Mold Removal Cleaning — Bathrooms, Walls & Wallpaper
Black spots in the bathroom? A damp smell in the closet? Mold along the window frames? Korea’s humidity makes this very common, especially in officetels, one-rooms, and semi-basement homes. We remove it — and explain how to stop it coming back.
Mold & Korean Housing
Why Korean homes get so much mold. Humid summers and the monsoon (장마) season, compact units with little airflow, condensation where warm indoor air meets cold exterior walls, and semi-basement (반지하) housing all feed mold growth — most often in bathrooms, closets, behind furniture, and along window frames. Many foreigners are surprised by it; it’s normal here, and it’s treatable. Homes, companies, property managers, and multi-unit buildings are all welcome. Night, dawn, and weekend visits are charged at the same rate. A tax invoice (세금계산서) is available, and we work discreetly so your neighbors won’t know.
Residents finding black mold in the bathroom or on silicone seals, mold on wallpaper or closet walls, a musty/damp smell that won’t go away, or condensation problems in an officetel, one-room, villa, apartment, or semi-basement.
How We Treat Mold
Our cleaning approach:
- Remove visible mold from tiles, silicone, walls & frames
- High-temperature steam on affected surfaces
- Food-safety approved cleaning agents
- HEPA vacuum to capture loosened spores
- Odor neutralization for the damp/musty smell
- Practical advice on ventilation & moisture control
How It Works
Found mold? Send a photo in English
We’ll tell you honestly whether it can be cleaned or needs more, and give you a fixed quote.
Mold Removal FAQ
Why so much mold in my place?
Will it come back?
Is it a health risk?
Mold on wallpaper?
Cost?
Why Korean homes produce so much mold
If this is your first winter here, the amount of mold can be genuinely surprising. There are structural reasons, and knowing them changes what you do about it.
This is not about the building being badly maintained. The combination of floor heating, tight winter sealing and a humid summer climate creates conditions that most homes in Europe or North America simply do not have.
What actually stops it coming back
These are the measures that make a measurable difference, in the order that matters most.
Pull furniture away from walls
Leave at least five centimetres between a wardrobe or bed and any exterior wall. Air needs to move across that surface. This single change prevents more mold than any product you can buy.
Ventilate briefly and often
Two or three short bursts a day with windows fully open moves more moisture out than leaving a window cracked all day, and it loses less heat. Ten minutes is enough.
Run the bathroom fan longer
Keep it running for half an hour after a shower. If it is wired to the light switch, run the light too, or ask your landlord about a separate switch.
Do not dry laundry in a closed room
A single load releases a surprising amount of water into the air. Use the balcony with the window open, or a dryer if you have one.
Open wardrobes and shoe cabinets occasionally
Enclosed spaces with no airflow are where mold appears first, and where you notice it last. Leaving the doors open for a while helps.
Watch the coldest wall
Find the wall that feels cold to the touch in winter — usually one facing outside or a corner unit. That is where condensation starts, and where to check first.
Why does mold keep coming back in my apartment?
Because the cleaning removes the mold but not the condition that created it. In most Korean apartments and villas the cause is condensation on cold surfaces — an exterior wall, the corner of a room, or behind a wardrobe pushed flat against the wall. Warm humid indoor air meets that cold surface, water forms, and mold follows within weeks. Until the temperature difference or the air circulation changes, the same spot will keep producing it.
My bathroom has no window. What can I do?
Windowless bathrooms are very common in officetels and newer villas, and they rely entirely on the extraction fan. Run the fan for at least thirty minutes after showering rather than switching it off with the light, and leave the door open when the room is not in use. If the fan is weak or blocked, no amount of cleaning will keep the grout clear.
Is the black mold on my wallpaper dangerous?
We are a cleaning company and cannot give medical advice, so please speak to a doctor about symptoms. What we can tell you is what is physically happening: mold releases spores, and disturbing a colony by brushing it while dry sends those spores through the room. That is why we wet the surface first to hold the spores down before removing anything, and why we keep the room separated during the work.
Can you make my wallpaper look new again?
Not always, and we will tell you which case you are in before starting. Surface mold on wallpaper usually wipes away well. Once the growth has gone into the paper fibre, the stain fades but does not disappear. If it has reached the drywall or insulation behind the paper, that is beyond cleaning and becomes an interior repair question. We show you the difference in photos rather than promising a result we cannot deliver.
My landlord says the mold is my fault. Is it?
It depends on the cause, and both sides are sometimes partly right. Mold from a leak, from failed waterproofing or from a structurally cold wall is generally not the tenant's doing. Mold from never opening a window, drying laundry indoors without ventilation, or blocking airflow with furniture is usually attributed to the occupant. We document what we find — including whether there is a moisture source behind the surface — so the discussion is based on the actual condition.