The Pretty Good House Blog: Choosing Healthy Interior Finishes

If you're planning a repaint or renovation, it's worth knowing what's actually in the products you bring into your home. VOCs, or volatile organic compounds, are chemicals that evaporate easily into the air at room temperature. Once airborne, they can react to form smog outdoors or, indoors, cause direct health effects through breathing, eating, or skin contact. The exact cutoff for calling something a VOC is a regulatory line, not a hard scientific one, and it varies by state and by regulator.

Not all VOCs come from obvious sources. Even natural scents, like the smell of an orange peel or raw pine, are VOCs and can bother sensitive people. One builder found a client with multiple chemical sensitivity reacted badly to the terpenes in unfinished pine, even though it's a smell most people find pleasant. The general rule is that repeated, prolonged exposure raises health risk, and sensitivity to these compounds tends to build with more exposure, not less.

Paint is worth special attention because of how much surface area it covers in a typical house, but it's far from the only source. Furniture, carpet, and cleaning products can all give off VOCs too, and it's often the ones with strong smells that are the biggest concern. Choosing low-VOC labeled products is a reasonable starting point when picking interior finishes, though label claims don't tell the whole story about what a material is made of or how it might affect indoor air over time.