Paint brush
The rare cleaning job where the hardest question is not how to get it clean but where the dirty water is allowed to go — and the answer is set locally.
Precautions
- Dispose of responsibly
- Ventilate the area
- Wear gloves
- Keep away from children and pets
In detail
Cleaning a paint brush is two problems, and the technique is the easier one. What kind of paint it is decides everything: water-based emulsion is designed to wash out with soap and water, while oil-based paint will not come out with water at all and needs a solvent. Both start with the step most often skipped — reclaim the paint still in the tool by squeezing the bristles against the side of the tin, because everything not removed there becomes waste later. The harder problem is the rinse water, and the distinction that matters is one most people have never been told. A household sink drains to the sanitary sewer and on to treatment; a STORM DRAIN outside runs untreated straight to a watercourse. Latex rinse water in the sink has minimal impact on the sewer, though it wastes a lot of water; the same water down a storm drain, or hosed across a yard, is not treated at all. Septic systems are built for human waste and paper and are not made to handle paint. Disposal then splits sharply. Dried water-based solids can go in the bin, while oil-based waste and used solvent are household hazardous waste. What facility takes them, and what it accepts, is a local matter.
Related
- Paint brush is commonly affected by Emulsion paint
Hacks and claims involving this
- Rinsing paint brushes outside with a hose Does not work
Sources for this page
Sources
Waterwise: Cleaning Painting Equipment After Household Use
Clemson University Cooperative Extension, Home & Garden Information Center, 2020 · Credible secondary source
Relied on for: That water-based paint washes out with soap and water while oil-based paint requires a solvent, that paint should be reclaimed from the tool first, that rinse water must never enter a storm drain, that latex rinse water may go to a household sink but not a septic system, that settling recovers solids and solvent, and that oil-based waste and solvent are household hazardous waste. (states this directly)
Verification: a person has read the passage relied on.
Read on — The latex and oil-based sections and the disposal guidance. Authors: Tancey Cullum Belken, Ellen Sturup Comeau, Kimberly C. Morganello. Supports the claim as stated.
What CleaningHQ cannot answer yet
These are recorded questions about this subject that we have not yet researched to a standard we would publish.
- Reshaping, drying and storing brushes after cleaning
- Whether wrapping a loaded brush avoids cleaning it between coats
Last reviewed by a person on .