The old bathtub is leaking, the enamel has gone yellow, and the edges are full of chips — a common problem in flats around Mokotow and Wola. Swapping the whole tub makes more sense than constant repairs: a new one stands straight on adjustable legs, keeps water where it should, and looks right again. We take out the old bathtub, hook up the new one to the drain and water supply, and check that every connection is tight — all during one visit.

How much does bathtub replacement cost

The final amount includes removing the old tub, getting the area ready, and fitting the new one with complete plumbing connections. The cost is affected by the bathtub material (acrylic, steel or cast iron), how awkward the pipe layout is, and what condition the walls behind the bath are in. Moving connection points or changing the trap assembly is priced separately. Fixings and sealant are part of the labour price. Materials (the bathtub itself, trap, bath panel) are provided by the client. Up-to-date rates for all bathroom jobs are shown in the table below.

How the replacement works

1. Inspection and measurements: we check the niche size, pipe locations, and the state of the subfloor under the tub.
2. Shutting off the water: we turn off the hot and cold valves and let the remaining water out of the pipes.
3. Removing the old bathtub: we disconnect the trap, remove the bath panel, and take the tub out. A cast-iron bath sometimes has to be broken apart on site — otherwise it simply will not go through the doorway.
4. Preparing the base: we level the floor and, where needed, replace sections of pipe or move the connection points.
5. Installing the new bathtub: we place it level on adjustable legs and fasten it to the wall (acrylic tubs are mounted on a support frame).
6. Connecting the plumbing: we install the trap, hook up the overflow and drain to the waste pipe, and fit the mixer tap if it is included in the order.
7. Sealing the joints: we run sanitary silicone around the entire edge where the tub meets the wall, then check for leaks by filling the bath fully.

Important: all plumbing jobs are done with the water supply turned off, followed by a full leak test. If we find problems with the riser or pipe layout, we tell you before the installation starts. Do not try to connect the plumbing on your own — one bad joint can flood the flat downstairs.

Common mistakes when replacing a bathtub

• Skipping the alcove measurement before purchase — the new tub will not fit, or wide gaps are left on both sides.
• Buying the cheapest trap — thin plastic splits within six months, and sewer smells start coming into the room.
• Installing an acrylic tub without a support frame — the bottom bends under load and sooner or later cracks.
• Ignoring the spirit level — water sits at one end and the drain works badly.
• Sealing the wall joint with expanding foam instead of silicone — foam falls apart from damp and mould starts growing underneath.
• Not checking the waste-pipe slope — water runs off slowly and dirt builds up in the trap.
• Taking out a cast-iron tub without proper prep — door frames and corridor tiles end up damaged.

What to prepare before the visit

• Purchase the new bathtub and check that it will fit through the doorway (or at least into the stairwell).
• Get a trap with an overflow — a semi-automatic version is more dependable.
• If you want a bath panel, buy it beforehand so the technician can install it during the same visit.
• Check that the shut-off valves can be reached easily (in the bathroom or on the riser).
• Remove unnecessary things from the bathroom: move the washing machine aside if you can, take down shelves.
• Leave a free route from the front door to the bathroom — the old tub has to be carried out.
• If the existing tub is cast iron — tell us in advance so we can plan the disposal.
• Decide whether you want the mixer tap changed as well — it is simplest to do it at the same time.
• Ask your building management whether there are any restrictions on noisy work hours.

A real case from Warsaw

We got a call to a flat in Ursynow. The owners had purchased a 170 cm acrylic tub to replace their old cast-iron one. The cast-iron bath weighed nearly 100 kg and would not go through the door, so we smashed it up with a sledgehammer right in the bathroom after protecting the floor and wrapping the toilet in plastic sheeting. The pieces were taken out in heavy-duty bags. Under the bath we found a crack in the waste pipe — we changed that section there and then. The new tub was installed on its factory frame, levelled, and connected to a semi-automatic trap. We sealed the joint to the wall with sanitary silicone and did the test: filled the tub right to the top, waited fifteen minutes — not one drop on the floor. The whole job took about four hours, including demolition and pipe repair. The owners were pleased — the tub is light, warm to the touch, and drains fast (compatible with Grohe, Hansgrohe, Geberit and similar).

Frequently asked questions

Book your bathtub replacement

We cover all of Warsaw — from Praga-Poludnie to Bemowo. We come with tools and fixings, connect everything, and test it in front of you. If you want help choosing a bathtub or trap before the visit, give us a ring. Contact us and we will set up a time that suits you.