How Long After Painting a Room Before You Can Sleep in It

How long after painting a room can you sleep in it? Wait at least one night with standard paint, and sleep there once the smell is faint and the room has been well ventilated. With low-VOC paint and open windows, many people are comfortable the same evening. Babies, pregnant people and anyone with asthma or chemical sensitivity should wait longer. If the smell is still strong, keep ventilating.

How long after painting can you sleep in the room?

There is no single legal number. These are common rules of thumb, and the paint can's label and your own nose are the check.

Paint feels dry to the touch in hours, but it is not fully cured for days or weeks. Emissions are strongest while you are painting and in the first day or two, then they taper off. The smell is your best clue that emissions are still going on. If you can clearly smell paint, keep the windows open and sleep elsewhere.

Why a painted room smells, and can painting a room make you sick?

Paint gives off volatile organic compounds, or VOCs, as it dries. Health Canada lists paint and varnish among the building materials that give off VOCs indoors, and says products labelled low emission or low VOC may release fewer. Low-VOC and zero-VOC paints still smell a little, and tints, primers, caulk and sealers can add emissions of their own.

Yes, fumes can make some people feel unwell. Headache, dizziness, nausea and irritated eyes, nose or throat are the usual signs. Go outside or into fresh air if you notice them. Call a doctor or pharmacist if they continue, and call 911 for severe breathing trouble.

The smell test works as a signal, with one limit. A room with no smell is a good sign, but low-odour paint does not mean zero emissions, so keep the ventilation going and give sensitive people extra time.

How to ventilate a freshly painted bedroom

Fresh air does more than any product that claims to remove the smell.

1. Create a through-flow. Open a window and put a box fan in it, blowing outward. Open another window or door elsewhere in the house a little so fresh air flows in.
2. Close the bedroom door. That keeps fumes out of the rest of the house.
3. Run exhaust fans. A bathroom fan or range hood helps pull air through the house.
4. Use the HRV. If you have a heat recovery ventilator, run it on its highest setting. Natural Resources Canada describes these units as bringing fresh outdoor air in and removing stale air.
5. Remove the sources. Take sealed tins, wet rollers, rags and drop cloths out of the room.
6. Protect the bedding. Soft furnishings absorb odour. Keep pillows, bedding and clothes out of the room, or cover them while you paint.

Keep this up for the first day or two, including overnight while nobody sleeps in the room. Skip candles and air fresheners. They add smell and do not remove it, and an open flame has no place near solvent-based paint.

Painting a bedroom in an Ontario winter

In January it is tempting to keep the windows shut. That traps fumes and slows drying, because cold or damp air dries paint slowly. The paint label gives a minimum temperature, and that is often around 10 degrees C, so do not let the room fall below it.

A winter routine that works:

• Paint in the morning. Finish the last coat by early afternoon, so the room ventilates through the evening.
• Ventilate hard, then warm up. Run the window fan with the door closed and the heat on in the rest of the house. Open windows wider for 10 to 15 minutes at a time, then close them to let the room warm.
• Keep a window open a crack overnight if you can do it safely, and sleep in another room for the first night or two.
• Avoid fuel-burning heaters and open flames near wet solvent-based paint.

If you cannot ventilate properly, sleep somewhere else until the smell has faded. See the guide to interior painting in winter for more on cold-weather jobs.

How room size, paint type and coats change the wait

Think about how much fresh paint sits in how much air. A small bedroom with two wall coats, a ceiling coat and painted trim holds a lot of drying paint in a small space. A large room dilutes better. Ventilation matters more than size, so a one-window bedroom needs a fan.

• Paint type. Low-VOC latex is gentler than standard latex. Oil-based paints, solvent primers and lacquers give off stronger fumes and take longer to clear. Read the low-VOC paint guide for how the labels differ.
• Coats. Each coat adds emissions. Follow the label's recoat time. The drying and recoat times guide explains why.
• Application. Spraying puts more fine mist and fumes into the air than a brush or roller. Keep people out for longer.
• Extras. Closets, ceilings and trim all count towards the total.

Babies, pregnancy, asthma and pets: how long to wait

Health Canada's advice for DIY projects is to keep children, pregnant people and vulnerable adults away from work areas, and to open windows or use exhaust fans during and after the project. Treat a nursery the same way.

• Babies. Paint the nursery as far ahead of the birth as you can, with low-VOC paint, and ventilate until the smell is gone. There is no official cut-off to quote, so ask your doctor or paediatrician if you are unsure.
• Pregnancy. Stay out of the room while it is painted and while it airs out.
• Asthma, allergies and sensitivity. Wait longer, keep the door closed and ask your doctor if you are worried.
• Pets. Birds are very sensitive to fumes, so ask a vet and keep them in another, well-aired part of the house. See painting with kids and pets at home.

When a painter can make the wait shorter

A painter can plan the work so the bedroom is done early in the day, bring fans, and choose paint that suits a sleeping room. Tell them up front if the room is a nursery, if someone has asthma or if you must sleep there that night. D&D Interior Services paints interiors across Kitchener-Waterloo, Cambridge and Guelph, with a free written quote. See the interior painting page. If you are planning colours and prep as well, the bedroom painting guide is a good next read.

Sleeping in a freshly painted room: your questions

Can you paint a room and sleep in it the same day?

With low-VOC paint, strong ventilation and a faint smell, many healthy adults do. With standard paint, give the room at least one night. If you can still clearly smell paint, or you have asthma, are pregnant or sleep with a baby, sleep in another room until the smell has gone.

Is it safe to sleep in a freshly painted room?

Usually once the room is well ventilated and the smell is faint. Paint gives off VOCs as it dries, and they are strongest in the first day or two. Sleeping there too early can cause headaches or irritation in some people, so ventilate first and let your nose guide you.

Can painting a room make you sick?

It can, mostly through fumes in a closed room. Headache, dizziness, nausea and irritated eyes, nose or throat are common. Move into fresh air and ventilate. Contact a doctor if symptoms continue, and call 911 for severe breathing trouble. Low-VOC paint and open windows lower the risk.

How long after painting a room is it safe for a baby?

There is no official number to quote. Paint the nursery well before the baby arrives, use low-VOC paint, and ventilate until you cannot smell the paint at all. Health Canada advises keeping children away from work areas, and your doctor or paediatrician can advise on your situation.

How can I get the paint smell out of a bedroom faster?

Fresh air is what works. Run a fan in an open window blowing out, keep the door closed, use exhaust fans and an HRV if you have one, and take out wet rollers, tins and rags. Keep bedding out of the room and skip air fresheners, which only mask the smell.

Devon Moore, Operations Lead Co-Founder & Operations Lead — D&D Interior Services

Devon Moore is the co-founder and Operations Lead at D&D Interior Services, delivering kitchen renovations, bathroom renovations, flooring, and interior upgrades across Waterloo Region.