How Often Should You Pressure Wash Your Home in Houston’s Climate?

September 15. 2025

When it comes to maintaining your home in Houston, one question we hear all the time is: “How often should I pressure wash my house?” The answer depends on Houston’s unique climate, and knowing the right schedule can help protect your biggest investment — your home.

Houston’s Climate: Hot, Humid, and Mold-Friendly

Houston is known for it's high humidity climate, which creates the perfect breeding ground for algae, mold, and mildew. Our Houston climate also experiences excess rainfall from hurricanes to light showers. Therefore water stains and dirt buildup on driveways, siding and roofs is inevitable. Along with the Texas climate comes pollen & dust which not only causes seasonal allergies but seasonal allergens that cling to surfaces. The strong sun in the south east of Texas can fade paint and cause grime to stick.

How Often Should You Pressure Wash?

A general rule of thumb is every 6-12 months for most homes. If you live in a heavily shaded area we would suggest every 6 months as shade creates more moisture which causes faster mold growth. And for your sidewalks, driveways and patios? At least once a year or every 6 months if you notice oil stains, algae or mildew more often. Your roof takes the brunt of Houston's constant sun exposure. When it comes to your roof it is important to know that traditional high pressure washing is too harsh, so to protect your shingles and granules we use a soft wash instead. We suggest to book your roof wash every 2-3 years.

Rankin Power Tip: Before Painting or Staining, Always Wash First

If you're planning on painting your any part of your home exterior or stain a fence or deck, pressure washing first is crucial. Overtime, surfaces collect dust, dirt, pollen, mildew that can prevent new paint or stain from bonding properly. If you skip the wash, your fresh coat might start peeling, cracking, or fading much sooner than expected.

Why Regular Washing Matters

Your Houston home is one of the biggest investments and Houston's harsh climate can be tough on it. Regular pressure washing prevents long-term damage from algae, mold, and mildew that eat away at paint, siding, wood, and even roofing. By keeping these contaminants under control, you extend the life of your home’s exterior surfaces. A freshly cleaned home simply looks better and boosts your curb appeal. Dirt, pollen, and stains dull your home’s appearance, while algae streaks can make it look older than it really is. With consistent washing, your property stays bright, inviting, and well-maintained — whether you’re welcoming guests or preparing to sell. Pressure washing does more than boost your burb appeal. It also removes allergens like mold spores and allergens that stick to your home's siding, patios, and driveways. Pressure washing also eliminates slippery algae and mildew on driveways, sidewalks, and decks, making your outdoor spaces safer for family and visitors.. Consistent washing also saves you money, neglecting buildup often leads to costly repairs. Algae and mildew can cause permanent staining, wood rot, or even roofing damage. By investing in regular cleanings, you’re avoiding expensive fixes later so spending a little now saves a lot in the long run.

Rankin Power Tip: Stay Proactive

In Houston, it’s better to stay proactive. Waiting until your siding or driveway is covered in green algae not only looks bad but can also cause permanent staining. By setting up a regular maintenance schedule with us, you keep your home protected year-round.

Author: Jessika Lee