Floor-Standing Toilet Installation in Warsaw — Secure Mounting and Connection

The floor-standing toilet is a classic that still sits in most Warsaw apartments. In older blocks around Praga-Poludnie, in panel buildings across Ursynow, in new studios in Bielany — it is everywhere. Fitting one looks straightforward: bolt it to the floor, connect the water supply, join it to the drain. In practice there are plenty of details to get right: a misaligned outlet, a pipe that does not match, uneven tiles. If you are thinking of doing it yourself, read on to see what can go wrong. If you would rather avoid surprises, call a professional.

How much does floor-standing toilet installation cost

The price depends on the toilet type, the condition of the waste pipe and the water supply point. A close-coupled cistern model is simpler and cheaper to install. A monoblock or a toilet with a separate wall-mounted cistern costs a little more in labour. If new connectors, flexi hoses or adapters are needed, those are separate materials paid for by the client. Fixings are included. Current rates for all plumbing work are in the table below.

How the installation works

1. Site inspection: we check the waste outlet type (horizontal, vertical or angled), the location of the water supply, and the condition of the tiles or screed.
2. Dry fitting: the toilet is placed without fixings, the outlet is aligned with the waste pipe, and we decide whether a flexi connector or rigid adapter is needed.
3. Marking and drilling the mounting holes. Tiles are drilled with a diamond bit on low speed, then we switch to hammer mode for the concrete underneath.
4. Wall plugs go in, sanitary silicone is applied to the base of the toilet and to the waste connection.
5. The toilet is bolted down, tightened evenly on both sides — uneven pressure cracks ceramics.
6. Cistern connection: internal valve assembly is fitted, the water supply hose is attached, fill and flush valves are checked.
7. Test flush: we verify every joint for leaks and make sure the flush mechanism works correctly.

Important: this work involves water supply and drainage connections. If you have no experience, do not take the risk. A poor seal on the waste pipe can lead to leaks and water damage to the flat below. It is far cheaper to call a professional once than to pay for someone else’s ceiling repair afterwards.

Common installation mistakes

• Not checking the outlet type before buying — purchasing a toilet with a horizontal outlet when the pipe exits the floor (vertical). This means adapters or a different toilet.
• Over-tightening bolts on one side — the ceramic cracks and the toilet is ruined.
• Skipping silicone around the base — cleaning water seeps underneath, causing mould and odour.
• Placing the toilet on an uneven floor without levelling — it rocks, and the fixings loosen over time.
• Reusing an old flexi connector — it is already deformed and will start leaking within months.
• Forgetting to check the cistern valves after installation — water runs constantly, driving up the meter.
• Not shutting off the water before starting — flooding the bathroom when disconnecting the old supply hose.

What to prepare before the visit

• Buy a toilet with the correct outlet type — check in advance whether your flat has a horizontal, vertical or angled waste pipe.
• Verify the package contents: cistern, internal valve set, mounting bolts, seat — make sure nothing is missing.
• Ensure access to the riser and the shut-off valve for the water supply.
• If the old toilet is still in place, let us know whether removal is needed (that is a separate job).
• Floor tiles should be laid before the toilet is installed.
• Have a flexi hose, connector or rigid adapter ready — if you are unsure about sizes, send us a photo and we will advise.
• Clear the bathroom of unnecessary items — we need space to work.
• If the building has a shared riser and the water needs to be shut off centrally, inform the neighbours or building management in advance.

A real case from Warsaw

We got a call from Ursynow. The owners had bought a resale flat and were renovating the bathroom. They removed the old toilet themselves, laid new tiles, then could not fit the new one. The issue was straightforward: they bought a toilet with a horizontal outlet, but the waste pipe came up through the floor — vertical outlet. They did not want to return it. We sourced a 90-degree elbow adapter, adjusted the height, sealed everything. Connected the cistern, ran a test flush — it all worked, no leaks. The job took just over an hour because of the adapter work. With the correct outlet type, it would have been about forty minutes.

Frequently asked questions

How long does installation take?
A standard floor-standing toilet installation takes 40 minutes to an hour and a half. If the old toilet needs removing, add another 20 to 30 minutes.

Can a toilet be mounted on a wooden floor?
Yes, as long as the floor is solid and level. We use long screws with washers and seal the base with silicone.

Should the connector be replaced when swapping the toilet?
Almost always, yes. Old connectors deform under weight and lose their seal over time. Saving money on a connector usually ends in a leak.

Which sealant should be used?
Sanitary silicone with an anti-mould additive. Standard acrylic sealant is not suitable — it lets water through and yellows.

Can the toilet be relocated?
Yes, but only if the waste pipe can be extended with the correct gradient. Over longer distances a macerator pump may be required. That is a separate project.

What if the toilet rocks after installation?
That means the floor is uneven or the bolts are not tight enough. The toilet needs to come off, the base levelled with packing or compound, and then refitted.

Book the installation

We work across Warsaw and arrive with tools and basic fixings. The toilet and consumables (connector, hose, silicone) are supplied by the client. Not sure what to buy? Send us a photo of the bathroom and we will advise. Get in touch and we will arrange a convenient time.