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Can you tile over existing tiles?
Sometimes, if the old tiles are firmly stuck, flat, clean and on a base strong enough for the extra weight. It fails when the old tiles are loose, cracked or hollow, when the extra thickness clashes with doors and fittings, or when the wall or floor cannot take the load.
Last reviewed:When can you tile over tiles?
Tiling over existing tiles can save a lot of mess. Stripping old tiles is noisy and dusty, and it often damages the wall or floor underneath. If the old tiles are sound, laying new ones over the top can be a reasonable shortcut.
It only works if the old surface is a good base. Most tilers check:
- Every old tile is firmly stuck. Tap across the surface. A hollow sound means a tile has lost its bond.
- The tiles are flat and level. New tiles follow whatever is underneath.
- No cracks or movement. A crack in an old tile often means movement in the floor or wall that will crack the new tile too.
- The surface is clean. Grease, soap and sealers stop adhesive bonding.
If any of these fail, stripping back is usually the safer choice. Our tilers page covers the trade.
QuoteZila starts in Cheshire, with Crewe, Nantwich and Sandbach first, and anyone in the UK can post a tiling job.
Will the wall or floor take the extra weight?
A second layer of tiles and adhesive adds weight. A solid brick or block wall can usually take it. Plasterboard has a weight limit, set by the board maker, and a second layer of tiles may push past it, especially with large or stone tiles.
On floors, a timber floor that flexes is a problem. Two layers of tiles on a bouncy floor are more likely to crack. Ask your tiler to check the floor and say whether it needs stiffening or a new base board.
What about height and fittings?
Every layer of tile and adhesive raises the surface. On walls, that can leave sockets, switches, tap valves and shower controls sitting too far back, and window sills or edges looking odd. On floors, it can mean:
- doors that no longer clear the new floor and need trimming
- a step up at the doorway, which can be a trip hazard
- kitchen appliances that no longer slide under the worktop
- a toilet or pedestal that needs lifting and refitting
Ask each tiler to list these knock-on jobs. They often decide whether tiling over is worth it.
Do old floor tiles need care?
Some older floor tiles, and the adhesive under them, can contain asbestos. HSE says asbestos may be part of any domestic building built or refurbished before the year 2000, and lists floor tiles among the places it can be found [S1].
HSE says that asbestos materials in good condition and unlikely to get damaged are often better left where they are [S1]. It also says not to try to repair or remove asbestos materials yourself without training for non-licensed asbestos work [S1]. HSE asks householders to tell builders about any asbestos materials before they start, and strongly encourages using trained professionals to repair or remove them [S1].
If you have old vinyl or thermoplastic floor tiles, tell your tiler before they visit. Tiling over can avoid disturbing them, but grinding, cutting or lifting them is not a DIY job. Our asbestos removal guide explains what a removal quote should include. This page does not give any method for working on suspect tiles.
How do tilers prepare old tiles?
Preparation depends on the products used, and the adhesive maker's instructions come first. In general, a tiler will:
- fix or remove any loose tiles and fill the gaps
- clean off grease, soap and sealer
- prime the surface with a product made for tiling onto glazed tiles
- use an adhesive suitable for that base and for the new tiles
- plan the layout so new joints do not line up with old ones, where possible
Ask what primer and adhesive they will use, and whether they suit your tiles.
Strip or tile over?
| Tile over | Strip first |
|---|---|
| Old tiles sound, flat and firmly stuck | Old tiles loose, hollow or cracked |
| Solid wall or stiff floor | Plasterboard near its limit, or a springy floor |
| Little impact on doors and fittings | Doors, sockets or appliances would need altering |
| Dry area | Shower enclosure or wet room with signs of leaks |
Citizens Advice suggests trying to get written quotes from at least 3 different traders before you decide on one [S2]. Ask each tiler to price both methods if they think either could work. Our tiling cost guide explains what changes the price.
Jobs you might post
These are examples, not taken from real job posts.
- "Kitchen splashback with sound old tiles. Would like to tile over if possible. Please advise and quote."
- "Bathroom floor tiled over old vinyl tiles from the 1970s. Please advise and quote for new floor tiles."
- "Shower wall tiles cracking. Please quote to strip and retile, or say if tiling over is suitable."
QuoteZila is free for customers and local businesses [QZ1]. Your job goes to up to five matched local businesses [QZ2].
Honest status: QuoteZila is new. We're starting in Cheshire, beginning with Crewe, Nantwich and Sandbach, and growing area by area. Anyone in the UK can still post a job or register a business. How fast you get quotes depends on how many local businesses have joined near you. Businesses can register and receive jobs straight away. We don't check insurance, qualifications or registrations, so please check these yourself before you hire.
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Questions about tiling over tiles
Do I need a special adhesive to tile over tiles?
Usually a primer and an adhesive suitable for tiling onto existing glazed tiles. Glazed tiles are smooth and do not absorb, so standard methods may not bond well. Follow the adhesive maker's instructions for tiling over tiles.
Can you tile over tiles in a shower?
It is riskier. If water has already got behind the old tiles, adding a new layer traps it. Most tilers prefer to strip a shower enclosure, check the wall and waterproof it before retiling.
Is it cheaper to tile over tiles?
It can save the time and mess of stripping, but it is not always cheaper overall. Primer, a suitable adhesive, trimming doors and refitting fittings all add cost. Ask for a price for both methods.
Does QuoteZila check tilers?
No. We don't check insurance, qualifications or registrations, so please check these yourself before you hire. You can report a quote or a business from your job page.
This page is general information, not professional or legal advice. QuoteZila does not check Gas Safe, WaterSafe, NFRC, NICEIC or other registrations against the register on your behalf: look them up yourself.
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Related pages
- Drilling a Tile: How to Set the Hole Up. How to drill a ceramic or porcelain tile for a hook or a fitting: mask the glaze, go slowly, and stop if a pipe or a cable might be behind the wall.
- How Long Does Grout Take to Dry? What Sets the Time. Why grout drying and curing times vary, where to find the right figure for your grout, what slows it down, and when a shower or floor can go back into use.
Sources
- QZ1: QuoteZila product fact. QuoteZila home and FAQ copy.
- QZ2: QuoteZila product fact. QuoteZila FAQ How does getting quotes work.
- S1: Asbestos: frequently asked questions, Health and Safety Executive. Accessed 2026-11-02. https://www.hse.gov.uk/asbestos/faq.htm
- S2: Before you get building work done, Citizens Advice. Accessed 2026-11-02. https://www.citizensadvice.org.uk/consumer/getting-home-improvements-done/before-you-get-building-work-done/