Short answer: move air through the room and keep it warm. Open windows on opposite sides, run bathroom and kitchen fans, set your HRV to boost if you have one, and keep the room above 10°C so the paint cures. With modern low-odour paint, most smell is gone in one to three days.
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Most interior painting in Vancouver happens between October and April, when the windows are shut and the air is damp. That is exactly when paint smell lingers. Here is what actually works.
Why it smells - and why it lasts longer here
The smell is the solvent leaving the paint as it dries and cures. Water-based paints release mostly water plus a small amount of other compounds. Cold, humid air slows evaporation, so a room painted on a rainy November day dries slower and smells longer than the same room in July.
What works
- Cross-ventilate. Two openings beat one. Crack a window at each end of the suite and close doors to the rest of the house.
- Use the fans you already have. Bathroom and range-hood fans pull air out. Run them for the first day or two.
- HRV on boost. Many newer Vancouver homes and condos have a heat recovery ventilator. Boost mode brings in fresh air without dumping all the heat.
- Keep it warm. Paint cures better above 10°C. Leave the heat on in the painted room, even if you are not using it.
- Run the furnace fan with a clean filter if you have forced air.
- Activated charcoal in open trays helps with the last bit of smell. Bowls of baking soda or onions do very little.
Condos and townhomes
In a strata you share air with your neighbours. Let them know when work is happening, keep the suite door closed, and use your own exhaust fans rather than airing into the hallway. Many strata rules also set working hours for trades.
Products make the biggest difference
Most of our interior walls and ceilings are done in low-odour water-based lines such as Benjamin Moore Regal or Sherwin-Williams Duration Matte. Bathrooms and other wet rooms are different: we use a pre-catalyzed epoxy there because it stands up to moisture, and it smells stronger. If you are sensitive to smell, plan to be out for the day when the bathroom is done. Cabinets get a waterborne lacquer, which is much milder than old solvent lacquers.
What does not work
- Closing the room up and spraying air freshener - it just adds a second smell.
- Painting cold. A room at 8°C will smell for days.
- Putting leftover paint down the drain or in the garbage.
Leftover paint in BC
BC has a free paint recycling program run by Product Care. Depots take household paint, primers and stains in labelled cans, with the lid on if there is paint left. Most depots also take empty paint cans. Keep one labelled can of each colour for touch-ups and recycle the rest.
Frequently asked questions
How long does paint smell last?
With low-odour water-based paint and good airflow, usually one to three days. Oil-based or epoxy products take longer.
Is it safe to sleep in a freshly painted room?
With low-odour water-based paint and the window cracked, most people sleep in the room the next night. With babies, people with breathing problems, or epoxy products, wait longer.
Does a fan help paint dry faster?
Moving air helps the smell clear. Do not point a fan straight at wet paint - it can blow dust onto the surface.
Why does my house still smell weeks later?
Usually something besides the walls - a can left open, a solvent-based primer, or paint applied too thick in cold conditions.
