My windows get filthy so fast on the outside - is there something wrong with them?

Dirty windows are usually an environmental issue rather than a window problem. Most window dirt comes from external factors like pollen, dust, vehicle exhaust, and weather patterns rather than defects in the windows themselves.

Common causes of rapidly dirty windows include living near busy roads where vehicle exhaust and road dust settle on glass, seasonal pollen from trees and plants (especially heavy in Ottawa's spring months), construction or landscaping work nearby that kicks up dust, and poor drainage around your home that splashes mud onto lower windows during rain. Windows facing prevailing winds also tend to collect more airborne particles.

Ottawa's climate contributes significantly to window dirt accumulation. Our spring pollen season is particularly intense, and winter road salt can leave residue that attracts more dirt. The freeze-thaw cycles common here can also cause soil and debris to splash onto windows during melting periods.

Check your window surroundings for specific dirt sources. Overhanging trees drop sap, leaves, and provide surfaces for birds that can soil windows. Sprinkler systems hitting windows leave mineral deposits that attract more dirt. If you have older windows with deteriorating caulking or weatherstripping, gaps might collect dirt that then washes down the glass during rain.

The windows themselves are likely fine unless you notice issues like condensation between glass panes (indicating seal failure), difficulty opening or closing, or drafts. Modern windows with quality seals and proper installation shouldn't contribute to dirt accumulation. However, if your windows are very old, upgrading to new energy-efficient windows with better seals and easier-to-clean features might reduce maintenance needs.

For a read on whether your windows need replacing or it's purely environmental, request a free quote through Ottawa Window Pros and have an installer look at them.