Washbasin Installation in Warsaw — Fast, Reliable, Leak-Free

New washbasin sitting in its box while the old one is barely hanging on? Or renovating your bathroom and need a basin fitted from scratch? Washbasin installation seems straightforward until you start: water supply connections, trap, sealing, wall mounting. One mistake and you have a puddle on the floor within a week. We install washbasins across Warsaw: we bring our tools, connect to the water supply and drainage, and check every joint for leaks. If needed, we will replace the trap, fit a mixer tap, or install a vanity unit.

How much does washbasin installation cost

The cost depends on the basin type and connection complexity. A wall-hung basin without a cabinet is quicker and simpler. A basin on a vanity unit means assembling furniture, adjusting cutouts, and connecting everything inside. A countertop-mounted basin is the most involved option. Price is also affected by whether supply hoses need replacing, whether a new trap is required, and whether the connection point needs moving. Fixings and sealant are included. See current prices in the table below.

How the installation works

1. We shut off the water and drain the pipes.
2. If there is an old basin, we remove it: disconnect the trap and tap, undo the wall fixings.
3. We mark the position for the new basin using a spirit level. Standard height is 85 cm from the floor, adjusted to suit the household.
4. We drill into the wall, fit wall plugs and threaded rods (or brackets, depending on the model).
5. The basin is hung, checked for level, and the fixings tightened.
6. We install the trap and connect it to the drain. All joints use rubber gaskets plus sealant.
7. The mixer tap is fitted (if supplied) and flexible hoses connected to the water supply.
8. We turn the water back on and check every connection for leaks. Wipe down and tidy up.

Common mistakes when installing a washbasin

• Not scanning the wall before drilling — hitting a pipe or cable. We always use a detector before making any holes.
• Mounting the basin on plugs alone without threaded rods — the basin works loose over time, especially heavy ceramic models.
• Over-tightening ceramic against the wall — it cracks. Ceramic must be drawn up gently with rubber washers.
• Assembling the trap without gaskets or at an angle — it starts dripping within days.
• Forgetting to check the drain gradient — water sits in the bowl and you get a sewer smell.
• Reusing old flexible hoses — the rubber lining cracks with age, creating a leak risk.
• Not sealing the basin-to-wall joint — water runs behind the basin and soaks the wall.

What to prepare before the technician arrives

• The new basin should be in the flat, unpacked and checked for chips.
• If you have a tap, have it ready too (with hoses included).
• Ensure access to the shut-off valves — the technician will need to turn off the water.
• Check the wall type (concrete, brick, plasterboard) — this determines the fixings.
• If it is plasterboard, a backing support or special fixings are needed (let us know in advance).
• Clear everything from under the basin area and ensure free access to the pipes.
• Provide the intercom code and parking information.

Case study: washbasin installation in Ursynow

A client bought a wall-hung Cersanit basin for a guest bathroom. The wall was hollow brick and the supplied plugs would not hold. We switched to 10×80 expansion anchors — rock solid. The trap from the kit had a short outlet — the drain pipe was recessed deeper than usual. We fitted a flexible connector with an adapter. The client chose a tap with a pop-up waste — we connected it and adjusted the action. The whole job took about an hour and a half. We pressure-tested every joint — bone dry. The client called a week later to confirm everything was still perfect.

Frequently asked questions

What basins do you install?
Any type: wall-hung, pedestal, vanity-mounted, countertop-inset. Cersanit, Roca, Grohe, IKEA, Deante — the brand does not matter.

Do I need to buy a trap and hoses separately?
Usually the trap comes with the basin and hoses come with the tap. If not, we will source and fit them — material cost is separate.

Can you install a basin on plasterboard?
Yes, if there is a backing support (timber or metal profile behind the board). Without one, we use specialist plasterboard fixings, but for heavy ceramics this is not ideal.

How long does installation take?
A simple wall-hung basin — 1 to 1.5 hours. With a vanity unit — 1.5 to 2.5 hours. Countertop-inset — 2 to 3 hours.

Is removal of the old basin included?
Removal is charged separately, but it is usually inexpensive — depends on the complexity.

Who does the work and how we operate

Plumbing installations are carried out by technicians experienced in Warsaw bathrooms. We know the quirks of local buildings: hollow brick in Mokotow newbuilds, solid concrete in Praga, plasterboard partitions in Wola. We arrive with our own tools and consumables. We cover all of Warsaw and the surrounding area. To book a technician, call or message us and we will reply within an hour.