Window Washing Guide for Oregon

Oregon's Grey Season and Your Windows

Oregon gets roughly 144 sunny days per year — about 60% less than the national average. Every ray of natural light that makes it into your home matters. Dirty windows can reduce natural light by 10–20%, making an already grey interior feel darker and more closed-in.

What Builds Up on Oregon Windows

• Pollen: Spring pollen season coats every surface, including windows.
• Hard water deposits: Oregon's water contains minerals that leave white, chalky residue on glass after repeated washing and drying cycles.
• Mildew: High humidity and moisture create mildew growth on window frames and glass, especially on north-facing windows.
• Tree sap and bird droppings: Homes near mature trees accumulate these quickly.

Interior vs. Exterior: Why Both Matter

Exterior windows face the elements directly — rain, pollen, and debris. They should be cleaned at least twice per year, ideally in spring and fall.

Interior windows accumulate dust, cooking residue (kitchen), and condensation buildup. Clean these seasonally for best results.

Professional vs. DIY

For ground-floor windows, DIY with a squeegee and vinegar solution works well. For second-story or hard-to-reach windows, professional service is safer and faster. On Top Home Services includes window washing as an add-on to house wash services.

The Impact

Clean windows brighten your home, improve your view, and protect the glass and frame from long-term buildup damage. In Oregon's limited-sun climate, it's one of the simplest improvements you can make to your home's livability.