Ventilation for finishing: what EPA says
Why finishes give off vapors, and EPA's lines on airflow and labels.
Disclosure: We may earn a commission if you buy through links on this page. It does not change our guidance. Affiliate Disclosure
What VOCs are
EPA says volatile organic compounds are "emitted as gases from certain solids or liquids," and that they "include a variety of chemicals, some of which may have short- and long-term adverse health effects."
Finishes and solvents
EPA says: "Paints, varnishes and wax all contain organic solvents." EPA says these products "can release organic compounds while you are using them, and, to some degree, when they are stored."
Ventilation
EPA says to "Increase ventilation when using products that emit VOCs" and to "Meet or exceed any label precautions."
If the label says well ventilated
EPA says that if a label says to use the product in a well-ventilated area, "go outdoors or in areas equipped with an exhaust fan to use it." EPA says: "Otherwise, open up windows to provide the maximum amount of outdoor air possible."
Label terms
Terms on a can, such as low VOC, are the maker's label terms. We do not check them or say what they mean for your home.
Oily rags can catch fire
Massachusetts' Department of Fire Services says: "The oils in some paints, stains, and varnishes release heat as they dry. If oily rags and applicators are left in a pile, a box, or the trash, the heat can remain trapped and cause a fire that quickly spreads to nearby combustibles." Follow the label and your local fire officials.
This is general information, not legal or safety advice.
Sources: EPA, Volatile Organic Compounds' Impact on Indoor Air Quality; Massachusetts Department of Fire Services (mass.gov), Disposing of oily rags.
FAQ
General information only. Follow every product label and increase ventilation when you finish, as EPA advises. State fire and health agencies warn that rags used with some oil-based stains and finishes can catch fire on their own: never leave them in a pile, and dry and dispose of them as the label and your local fire officials direct. CPSC says to anchor furniture with drawers, doors, and shelves to the wall. In an emergency, call 911.
Next: where to work
Outdoors or an exhaust fan.
