How Often Should Windows Be Cleaned in Mid Missouri?

The short answer

For most homes around Columbia, Rocheport and Jefferson City, two cleanings a year keeps the glass genuinely clear. One in spring once the pollen has finished, and one in autumn after the trees have dropped and before the light gets low.

Those two visits line up with the seasons that dirty glass fastest here, rather than with a calendar that ignores what is actually landing on your windows.

What dirties glass here

Spring pollen is the obvious one, and it sticks. Summer brings sprinkler overspray, which dries into hard water spotting that gets harder to release the longer it sits. Autumn adds field dust and wind blown grit, and winter adds road salt near busier streets.

The pattern matters more than the amount. Glass that is cleaned before mineral spotting bakes in stays easy to clean. Glass that goes years between visits can etch, and at that point no amount of work brings it fully back.

When you need a third visit

Add a visit if you are on or near a gravel road, back onto open fields, run sprinklers that hit the glass, or sit under heavy tree cover that drips sap and drops seed.

Businesses with a glass frontage are a different case entirely. Handled doors and street level display glass usually want a monthly or quarterly rhythm, because the fingerprints show from the pavement.

What a proper clean includes

Glass is only part of it. Frames, sills, tracks and screens hold the grit that ends up back on the pane, so cleaning them is what makes the result last rather than looking good for a fortnight.