Preventing Mould and Damp in a Vancouver Winter: A Cleaning Routine
Wet autumns and winters make Greater Vancouver homes damp. A simple weekly routine, based on Health Canada's guidance, helps stop moisture problems before they start.
S&A Cleaning Team
5 min read
Greater Vancouver's rainy season sends many people indoors with wet coats, damp laundry and closed windows, and that's when condensation and mould show up. Cleaning helps, but it's only half the answer. Health Canada's advice is to control moisture first. Here's a routine that follows it, plus where cleaning stops and a professional is needed.
Why do Vancouver homes get damp in winter?
Cool, wet weather means windows stay shut, moisture from showers, cooking and drying laundry has nowhere to go, and it settles on cold surfaces like window glass and exterior walls. Mould grows where moisture lingers, so condensation on windows and in bathrooms is the warning sign to act on.
What humidity level should you aim for?
Health Canada advises keeping indoor relative humidity roughly between 30% and 50%, and lower in cold weather to avoid condensation on windows and walls. A small humidity gauge costs little and tells you when to act. If it climbs, use a dehumidifier or ventilate more.
What weekly routine helps prevent mould?
A short, regular routine beats an occasional big clean. Focus on the places where moisture collects: bathrooms, window sills and tracks, the kitchen, and the areas around entrances where wet shoes and coats sit. Wipe damp spots before they dry into stains.
A weekly damp-prevention routine
- Wipe condensation from window glass and sills
- Clean window tracks so water can drain
- Wipe shower walls and the tub, and rinse the shower curtain
- Dry the bathroom floor and check around the toilet base
- Wash bath mats and towels regularly
- Check under the kitchen sink and around the fridge for leaks
- Wipe up wet boots and rain mats at the entrance
How does ventilation help?
Ventilation removes moisture before it settles. Health Canada recommends running bathroom and kitchen exhaust fans during showers and cooking and for a while afterwards, with fans that vent to the outside. Avoid drying laundry indoors where you can, because it adds a lot of moisture to the air.
Can you clean mould yourself?
Health Canada says small areas can be cleaned with soap and water, but mould returns unless the cause of the moisture is fixed, and painting over it doesn't kill it. Never mix cleaning products. If the area is large, keeps returning or follows a leak, speak to a professional.
We're a cleaning company, not a mould-remediation service, so we won't promise to remove mould that comes from a leak or building problem. We can keep the bathrooms, kitchens, windows and entrances clean so moisture and grime don't build up in the first place.
Which rooms need the most attention?
Bathrooms come first, followed by the kitchen, bedrooms with windows that fog up, and the entrance where wet things come in. Basements and spaces that don't get much air deserve a regular look as well. Check these spots weekly, and you'll catch most problems while they are still small.
- Bathrooms: shower walls, grout lines, the ceiling and the fan
- Kitchen: under the sink, around the fridge and behind the dishwasher
- Bedrooms: window sills, window frames and the wall behind big furniture
- Entrances: mats, boot trays and the floor underneath
- Closets and storage: look for a musty smell or damp corners
Are cleaning products safe to use in damp rooms?
Use products as the label says, ventilate while you clean and never mix products, because some combinations give off harmful fumes. Test a small hidden area first on painted or natural surfaces. If you have pets, children or sensitivities, choose gentler products. Soap and water is often enough for a small area.
What should you do at the first sign of a damp problem?
Act quickly. Find where the moisture is coming from, dry the area, ventilate and then clean it. If you can't find the source, or the spot returns, the cause hasn't been fixed. Report leaks in a rental to your landlord promptly, and keep a note with photos of what you saw and when.
First steps
- Find and stop the source of moisture if you can
- Dry the area, using a dehumidifier or fan if needed
- Clean a small area with soap and water, and dry it
- Photograph the problem and note the date
- Tell your landlord, strata or a professional if it returns
When should you call a professional?
Call a professional when mould covers a large area, comes back after cleaning, smells musty with no visible cause, or follows water damage. A cleaner can't fix a leak or poor ventilation. A building professional can find the source, and then regular cleaning keeps the space in shape.
- A leak, burst pipe or flood has wet the home
- Mould covers a large area or keeps returning
- A musty smell has no obvious source
- Someone in the household has breathing problems and you're worried about air quality
For the regular cleaning that keeps the home fresh through the wet months, see our home cleaning plans, or book a deep clean to reset the bathrooms, kitchen and window areas before winter sets in.
Read the official guidance
