A shirt hung up indoors in January is drying into air that is already close to full. Laundry in a wet climate is not a question of patience, because there is a point beyond which nothing dries at all, and fabric that sits at that point for two days picks up a smell you then have to wash out again.
How drying actually works
Evaporation is water leaving fabric and joining the air as vapour, and air can only carry so much vapour before it stops accepting more.
Relative humidity describes how full the air already is at its current temperature. At fifty percent there is plenty of room. At ninety percent there is almost none left.
Warm air carries far more vapour than cold air, which is why a cold damp room is the worst possible place to dry anything even though the weather outside is identical.
Movement matters as much as capacity. Fabric sitting still builds a saturated layer of air right at its surface, and drying stops until something carries that layer away.
So drying needs three things at once. Room in the air, warmth, and movement. Remove any one of the three and the process slows to nothing.
This is why a fan pushing room temperature air across a rack beats a heater in a shut room.
In a dry part of the country you can be careless about all three and still get dry clothes. In a wet climate the first one is missing for months at a time, so the other two have to carry the work.
Why indoor drying stalls in a wet climate
Through the long grey months, outdoor air sits high in humidity for weeks at a stretch, and indoor air follows it up.
Bringing that air inside and warming it does genuinely help, since warm air has more capacity, and it helps only up to a point.
Then the laundry itself gets added. One machine load carries a couple of litres of water, and all of it goes into the room.
The room reaches a balance where the air is as full as it can get, evaporation effectively stops, and the clothes are still damp.
People read that as slow drying and give it another day. In a wet climate another day is the problem rather than the answer.
A load that has not finished after roughly a day indoors is not going to finish. It is going to sit.
Where all that moisture goes
Water leaving the clothes does not leave the house. It stays in the air until something takes it out.
Warm damp air reaches a cold surface, usually a window or an outside wall, and the vapour turns back into liquid water there.
That is why windows run with condensation on a winter morning in a house where laundry dried overnight.
It also means everything else gets damper. Bedding, stored towels and clothes in a wardrobe all take up moisture from the air around them.
Moisture has to be removed rather than relocated. That means ventilation to the outside, a dehumidifier, or a vented dryer.
Drying clothes in a closed bedroom is the version that causes the most trouble, because the room is cool and the water has nowhere at all to go.
Why damp fabric turns stale
Fabric that stays damp for a day or more develops a distinct stale smell, and it is a reliable signal rather than bad luck.
The smell comes from what is left in the fibre. Body oils, skin, detergent and softener all remain in small quantities after a wash, and in warm damp fibre those residues break down and give off odour.
Cotton and terry show it worst, because they hold the most water and have the most internal surface inside the yarn.
The smell sits inside the fibre rather than on the surface, which is why a quick rinse does not shift it and why it returns the moment the item gets damp again with wear.
Getting it out takes a hot wash at a full detergent dose, or a wash with washing soda added, followed by drying quickly and completely.
Prevention is much easier than removal. Nothing sits wet in a machine, nothing sits half dry on a rack for two days, and nothing goes into a drawer that is not properly dry.
In a wet climate that last rule does most of the work, because the gap between fully dry and nearly dry is where the whole problem lives.
The spin does more than the dryer
Every litre of water the spin removes is a litre the drying no longer has to deal with.
Spin speed is measured in revolutions per minute, and the gap between settings is large. A slow spin leaves cotton holding close to its own weight in water. A fast one gets that down to a fraction.
Somewhere dry that difference costs an hour. In a wet climate it decides whether the load ever finishes at all.
Use the highest spin the fabric will take. Cotton, denim and terry accept the maximum without complaint.
If the machine offers a spin on its own, use it a second time on heavy items. Two extra minutes of spinning saves hours of drying.
Do not pack the drum, because an overfilled machine cannot balance and drops its own spin speed to compensate. The load then comes out far wetter than the setting suggested it would.
Drying fully rather than nearly
Nearly dry is the state most laundry in a wet climate ends up in, and it is the state behind every problem in this article.
Fabric that feels dry to the hand can still hold a noticeable share of its weight in water, especially thick cotton, seams, waistbands and pockets.
Check the parts that finish last. Doubled fabric at seams, the waistband of jeans, the elastic in socks, the hem corner of a towel, and the middle of anything folded.
Hold a suspect item against the inside of your wrist. Damp fabric reads cold there when it does not read damp to your fingertips.
If anything in the load is questionable, give the whole load another short run rather than folding it and hoping.
Do not fold anything warm and put it straight away either. Let it cool on a surface first, since warm fabric holds moisture you cannot feel while it is still warm.
Airing a house without making it damper
Ventilating in cold weather feels wrong and it is the thing that works.
Cold outdoor air holds very little moisture. Bring it in, let the heating warm it, and it has a great deal of capacity for vapour.
Short and wide beats long and narrow. Open windows on two sides of the house for ten minutes and the air changes completely without cooling the structure down.
Extract at the source. Run the bathroom fan during and after a shower, run the kitchen fan while cooking, and shut internal doors so damp air does not wander through the rest of the house.
A dehumidifier in whichever room the laundry dries in is the direct answer, because it takes water out rather than pushing it somewhere else.
If there is a vented dryer, check that the vent is clear and genuinely going outside. A disconnected or blocked vent puts every litre straight back into the house.
The Vancouver part
The wet season here runs long, months rather than weeks, so indoor drying is the default for a large part of the year instead of an occasional fallback. Any household routine built on a rack in a spare room runs into the ceiling described above sooner or later.
Cool and grey is worse than cold and clear, which surprises people who assume a wet climate is only about rainfall. A crisp bright day, even a freezing one, brings air with real capacity for moisture. A mild overcast day at high humidity brings almost none, and those days arrive in long runs.
Households here also carry more wet outerwear than most places do. Shells, fleeces and work jackets come home soaked from the outside rather than from a machine, and hanging them in a hallway puts the same litres of water into the house air. Give them a spot with ventilation instead of a closed cupboard.
The water here is soft, which matters more than it sounds. Detergent lathers heavily in soft water, so a standard dose leaves more behind in the fibre, and residue in the fibre is exactly what turns stale when a garment dries slowly. Cutting the dose helps the smell problem as much as faster drying does.
Where a load finishes drying
The reliable answer in a wet climate is finishing a load in one go rather than starting it in a machine and hoping a rack will do the rest.
The machines at our self-service laundry on Northeast Vancouver Mall Drive spin hard enough to pull most of the water out before drying even starts, and the water volume and drum size mean a heavy winter load moves freely rather than sitting packed and half soaked.
Our machines and the store are cleaned daily.
Our wash-dry-fold service covers the everyday laundry.
For general guidance, The American Cleaning Institute publishes a laundry basics guide that is a useful cross-check.
The short version
Drying needs three things together, room in the air, warmth and movement, and a wet climate removes the first of them for months at a time. A room full of drying laundry reaches a balance where evaporation simply stops, so a load that has not finished in about a day indoors will not finish at all. Spin as hard as the fabric allows, because every litre the machine removes is a litre that never has to evaporate. Check seams, waistbands and hems before calling anything dry, and never fold something warm straight into a drawer. Ventilate in short bursts with windows on two sides, and extract steam at the source.
WaveMAX Vancouver is at 8109 NE Vancouver Mall Drive, Suite F and G, easy to reach from Vancouver and the surrounding area. If you have a load that will not fit at home, call us at 360-433-9864.