How often should you repaint interior walls?

There is no authoritative repaint schedule, and we are not going to invent one. Interior repainting is driven by how washable the paint is and how much traffic the room takes, not by a number of years. The intervals published around the internet are contractor rules of thumb, not manufacturer guidance, and they are worth treating that way.

Why we will not just give you a number

We looked for one. Sherwin-Williams, Benjamin Moore, PPG, the Painting Contractors Association: none of them publish repaint intervals by room type that we could find. Every source that produced confident numbers was a painting company's blog, quoting other painting companies' blogs.

For the record, the commonly repeated consensus is hallways and stairways every 2 to 3 years, kitchens and bathrooms every 3 to 4, kids' rooms every 2 to 4, and adult bedrooms and formal rooms every 5 to 8. Those figures are not unreasonable and they roughly match what we see. They are also not measurements, so please do not treat them as a specification.

What actually wears out

The useful way to think about this is not time, it is film thickness. In wet scrubbing the coating is thinned by abrasion, a sheen or gloss change appears, deeper layers of the coating get revealed, and eventually the substrate shows through, which is the point of failure (Paint & Coatings Industry, on scrub resistance).

That is why a hallway does not fail evenly. It fails at hand height, at the light switch, and where the vacuum hits the baseboard. Repainting the whole room on a calendar misses the point, and repainting the whole room because of three spots is a waste of money.

Washability is a measurable property

Scrub resistance is tested under ASTM D2486, the standard test method for scrub resistance of wall paints, where a larger number of scrubs indicates a more resistant coating. It depends on pigment volume concentration, the binder, and whether the coating is matte, low sheen, semi-gloss, or high gloss.

This is the practical takeaway. Washability is not marketing language, it is a property you can buy more of at purchase time. Benjamin Moore's own advice is to use caution with flat paint in high-traffic areas that need frequent attention, because stains are harder to remove (Benjamin Moore, choosing a paint finish).

How to get longer between repaints

Four things, in rough order of how much they help. Put a more washable sheen in the rooms that actually get touched. Keep a labeled quart of each color so touch-ups match instead of turning into a full repaint. Clean marks early and gently, before they need scrubbing. And accept that trim, doors, and hallways are on a shorter cycle than bedrooms, and budget them separately rather than repainting everything at once.

Frequently asked questions

So how often should I repaint?

Honestly, when it stops looking right or stops cleaning up, which depends on the room. If you want a planning figure, the common contractor rule of thumb is 2 to 3 years for hallways and 5 to 8 for adult bedrooms, but that is a rule of thumb rather than published guidance from anyone who makes paint.

Can I just wash the walls instead of repainting?

Often yes, and that is exactly what a more washable paint buys you. Be aware that repeated wet scrubbing thins the film and can change the sheen in that spot, so gentle and early beats aggressive and late.

Does a higher sheen really last longer?

It generally cleans better, which is usually what people mean. Scrub resistance is a real tested property and sheen is one of the factors in it. The tradeoff is that higher sheens show surface imperfections more.

Sources

• Paint & Coatings Industry, Scrub Resistance of Latex Paints
• Benjamin Moore, How to Choose a Paint Finish

This guide describes general industry and manufacturer guidance, not a promise about any specific job. Always follow the technical data sheet for the actual product being used.