How often should you wash your house?

Montgomery County presents a unique challenge for homeowners. Situated just north of Houston, the area combines intense UV exposure, high year-round humidity, some of the heaviest pine and oak pollen in Texas, and frequent storm systems pushing up from the Gulf Coast.

The wooded, heavily-treed nature of much of Montgomery County means homes sit in shade more often, which keeps surfaces damp longer and accelerates mold and algae growth on siding, roofs, and driveways. Most homes in this area need to be washed more frequently than the Texas average.

There's no single answer that fits every home. Frequency depends on where in Montgomery County you live, what surrounds your property, and what your exterior is made of.

Spring (March – May) — Most Important Wash: Pine, oak, and cedar pollen blanket every surface. A thorough wash after pollen season is essential.

Summer (June – August) — Monitor for Mold & Algae: High heat and humidity create perfect conditions for mold and algae on shaded surfaces.

Fall (September – November) — Pre-Winter Clean: Remove summer buildup before it gets trapped under winter moisture.

Winter (December – February) — Low Activity, But Stay Alert: Watch for tannins from pine trees deposited by winter rain.

If you're not on a regular schedule, your home will usually tell you when it's overdue. Watch for these warning signs:

Many homeowners focus entirely on siding and driveways and forget about the largest surface on their home — the roof. In Montgomery County, roofs are especially vulnerable to Gloeocapsa Magma algae.

Left untreated, this algae feeds on the limestone filler in asphalt shingles, breaking them down from the inside. Most roofing manufacturers recommend cleaning every 1–2 years.

For most homeowners in The Woodlands, Conroe, Magnolia, Tomball, and Spring, twice a year is the sweet spot. Think of house washing the same way you think of an oil change — regular cleaning is always cheaper than repairs.