Summer in the Ozarks brings the kind of heat and humidity that exterior surfaces really feel. According to the EPA, mold and similar organisms can begin to grow once relative humidity climbs above 60 percent, a threshold our region crosses often through the warmer months.
That moisture, combined with shade and slow-drying surfaces, creates ideal conditions for algae and mildew to take hold. A soft wash uses low-pressure water and a specialized cleaning solution to gently remove these organisms without the risk that high-pressure washing can pose to siding, paint, and trim.
Here are 7 signs it might be time to schedule one.
1. Dark Streaks on Your Roof
Those vertical black or gray streaks running down your shingles may look like dirt, but they’re not. They’re a type of algae that feeds on the limestone filler in asphalt shingles and spreads along water runoff paths, typically starting near the ridge.
2. A Greenish Film on North-Facing Walls
The side of the house that gets the least sun, often the north-facing wall, holds moisture longer after rain or morning dew, exactly what algae and mildew need to establish themselves. A soft wash service can clear it without forcing water behind your siding the way a pressure washer can.
3. Grime That Builds Back Within Days of Rain
If your siding looks streaky or dingy again shortly after a storm, the rain isn’t actually cleaning anything. It’s rinsing away surface dust while leaving the organic growth underneath untouched.
4. A Musty Smell Near Vents or Foundation Walls
A persistent musty odor close to crawl space vents or foundation areas often points to trapped moisture and organic buildup nearby, the kind a soft wash is designed to address.
5. Slick Spots on Walkways and Patios
When algae and mildew take hold on concrete or pavers, they create a thin, slick film that becomes genuinely dangerous once wet. Routine cleaning, covered in our post on the benefits of seasonal roof and exterior cleaning, helps catch this before it becomes a fall hazard.
6. Discolored Window Screens and Trim
Screens and trim pick up the same airborne spores as your siding. Because they’re easy to overlook during a quick glance at the house, buildup here often goes unnoticed until it’s fairly significant.
7. A Roof or Siding That Looks Older Than It Is
Years of untreated algae and mildew growth can make a home look prematurely aged, dulling its color and texture even when the materials underneath are still in solid shape. Regular soft washing helps preserve curb appeal and may extend the life of exterior finishes by removing contaminants before they cause lasting discoloration.
A soft wash addresses the root causes of these issues rather than just the surface symptoms, and getting it done in summer means the results hold up through the season’s heat and humidity.
If you’re noticing any of these signs, Patriot Exteriors proudly serves Branson, Springfield, Ozark, and the surrounding area. Reach out today to schedule a soft wash before summer conditions make it worse.
