The Complete Bathroom Tile Guide for Indian Homes
The wrong tile in a bathroom is an expensive mistake — not because of the tile cost, but because of the labour cost to remove and relay it. Get the specification right once.
Priya Krishnan
Lead Interior Designer · BayaNest
The tile you can live with for 20 years is usually not the tile that excited you most at the showroom.
The Slip Resistance Specification
Tile standards use the R rating system. R9 is dry areas only — living rooms, bedrooms. R10 is the minimum for bathroom floors. R11 is required for wet shower areas and commercial bathrooms. Most mid-range Indian tiles sold without an explicit R rating should be assumed to be R9. The consequence of under-specifying: falls, and a relaying job that costs more than the original installation.
Designer Tip
Ask your tile supplier for the R rating certificate. For shower floors, accept nothing below R11.
Understanding Tile Format and Wall Proportion
300×600mm is a dated proportion for bathroom walls. 600×1200mm large format tiles reduce grout lines, feel more contemporary, and are easier to clean. The constraint is the wall surface preparation: large format tiles require a flatter substrate with a maximum 3mm variation over 1800mm. This means additional skim plastering, which adds cost upfront but is worthwhile over a 15-year period for both aesthetics and maintenance. The number of grout lines in a bathroom is a direct multiplier of cleaning time.
The Grout Decision
Grout colour determines the visual rhythm of the tile layout. White grout with white tile is the most forgiving choice but shows staining fastest. Dark grout with light tile creates a graphic grid — best used with consistent, uniform tile colour. Epoxy grout costs 40–60% more than cement grout but is non-porous, stain-proof, and lasts significantly longer in wet areas. In a bathroom used daily for 15 years, the maintenance cost difference between cement and epoxy grout is substantial.
“ In a bathroom that will be used daily for 15 years, epoxy grout pays for itself in the first two years.”
Key Takeaways
- →Floor tiles must have a slip resistance rating of R10 minimum — R11 for wet shower floors
- →Water absorption below 0.5% (vitrified/porcelain) for all bathroom applications
- →Grout width of 2mm for rectified tiles, 3–4mm for non-rectified — never less
- →Large format tiles (600×1200 or above) need at minimum 80% bedding coverage to prevent hollow spots
Priya Krishnan
Lead Interior Designer · BayaNest
“Interior design that works requires understanding how people actually live. That's the only brief that matters.”