Bath panel replacement: how to choose, fit and fix a bath panel

Why bath panels fail

Water is the usual culprit. Splashes run down the front of the bath and soak into the bottom edge of the panel, or a failed seal along the top lets water track behind it every time someone showers. MDF panels swell and lose their finish, and cheap acrylic goes brittle and splits around the fixings.

Knocks do the rest. A thin acrylic panel with little support behind it flexes every time a foot or a laundry basket hits it, and eventually cracks. In many bathrooms the panel was simply pushed into place with no proper frame, held by a couple of clips and hope.

Panel options: acrylic, MDF and tiled

Acrylic panels are light, easy to clean and unaffected by water, which makes them the most common choice. Thicker panels feel more solid and resist cracking. They can usually be trimmed to length and height to suit the bath.

Moisture resistant MDF panels give a more furniture like finish and suit bathrooms with matching vanity units. They need their edges sealed and should never sit directly in water on the floor. A tiled panel, built on a frame clad with cement based board, matches the walls and is the most durable of the three, but it takes more time and needs a planned way to reach the pipes.

The frame behind the panel

A good panel on a poor frame will crack or bow again. The frame is usually a simple run of treated timber along the floor and up to the underside of the bath rim, with uprights at intervals so the panel has something to fix into along its length. Where the old frame is missing, loose or soft with damp, it is replaced before anything else goes on.

This is also the moment to look under the bath. Damp floorboards, a weeping trap or a waste that drips when the bath empties are all much easier to deal with while the panel is off. If a leak has reached the ceiling below, the shower leaking through the ceiling guide explains how to trace it.

Keeping access to the bath trap and pipes

The trap, the waste and the tap connections all sit behind the panel, and one day somebody will need to reach them. Acrylic and MDF panels are normally fixed with screws or clips so they come away cleanly. On a tiled panel, a removable section or a discreet access hatch is built in, tiled to match and finished with a thin bead of silicone rather than grout so it can be lifted out.

• Use screws or clips rather than adhesive to hold the panel
• Leave a removable section opposite the trap on a tiled panel
• Avoid running a hard grout line across the access point
• Check the trap and waste are sound before closing up

Resealing after the new panel goes on

Once the panel is fitted, the sealant along the top edge where the bath meets the wall is usually renewed at the same time, because an old, discoloured seal is often the reason the panel failed. The old sealant is cut out completely, the joint is cleaned and dried, and a fresh bead is run while the bath is filled with water so it is sealed in its loaded position. The mouldy shower sealant guide covers the method in more detail.

A thin seal along the bottom of the panel where it meets the floor helps stop mop water and splashes creeping underneath.

When a panel swap turns into a bathroom refit

Sometimes taking the panel off reveals more than expected: rotten joists, a bath that has dropped on its feet, or tiles above it that have let water in for years. If the grout and tiles are the issue, the regrout or retile guide helps decide how far to go. If the suite itself is near the end of its life, it may make more sense to plan a full bathroom renovation rather than spend on a new panel for an old bath.

On its own, a bath panel replacement is a typical handyman job and is often booked alongside other small bathroom tasks such as resealing or fitting accessories.

How to replace a bath panel, step by step

Replacing a bath panel follows the same order whether the new one is acrylic or MDF. The old panel is removed, usually by pulling it away from the clips at the top or taking out the screws along the bottom. The frame is checked, and the new panel offered up, marked and trimmed to fit the height and length of the bath. It is then fixed to the frame, the top edge pushed under the bath rim, and the joints sealed.

• Measure the bath length and the height from floor to rim
• Remove the old panel and any trim
• Check, repair or rebuild the frame
• Trim the new panel to fit and fix it in place
• Seal the top and bottom edges and any end panel joint

How to fix a bath panel that has come loose

A bath panel that bows, pops out at the top or rattles when kicked usually has nothing solid behind it. The fix is to add or straighten the timber frame so the panel has something to screw into along its length. A panel that has cracked or swollen cannot really be repaired and is better replaced.

Choosing a replacement bath panel

Replacement bath panels come in standard lengths for front and end panels, and most can be trimmed. Measure the bath, not the old panel, as the old one may have been cut badly. Check whether the bath is a standard size, a corner bath or a shaped bath, as these need specific panels. Thicker acrylic or a reinforced panel feels more solid and lasts longer.

Need it sorted? Book a bath panel replacement

Bath panel fitting is booked through the bathroom renovations page, and it is often combined with regrouting and resealing in the same visit. If pipes on show need hiding at the same time, the boxing in pipes guide explains the options. Send a photo of the bath and panel through the contact page for a quote.

Frequently asked questions

Bathroom RenovationsHandyman Services