Top Signs It's Time to Pressure Wash Your Home or Business

September 17, 2025

Keeping your property clean on the outside is just as important as maintaining the inside. Over time, dirt, mold, and grime build up on siding, concrete, roofs, and walkways—making your home or business look dull, worn out, and even unsafe. Pressure washing is one of the fastest and most effective ways to restore curb appeal, protect surfaces, and create a welcoming environment.

So how do you know when it’s time? Here are the top signs your property is due for a professional pressure wash.

1. Your Siding or Brick Looks Dull, Dirty, or Discolored

If your home or business exterior looks faded, stained, or uneven in color, that’s usually a sign of dirt, pollution, or algae growth. Houston’s humidity makes algae and mildew especially common. A thorough soft wash or pressure wash can instantly restore brightness and give your property that “like-new” look.

2. Black Streaks on the Roof

Those dark streaks aren’t just dirt—they’re actually algae, and they can slowly damage your roof shingles over time. Left untreated, algae, moss, and lichen can shorten the lifespan of your roof. A professional soft wash removes these safely without damaging the shingles.

3. Driveways and Walkways Have Stains

Oil, rust, gum, and tire marks on concrete don’t just look bad—they can also create slippery, unsafe walking areas. Pressure washing lifts these tough stains, leaving your driveway, sidewalks, and parking lots fresh and safe for family, guests, or customers.

4. Mold and Mildew Growth

Green or black spots on siding, decks, or fences are signs of mold and mildew. Not only do they ruin the appearance of your property, but they can also pose health risks and damage wood or vinyl surfaces. Regular washing helps protect both your property and your family’s health.

Rankin Power Tip: Driveway and Walkway Safety Check

Run your hand or shoe across stained concrete. If it feels slick, that’s mildew buildup—and it’s a slip hazard. Time to wash!

5. Your Business Exterior Looks Worn

For business owners, first impressions matter. Dirty storefronts, stained awnings, or grimy parking lots can turn customers away before they even step inside. A professional pressure wash refreshes your building’s appearance, sending the right message to customers and clients.

6. It’s Been Over a Year Since Your Last Wash

Even if you don’t see heavy buildup yet, most properties benefit from an annual pressure washing. Think of it as preventive maintenance—keeping dirt, mildew, and algae from taking hold in the first place.
7. You’re Preparing to Sell or Host Guests

Nothing boosts curb appeal faster than a clean exterior. If you’re putting your home on the market or preparing your business for a big event, pressure washing instantly enhances your property’s value and makes it more inviting.

Rankin Power Tip: Do the Water Test

Spray a small area of your siding or driveway with a garden hose. If the dirt or algae doesn’t budge, it’s time for professional pressure washing.

Protect Your Investment with Professional Pressure Washing

If you notice any of these signs, it’s time to call in the professionals. At Rankin Power Washing, we help Houston homeowners and businesses restore their property’s beauty, extend the life of their exterior surfaces, and create a safe, clean environment.

Author: Jessika Lee