore an important step not to overlook. Here are some tips for buying tiles that look good, are safe and last for years.
1. Know the R-value, the slip-resistance rating
When you shop for tiles, look for the R-Value (Slip Resistance Rating) rating printed on the box or in the catalogue — an international standard for testing how much grip a surface has:
- Dry zone (e.g. the washbasin area): tiles rated R9 - R10 are recommended; the surface isn't too rough and is easy to clean
- Wet zone (e.g. the shower area): choose tiles rated R10 - R11 or higher, because their rough texture adds excellent grip when wet
2. Tile types and sizes that affect safety
Besides the R-value, material and size also matter for slip resistance:
- Porcelain tiles: durable with very low water absorption, the best choice for bathrooms; choose a matte or textured finish
- Small tiles or mosaics: the grout lines between small tiles add grip underfoot, so you get better footing when walking
3. Checklist before you buy bathroom tiles
- Test by touch: drip some water on a sample in the showroom and run your palm over it to feel the grip
- Choose the right grout: use anti-mould, anti-algae grout to stop the floor becoming slippery from soap build-up
- Separate dry and wet zones: so they're easier to look after and you can choose the right tile for each area
Installation precautions
Even with the best non-slip tiles, laying bathroom tiles is skilled work, especially the waterproofing and getting the slope right so water flows easily into the drain without pooling — the main cause of slippery soap scum and algae. We recommend using a specialist tiler only, to prevent water leaking into the floor below and the structure of the house over the long term.