Author: Home Exterior Lab

The Home Exterior Lab editorial team publishes practical, research-backed guides on gutters, roofing, siding, and exterior drainage. Every article is built from manufacturer specs, building codes, and university extension research, then written in plain language homeowners can act on.

House washing frequency is simply the interval between cleanings of your home’s exterior surfaces, and getting that interval right is what keeps dirt, algae, and pollutants from settling in long enough to stain or damage the siding. For most homes, the answer is once a year. That single yearly wash handles the slow buildup of dust, pollen, and organic growth before any of it gets a real foothold. But “once a year” is a starting point, not a law. Your siding material, how much shade and tree cover you have, and your local climate can all push that schedule shorter…

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