Change the way your bathroom works

Replace a bath with a shower: plan the change

To replace a bath with a shower, start with the room layout and the construction beneath the bath. The right plan covers the new shower system, drainage, waterproofing and the walls and floor that removal will expose.

Shower and bathroom finishes from a Fix All project
From our project gallery.

What should the new shower improve?

Write down why you want to remove the bath. Easier entry, a more useful shower, simpler cleaning or a better room layout can lead to different solutions. Decide whether anyone still needs the bath and whether there is another one in the home. Make the choice around how your household lives rather than a promised resale benefit.

The bathroom renovation guide helps organise the wider project. If the bath is the only thing you want to change, still check whether the remaining vanity, toilet and door will work with the new shower opening.

  • Who will use the shower, and does anyone need assistance?
  • What makes the present bath or shower difficult?
  • Which bathroom fittings and finishes are worth keeping?
  • How will the household bathe while work is underway?

The bath footprint is only the starting point

Measure the bath area and show the window, door, toilet and vanity on the same plan. Include any ledges, boxed services and sloping ceilings. A shower that fits the floor rectangle may still have an awkward entry or put spray against a window.

Bath waste and shower drainage are not automatically interchangeable. Ask the plumber and designer to confirm the drain position, capacity and route required by the proposed system. The existing floor, framing and services determine what changes are practical.

Check the wall area above and behind the bath. Removing the bath can expose unfinished surfaces, damaged lining or a floor finish that stops at the bath edge. Decide how those areas will be rebuilt and how the new finish will meet the part of the room being retained.

Compare three bath-to-shower options

OptionWhy consider itResolve before ordering
Tray and enclosureA defined shower base and screen arrangement with matched components.Installed footprint, entry, support, drain position and enclosure opening.
Low-profile trayA lower-looking entry within a tray system.The actual installed step, floor build-up, access needs and compatible screens.
Tiled wet-area showerA tailored layout with the possibility of level access where feasible.Structure, falls, substrate, waterproofing, drainage and water containment.

Our wet room versus shower comparison explains the differences in water management and daily use. For the surface system, the tiled versus acrylic shower guide goes into the care and construction trade-offs.

If easier access is the main reason for the project, include controls, seating, support and the route through the room. A shallow tray edge alone does not resolve every access problem.

What the replacement work needs to include

Ask for a scope covering removal and disposal, inspection of exposed areas, repairs, service alterations and the complete shower installation. The new wet-area construction must be coordinated as a system. Waterproofing, lining and junction details should be resolved before final finishes go on.

A window within the proposed shower area deserves early attention. Its position and surrounding construction may affect water exposure, privacy and the detail connecting the wet area to the opening. Keep that question in the design brief instead of leaving it for the installer on the day.

  • How will the old bath be removed without avoidable damage to retained fittings?
  • What happens if damaged framing or flooring is found?
  • Who coordinates plumbing, electrical and wet-area work?
  • How will new flooring, wall finishes and skirting meet retained areas?
  • What design, council checks and installer documentation are required?

Replacing a bathtub with a shower: plan the sequence

Confirm the layout, product specifications and approval requirements first. Order the components once the dimensions and construction are settled. Arrange another bathing option and agree how the work area will be protected and accessed.

After removal, the team can assess the exposed construction and complete any agreed repairs. Service work and substrate preparation come before the shower system and finishes. Screens, fittings and final connections follow in the order required by the selected products and trades.

Keep drying and curing periods in the programme. The shower may look complete before it is ready for use. At handover, ask for a demonstration of normal operation and the cleaning and care instructions for the installed surfaces, drain and screens.

Prepare a quotation you can compare

Give each contractor the same room photos, measured plan and preferred shower system. Identify what is staying, what is being replaced and who supplies each product. A price for installing a supplied enclosure is a different scope from a complete bath removal and bathroom alteration.

Include in the briefClarify in the quote
Existing roomBath dimensions, access, floor construction where known and visible damage.
New showerSystem, fittings, screens, entry requirements and product specifications.
FinishesThe exact extent of floor and wall replacement, painting and making good.
UncertaintyAllowances for hidden repairs and the process for agreeing changes.
CompletionTrade coordination, required documents, cleaning and the date the shower can be used.

Use our renovation quote comparison guide to check inclusions. If the change expands into a full room project, revisit the bathroom renovation checklist before ordering.

Your questions

Can a new shower use the bath drain?

The plumber needs to check the proposed shower system and the existing drainage. The position and requirements may differ, so confirm the detail before selecting the tray or tiled layout.

Can I keep the rest of the bathroom?

Often some fittings can be retained, but bath removal exposes walls and flooring that may need repair or replacement. Agree exactly how the new work will meet the retained finishes.

Will replacing the bath create a level-entry shower?

Only if the floor construction and drainage allow an appropriate design. Include the person’s access needs and the whole room layout when comparing the options.

Plan the change before removing the bath

Send photos of the bath, nearby windows and the whole bathroom, along with your priorities. We can discuss the building scope for your bathroom renovation.

Talk through your bath replacement