Can you fit PVC wall panels over tiles? Tiles, plaster and showers

Can you fit PVC wall panels over existing tiles?

Yes, if the tiles are stuck fast and the wall is flat enough. Bond the panels to the tiles with a grab adhesive. Leaving tiles on protects the plasterboard behind, so it is usually the safer job.

The wall needs two checks. First, tap every tile and listen. A hollow sound means the tile is loose, and it comes off and the gap is filled flush. Second, lay a 2m straightedge on the wall in several places. Heavy grout lines or tiles with a raised pattern leave voids behind a panel, so a flat surface gives the best bond. If the surface is more than about 5mm out over 2m, fix battens instead of bonding direct.

How do I prepare tiled walls?

Clean them until they are free of soap film, shampoo residue and limescale, because adhesive grips a clean surface. A solvent PVCu cleaner cuts through film faster than washing-up liquid. Let the wall dry fully before any adhesive comes out.

Next, think about the build-up. The tile, the adhesive and an 8mm or 10mm panel all stack on the wall. Check how that lands at the door frame, a window reveal, the edge of a tray and the corners, because each of those needs a trim to cover the panel edge. A socket or switch in the wall will sit deeper after panelling, and moving one is a job for a qualified electrician.

What about plaster, plasterboard and painted walls?

Bare plaster and plasterboard are fine if they are dry, sound and dust-free. The same goes for the fluted panels: adhesive grips a sound, dust-free surface, so prepare the wall first.

• Chalky plaster: seal it with a diluted primer and let it dry, so the adhesive bonds to a firm face.
• Gloss or silk paint: sand it to a dull finish. Flaking paint: remove all of it.
• Wallpaper: strip it.
• New plaster: it needs weeks to dry before anything is stuck to it.
• Uneven walls: batten them with 50 x 25mm battens at 400mm centres, packed level, at right angles to the panels.

Which adhesive should I use?

Use an MS polymer grab adhesive or a solvent-free grab adhesive, such as Everbuild Multi Stick or Soudal Grip ALL. Both suit the printed face of a PVC panel.

Run vertical beads down the back of the panel at about 300mm centres, plus a bead about 10mm in from the edges. Press the panel to the wall, pull it off, wait a minute for the adhesive to skin, then press it back. A strip of double-sided foam tape holds a panel while the adhesive takes. Allow about one 290ml tube for every 2m2.

Can the panels go in a shower or round a bath?

Yes. The PVC wall panels are waterproof and suit bathrooms and kitchens, and you use sealant where panels meet baths and shower trays. PVC does not absorb water, so the joints and edges are what you seal.

Fit the panels so they sit behind the tray or bath upstand where the layout allows, so water runs down the face and into the tray. Fill the bath with water before you seal it and leave it full until the sealant has cured, so the joint holds when someone gets in. Use Stay Fresh anti-mould sealant and tool it to a bead of about 6mm. Where the gap is wider than that, pack it out or cover it with a quadrant. Leave 24 hours before the shower is used.

Which trims does a tiled wall need?

The same trims as any other wall, and they matter more here because they hide the step the tile and panel make. A starting section holds the panel edge at a door frame or window reveal. The Internal Angle Chrome goes in internal corners, and quadrant finishes the edge at a bath. Check the thickness each trim suits before you order: the internal angle suits 8 to 10mm, the starting section suits 10mm.

Should I take the tiles off instead?

Take them off if they are loose across the whole wall, or the wall is too uneven to batten. Strip them, make the wall good, and let it dry fully. After that it is a bare plaster or plasterboard job, and the same rules apply: sound, dry, dust-free. Leave firm tiles in place, which protects the board behind them.

Does the panel size make a difference?

A wide 1m x 2.4m panel has fewer joints than the 250mm x 2.6m size, so there are fewer joints to seal in a wet area. Narrow panels are easier to carry into a small bathroom and to cut around tight corners. Either size can go over tiles on the same preparation.

What figures should I work to?

Fitting over tiles: working figures

Item	Figure
Wall flatness to bond direct	Within about 5mm over 2m
Battens where the wall is further out	50 x 25mm at 400mm centres
Adhesive beads on the panel back	About 300mm centres, plus a perimeter bead 10mm in
Adhesive coverage	About one 290ml tube per 2m2
Gap at top and bottom	3mm
Panels laid flat in the room before cutting	24 hours
Sealant bead at bath or tray	About 6mm
Cure before using the shower	24 hours

What should I check before fitting over tiles?

Fit panels to a dry, sound wall. Check the tiles stay firm when you tap them, and use battens to bring an uneven wall level.

The trims for the edges are in wall panel trims, and the panel counting is in how many wall panels do I need. If you are unsure what is behind your tiles, ring 0151 525 4488 or bring measurements and a photo to the showroom.