Water and protection
Where a bathroom needs waterproofing, why it is never the place to cut corners, and what to ask your contractor before the floor and walls disappear under tile.
dry and clean: a bathroom reference
Domfordom — dry and clean
The bathroom is the smallest and hardest-working room in the house. Water runs here every day, steam lingers, towels dry, and often the washing machine runs too. If water has nowhere to drain and damp air has nowhere to go, problems build up quietly: grout lines darken, sealant peels away, and a musty smell settles into the corners. We explain how the wet rooms of a home work, what to look at during a renovation, what you can safely do yourself and when it is better to call a plumber, an electrician or your building management.
Dry grout and a working exhaust fan matter more to a bathroom than the most striking tile.
Where to start
Air and dryness
How to tell the exhaust fan is not keeping up, where condensation on the mirror and pipes comes from, and how to keep damp from settling into the corners.
Tile and grout
Tile, mosaic, grout and sealant: how to match them to the job and care for the joints so they stay light for longer.
If there is a leak
First steps in a leak: shut off the water, keep away from wet electrics, warn your neighbors and notify the building management.
Reference sections
- Materials
Tile and mosaic, grout and sealants, moisture-resistant panels and paints, flooring, glass and curtains: what to consider when choosing. Plus our article catalogue.
- Ideas
Ideas for a combined bathroom, a small bathroom, a shower instead of a tub, a laundry nook, a bathroom for older people and kids, and a powder room.
- How-to
How to renew the sealant around a tub, clean a sink trap and refresh tile grout lines, calmly and following the manufacturer's instructions.
- Planning
The order of a bathroom renovation: inspection, waterproofing and ventilation, specialist work, sequence of jobs, sign-off and choosing a pro.
- Tools
What to keep on hand for inspections, small repairs and leaks: from a flashlight and a level to a bucket and rags.
- Care
Caring for grout, sealant, drains, faucets, the exhaust fan, glass, textiles and bath mats, by fixture and by season.
- FAQ
Answers about this reference, about bathroom and toilet renovations, about caring for wet rooms and about what to do when there is a leak.
Example: a ten-minute bathroom check
Grout and sealant
Run a finger along the sealant at the tub and sink. If it is lifting at the edge, has darkened or there is moisture underneath, it is time to redo the joint. While you are at it, look at the grout in the corners and along the floor: crumbling, dark patches most often hide right there.
Signs of moisture
Shine a flashlight on the ceiling, especially in the corners and above the shower, then look under the sink and behind the toilet. Stains, bubbling paint, drops on pipes or a damp vanity floor are reasons to find out where the water is coming from.
Exhaust fan draw
Leave the door slightly open and hold a sheet of paper up to the fan grille. If the paper is drawn against the grille, air is leaving; if it hangs still or drifts into the room, the ventilation needs attention. Do not remove the grille or look inside.
Faucets and hoses
Turn the faucets on and off and watch whether the spout drips or water seeps out at the base. Check the flexible hoses under the sink and at the washing machine: drip marks, rust spots and bulges mean it is time to show them to a plumber.
Bath mat and grab bar
Step onto the mat by the tub with wet feet: it should not slide across the floor. If older people or small children live with you, think about where a grab bar would help them, and put everything you noticed into one short list.
The essentials in brief
Do you do renovations or sell plumbing fixtures?
No. Domfordom is an independent reference. We sell nothing and do no work; we explain how the wet rooms of a home work and how to speak the same language as the pros you hire.
Can I move bathroom outlets myself?
No, that is a job for an electrician only. Anything involving electricity in a wet room, such as outlets, light fixtures, a water heater or underfloor heating, is done by a specialist. They will also choose protection and devices rated for damp conditions.
What should I do if I have flooded my neighbors?
Shut off the water to your home right away and mop up what you can. Warn the neighbors below, call the emergency line of your building management and wait for their staff to find the cause. The damage is recorded in a report afterwards, so take photos of everything on your side too.
Where do black spots in tile grout come from?
Most often it is mold, which loves moisture and stale air. The spots tell you the grout is not getting a chance to dry: the exhaust fan draws weakly, the door is always shut, laundry is dried right in the bathroom. Clean the grout with a product used per the manufacturer's instructions and improve ventilation, or the spots will come back.
About the project
This domain used to host unrelated pages. Their content has not been kept, we do not reproduce it, and this reference has nothing to do with them. The name came to us together with the domain.
Domfordom is written for people who live in an ordinary apartment or house and want their bathroom to be dry, clean and safe: new homeowners, families with babies or aging parents, and anyone getting ready to renovate a bathroom. We do not name brands or costs; instead we describe the signs to look for, the order of steps and the point at which you need a specialist.
Read next
- Planning
The order of a bathroom renovation: inspection, waterproofing and ventilation, specialist work, sequence of jobs, sign-off and choosing a pro.
- Care
Caring for grout, sealant, drains, faucets, the exhaust fan, glass, textiles and bath mats, by fixture and by season.
- How-to
How to renew the sealant around a tub, clean a sink trap and refresh tile grout lines, calmly and following the manufacturer's instructions.
What we rely on
- Instructions from manufacturers of finishes and plumbing fixtures
- Rules for using residential premises and guidance from building management
- Domfordom editorial materials
Domfordom's advice is written in general terms and is based on the instructions of finish and plumbing fixture manufacturers and on guidance from building management. Check the label for sealant or grout drying times and for how to use a cleaning product, and leave electrics, gas and shared building pipes to specialists.