How Often Should You Wash Your Houston Home's Exterior?

By the Peak Clean team · October 13, 2026

Houston's heat, humidity, and heavy spring pollen are hard on a home's exterior. Algae and mildew grow quickly on shaded siding, roofs pick up dark streaks, and walkways turn slick. Here's a practical guide to how often each part of your home usually needs attention.

Why Houston exteriors get dirty so fast

Warm, wet weather is ideal for algae, mold, and mildew. Add shade from mature trees, sprinklers that hit siding, and pollen that coats everything each spring, and surfaces can look dingy long before they're truly worn out. North-facing walls and shaded corners usually show growth first.

A simple frequency guide

Siding, brick, and stucco: Most Houston-area homes benefit from a soft wash about once a year. Shaded or tree-covered lots may need it more often.
Roof: Clean it when streaks or moss appear rather than on a fixed schedule. Results typically last a couple of years or more depending on shade and moisture.
Driveways, patios, and walkways: About once a year, or sooner if you notice green growth or slippery spots.
Windows: Twice a year works well for many homeowners, such as after spring pollen season and before the holidays.
Gutters: Depends on your trees. Homes with overhanging oaks or pines often need cleaning more than once a year.

Algae-streaked siding on a Houston home before soft washing — Before

Clean white siding on the same Houston home after soft washing — After

Signs it's time

Green, black, or gray streaks on siding or roofing
A chalky or dusty film that comes off on your hand
Dark spots or growth under eaves and around downspouts
Slippery walkways, steps, or patios
Cloudy, spotted windows even after wiping them

Dirt dauber nests and the stains they leave

Mud dirt dauber nests are common under eaves, on porch ceilings, and along brick in Houston. Nests can be removed during cleaning, but they often leave a stain behind, and that staining may not come out completely. Cleaning sooner, before nests build up, gives the best chance of a clean result.

Bundle services to save a trip

Because different surfaces age at different speeds, many homeowners schedule several services in one visit, such as house washing, driveway cleaning, and windows. That keeps the whole exterior looking consistent and saves you scheduling it separately.

Frequently Asked Questions

How often should I have my house soft washed in Houston?

Most Houston-area homes benefit from a wash about once a year. Shaded or tree-covered lots may need it more often.

Can washing too often damage my home?

Soft washing uses low pressure and a cleaning solution, so it is gentle on siding, brick, and stucco. How often you need it depends on how fast growth returns on your property.

Will dirt dauber stains come out?

Nests can be removed, but they may leave staining that does not come out 100%. We will always do our best, and these limits are covered in our terms.