Can You Put Stick-On Tiles Over Existing Tiles? Yes — Here's How

Yes — STA's stick-on tiles are designed to be installed directly over existing tiles. No demolition, no re-tiling, no trade booking. Clean the surface, cut the sheets to size, peel, and stick.

What surfaces can you install stick-on tiles over?

STA's Vinyl and Composite tiles install directly over existing tiles, gyprock, glass, painted walls, acrylic, stainless steel, aluminium and plastic surfaces. That range covers the vast majority of kitchen splashbacks, bathroom walls and laundry surfaces in Australian homes — including ones that have already been tiled.

Do you need to prep the surface first?

Minimal prep. The surface needs to be clean, dry and in good condition before installation — a wipe-down to remove dirt, dust, grease and soap residue is usually all that's required. No sanding or specialised prep is needed in most cases.

What condition do the existing tiles need to be in?

Sound and flat. Existing tiles should be firmly adhered with no loose or lifting sections, and free of major chips or cracks that would create an uneven surface underneath. Deep grout lines can telegraph slightly through thinner sheets, so for heavily textured or uneven existing tile, the 4mm Composite range gives more coverage than the 2.5mm Vinyl range.

Will the old grout lines show through?

With a flat, well-maintained existing tile surface, no — the new stick-on tile sits flush and hides the old layout underneath. If the current grout lines are deep or the tiles are uneven, going with the thicker Composite range minimises any risk of show-through.

What tools do you need to install over existing tiles?

A sharp Stanley knife for cutting sheets to size, a tape measure, and silicone for finishing the edges. That's the full kit for a standard DIY install — no adhesive, grout or trowel required, since the tiles are self-adhesive.

Which range is best for covering existing tiles?

For walls and splashbacks: Composite Wall Tiles (4mm, best coverage over texture) or Vinyl Wall Tiles (2.5mm, sleeker finish on flatter surfaces). For floors: Vinyl Floor Planks, designed to go straight over existing floor tiles with no demolition. Order a sample kit to check the finish against your current tile colour before ordering a full room.