kitchen

How to Tile a Kitchen Splashback: A Step-by-Step Guide

Gabriel

31 Oct 2025 — 3 min read

A kitchen splashback is one of the most rewarding tiling projects for a DIYer — the area is small and manageable, mistakes are contained, and the visual impact is significant. Done well, a tiled splashback looks professional and adds value; done poorly, it's a constant reminder of every shortcut taken. This guide covers the process from start to finish.

Planning and Tile Selection

For a standard single run of splashback (typically 600mm high between worktop and wall units), you'll need to calculate the area plus 10% wastage. For a 3m-wide kitchen, that's roughly 2m² — a very manageable quantity.

Popular choices for kitchen splashbacks in the UK:

Metro/subway tiles (75 × 150mm): Classic, suits period and contemporary kitchens. Available from B&Q from around £8–15/m², or premium versions from Topps Tiles at £25–50/m².
Large format tiles (300 × 600mm or 600 × 600mm): Fewer grout lines, easier to clean. Requires a very flat substrate.
Mosaic tiles: Pre-mounted on mesh backing — fast to lay but grout joints need careful attention.
Natural stone (marble, slate, travertine): Expensive and requires sealing, but looks exceptional. Must use appropriate flexible adhesive.

Tools Required

Tile cutter (a manual score-and-snap cutter handles straight cuts on ceramic tiles — hire or buy from £20)
Angle grinder with diamond disc or wet tile saw for curves and notches
Notched trowel (V-notch for standard tiles, square-notch for large format)
Spirit level and tile spacers
Grout float and sponges
Silicone gun

Preparing the Substrate

This is the step that determines whether your tiles stay up. Painted walls need their gloss keyed with 80-grit sandpaper — smooth paint provides very little grip for adhesive. Existing tiles can be tiled over if they're firmly bonded, but add 6–10mm to your finished surface height, which affects socket depths and unit clearances.

Plasterboard: perfectly adequate for a splashback, but use a flexible wall tile adhesive rather than a standard sand-cement mix. If the plasterboard is new or unprimed, seal it first with diluted PVA (1:4 ratio) to reduce suction. Standard plaster walls: check for any loose sections (tap to detect hollow areas) and repair before tiling.

Setting Out

Before applying any adhesive, set out your tile positions dry to check the layout. Aim to have any cut tiles at the edges and in less prominent positions. For metro tiles, decide on the layout pattern — brick bond (offset half a tile per row) or stacked (joints aligned vertically).

Find the centre of the splashback area and work from the centre outward. This ensures equal cuts on both sides. Mark a vertical line at the centre with a spirit level.

Applying Adhesive and Laying Tiles

Use a ready-mixed wall tile adhesive for simplicity, or powder-mixed rapid-set adhesive for speed (sets in 2–3 hours rather than 24). Apply to the wall with the smooth face of the notched trowel, then comb with the notched face to create ridges — the ridges compress flat when the tile is pressed in, ensuring full contact.

Begin at the worktop edge — any cut tiles at the top are less visible.
Press each tile firmly with a slight twisting motion to collapse the adhesive ridges.
Use a spirit level every 3–4 tiles to check vertical and horizontal alignment.
Insert spacers as you go — 1.5mm for standard metro tiles, 2mm for larger tiles.
For cuts at sockets and switches: turn off the power at the consumer unit. Remove socket faceplates, tile behind them, refit with appropriate spacer frames if needed to accommodate the added tile thickness.

Cutting Tiles

Straight cuts: score firmly along a metal rule with a tile cutter, then snap over a pencil or edge. Curved cuts and notches: use an angle grinder with a diamond disc or a tile nipper for small notches. Wet saw: more accurate for large format tiles and provides a cleaner edge.

Always measure twice — tiles can't be uncut. Mark the cut line with a felt-tip marker and check before cutting.

Grouting

Allow adhesive to cure fully before grouting — at least 24 hours for ready-mixed, 2–3 hours for rapid-set. Remove tile spacers.

Mix the grout to a smooth, lump-free paste. Apply with a grout float, pressing firmly into the joints at a diagonal to avoid dragging material back out. Clean excess from tile faces with a damp sponge (well wrung-out) before the grout skins over.

Don't grout the junction between the tiles and the worktop — this joint must be silicone, which accommodates the movement that occurs as the worktop flexes with temperature and loading. Kitchen-grade silicone (anti-mould formula) in a colour to match or contrast your grout: apply with a gun, smooth with a wet finger.

After Care and Sealing

Leave for 24–48 hours before getting the splashback wet. Polish off the grout haze with a dry cloth. Apply grout sealer to pale grout in kitchen areas — it significantly reduces staining from cooking splashes.