About this service
When to contact us
What the work includes
Related pages
When to contact us
This page is the direct route when the mould is in the bathroom. The cases we see most in Barcelona:
- a blackened bathroom ceiling, especially above the shower or bathtub
- dark marks on the strip of wall between the tiles and the ceiling
- shower or screen corners where the mark comes back after cleaning
- ceiling paint that has bubbled or is peeling from built-up steam
- internal bathrooms, or ones with a small window, where the mirror takes ages to clear
If the mould is in another room, the general route is mould removal in Barcelona.
Why bathrooms are different
A bathroom concentrates everything mould likes into a few square metres: steam every day, cold surfaces and long stretches with the door closed. That is why a generic repaint rarely lasts if the surface is not prepared with that daily moisture in mind.
It is also why we look at more than the mark: whether there is an extractor fan and whether it works, whether the window gets opened daily, whether the mark follows a sealant line or sits in the coldest part of the ceiling. Not everything needs changing — but we do need to know what is feeding the mark before covering it.
Send 3 photos on WhatsApp
The most useful things are:
- A wide shot of the bathroom — showing the ceiling and the shower area.
- A close-up of the mark — no flash: ceiling, corner or the strip above the tiles.
- A line about ventilation — extractor fan or window, and how much it gets used.
That is usually enough to say whether treating and repainting fits, whether the surface needs repair first, or whether what you are seeing points to aged silicone joints — which is a different kind of job, and we say so plainly.
How the work usually goes
Depending on the real condition of the surface, the work may include:
- treating visible mould on the ceiling, walls and corners of the bathroom
- repairing the surface where paint has opened, bubbled or been worn down by steam
- repainting with preparation and a finish suited to a wet room
A light mark on sound paint is not worked the same way as a ceiling that has spent years collecting steam. The proposal follows what the bathroom shows — not a fixed package.
Ceiling, silicone and wall: three different surfaces
The black mark may look like one problem, but the surface tells us what can sensibly be treated.
| Area | What we check | Why repainting alone may fail |
|---|---|---|
| Painted ceiling | Whether paint is firm, blistered or lifting | Steam can have already weakened the paint layer underneath |
| Painted wall above tile | Whether the edge is sound and the mark follows a cold corner | Condensation may keep returning to the same cold surface |
| Silicone or a flexible joint | Whether the discolouration is in the sealant, cracked or detached | A sealant affected through its depth is not restored by wall treatment |
| Plasterboard joint or repaired patch | Whether there is cracking, softness or a changing ring | Movement or water from elsewhere needs answering before a finish |
We can work on visible interior mould and prepare suitable painted surfaces. Renewing silicone, fitting an extractor, tracing a leak, plumbing and waterproofing are separate trades. If a stain grows after a neighbour uses their bathroom, after rain, or without relation to showers, tell us: it is a reason to pause surface treatment, not a reason to make a stronger cleaning claim.
Is the bathroom ready for a finish?
A sound finish starts after visible mould has been treated and the underlying paint is holding. We do not set a universal drying time from a message: rooms, materials and causes differ. Instead, we look for paint that does not lift at the edge, a mark that is not spreading, and a surface that is not obviously soft or shedding. In a bathroom with daily steam, the practical question is also whether the room can clear moisture after use. An extractor that does not draw, or a window that is never opened, is not something paint can correct.
What not to do yet
Painting over a mould mark in a bathroom is the fastest way to see it again: the steam is still there and the base ends up worse prepared. Scrubbing blackened silicone with aggressive products rarely brings it back either; if the joint is taken from the inside, the honest answer is to say so and consider renewing it — not to promise a cleaning will make it look new.
Do not mix household cleaning products, especially bleach with ammonia-based products, in a small closed bathroom. If you clean a small visible area yourself, ventilate the room and avoid spraying upwards towards your face. That is ordinary product-safety advice, not a diagnosis or a substitute for finding the cause.
What to send, and where we cover
Send a wide photo showing the shower and ceiling, a close photo of the mark, and a line saying whether there is a window or extractor. It also helps to say whether the flat is occupied all year, rented out or kept closed for periods. We start from Barcelona and can discuss metropolitan and coastal visits from photos; we do not present a local office outside Barcelona. You can write in English on WhatsApp.
What we do not promise
We do not promise mould will never return: if the bathroom keeps generating more moisture than it ventilates, the problem can come back. We do not name species, talk about toxicity, make health claims or quote a price without seeing the case. Treatment and repainting done properly help reduce the risk of it returning; daily ventilation does the rest.
Related pages
If you are still working out the symptom — bathroom mould guide. If the ceiling is badly worn or awkward to reach — damp ceiling repair. When the base is already sound and you only need the finish — anti-mould painting. To send photos now — contact.