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Learn how to dispose of paint safely to avoid polluting the environment and getting fined for improper paint disposal

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Learning how to dispose of paint correctly is essential for anyone who is DIY painting their home, renovating, or even just painting furniture or a deck during the summer. The trouble with paint is that it’s often left unfinished in the can. Before long, you have a garage full of unfinished cans of paint and don’t really know what to do with it. Do you chuck it in your household trash? Do you need to take it to some kind of a special recycling center? 

So, whether you have a whole collection of the best paints for furniture, or you’ve repainted all of your walls and still have some leftover, here’s how to dispose of paint the right way, according to a painting professional.  

Mason jar DIY ideas have been around for a while now, but did you know that you can store your leftover paint in them? Transferring your paint into a mason jar means that you’ll be able to dispose of the paint can by recycling it, but you can reuse your paint at a future point and store it in a much nicer container. Paige NeJame is the owner of Certa Pro Painters (opens in new tab) , a large painting company near Boston and recommends saving any paint you have left over ‘for touch-ups’ - we like mason jars because they’re easy to store, pretty and simple to pull out of a cabinet if you have a scratch or ding you need to paint.’ 

Walls and furniture do get scratched, so it’s always a good idea to have some of the same paint you’ve used ready for small repairs, rather than having to buy a whole new can you won’t finish. Storing your paint in mason jars will also mean you can keep them in your utility room, displayed neatly on a shelf. 

This leads us to the next point. It’s much easier to dispose of an empty can of paint, so buying as close to the exact amount you’ll need as possible is always the best course of action. NeJame advises that ‘you will need about 1 gallon of paint for about 350 square feet per coat of paint. If you need 2 coats, you’ll need double that.’ Doing the math on how much paint you’ll need ‘upfront ensures that you have very little paint left over.’ 

Top tip: if you're painting your whole house, go for the largest can you can get, usually a five-gallon. That way, you'll have one can to recycle afterward. 

As with most things, the paint you’re about to throw away may be useful to someone else, and many people will happily buy a half-used can of paint for their own DIY needs at a reduced price. NeJame’s top tip for disposing of paint this way is to donate it to Habitat for Humanity (opens in new tab) stores -  ‘the stores are called “ReStore’’’ - they ‘will take your old paint and resell it to people to raise money for Habitat for Humanity.’

If you’re in the UK, call up your local B&Q branch to check if they’ll accept your leftover paint. B&Q run a project with a charity called Community RePaint (opens in new tab) and accept donations from the public. If you can’t take the paint to a B&Q near you, check with your local Household Waste Recycling Centres, as many also accept paint donations that then go to Community RePaint. 

Finally, you can arrange for someone who needs the paint to pick it up from you via Freecycle.

If you can’t find a suitable new home for your unused paint and want to dispose of it, do not put your paint in the trash or pour it down the drain. Instead, you will need to either take your paint to a recycling center or arrange for a special collection of your paint (you’ll need to check with your local authority if they do those and how to arrange for one). 

Recycling facilities do not accept liquid waste, so you will need to pour the paint out of the can (which can then be recycled) and harden it. Ne Jame advises that ‘ If you need to dry it out, mix some kitty litter, wood shavings or shredded paper in the bucket, The paint will solidify/dry out in about 10 minutes.’

Top tip: ‘To recycle a metal paint can it can have a little bit of dried paint (about ½”), and you can put it in with the metal recycling.’

Some paint retailers will also accept your leftover paint for recycling. Check Lowes (opens in new tab) in the US and B&Q in the UK. 

Yes. Paint is classed as hazardous waste for two reasons. The first is that the VOCs and heavy metals contained in paint are hazardous to the environment. For this reason, paint must never come into direct contact with soil or water sources. The second is that oil-based paint is flammable and poses a fire risk at landfills. 

Yes. In both the US and UK, illegal dumping/illegal waste disposal are offenses subject to fines and, in extreme cases with repeat offending, even subject to felony charges. You have to dispose of paint correctly to avoid these unpleasant consequences. Fortunately, as we’ve seen, there are quite a few options for disposing of leftover paint safely and correctly – the fact that you can help charities with your paint donations is even better. 

Anna is Content Editor at Real Homes. She moved to the world of interiors from academic research in the field of English Literature and photography. She is the author of London Writing of the 1930s and has a passion for contemporary home decor and gardening. At Real Homes, she covers a range of topics, from practical advice to interior and garden design. 

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