Grime, mildew and stains build up a little at a time until one day the outside of your property looks years older. Professional exterior mold & mildew removal in Warrenton, VA brings it back, usually in a single visit. You may also hear it called algae removal or mildew washing.
Method and pressure
When to book exterior mold & mildew removal
- Black, green or gray spots and film
- Slippery walkways and decks
- Musty smell near shaded walls
- Growth that returns soon after rinsing
Where the grime comes from
- Shade, humidity and poor air flow
- Organic debris and pollen
- Surfaces that stay damp after rain or sprinklers
Easy upkeep between cleanings
- Improve sun and air flow by trimming plants
- Keep gutters and sprinklers from soaking walls
- Clean small areas with an outdoor mildew cleaner, following the label
Not sure what you're looking at? The free stain identifier and safe pressure guide explain each stain and surface.
Common mistakes to avoid
- Blasting growth off without killing it, so it grows back fast
- Mixing cleaning chemicals, which can release toxic gas
- Damaging plants with runoff
What happens on the day
- Identify surfaces and growth
- Protect plants and fixtures
- Apply a solution that kills the growth
- Rinse at low pressure
- Post-treat where helpful to slow regrowth
This service is for outdoor surfaces. Mold inside the home, in attics or in wall cavities needs a mold remediation specialist, not a pressure washing company.
How much does exterior mold & mildew removal cost?
What moves the price:
- Size: square footage of siding, roof or flatwork
- Condition: heavy growth, old stains and peeling finishes take longer
- Access: number of stories, roof pitch, slopes and how close we can park
- Add-ons: sealing, gutter brightening and other services done in the same trip
These are typical U.S. ranges, not a quote. You get an exact price before any work starts. For a quick estimate, try the pressure washing cost calculator.
Local exterior mold & mildew removal for Warrenton, VA
Humid summers in Virginia grow green algae and black mildew on the shaded sides of homes, especially on vinyl and painted wood. A soft wash kills the growth rather than just knocking it off, so the siding stays clean longer.
Near the coast, salt air leaves a film on siding, windows, screens and railings that dulls finishes and speeds up corrosion on metal. Regular rinsing and washing help protect them.
Spring pollen season in Virginia coats houses, cars, screens and patios in a yellow-green film, and pollen gives mildew something to feed on. Many homeowners book their wash after pollen season ends so the house stays clean longer.
Red clay soil is common in parts of Virginia. Rain splashes it onto the bottom of the siding, walls and walkways, and its iron-rich color can stain light surfaces. It usually needs a dedicated clay or rust cleaner rather than pressure alone.
Crews serve all of Warrenton (ZIP codes 20186, 20187 and 20188), plus New Baltimore (5.2 mi), Bealeton (9.9 mi), Gainesville (11.3 mi) and Linton Hall (12.3 mi). Call (877) 658-5887 for a free quote in Warrenton.
Exterior Mold & Mildew Removal: frequently asked questions
How much does exterior mold & mildew removal cost in Warrenton, VA?
Exterior Mold & Mildew Removal typically costs $250-$700 for typical exterior growth on a home, and usually takes 2-4 hours. The exact price depends on the size and condition, and you get it before any work starts. Call (877) 658-5887 for a free quote.
Do you use high pressure for exterior mold & mildew removal?
Exterior Mold & Mildew Removal is done with soft wash. Low pressure and the right solution remove growth and dirt without damaging the surface, and the growth takes longer to come back.
Is exterior mold & mildew removal the same as algae removal?
Yes. Algae removal or mildew washing are other names for exterior mold & mildew removal. Whatever it's called, we use soft wash and match the pressure and cleaning solution to the surface.
Is exterior mold & mildew removal safe for my plants and pets?
We pre-wet plants and lawns, keep cleaning solutions diluted to what the surface needs, and rinse landscaping again when we finish. Keep pets and children inside until surfaces are rinsed and dry.
How often should I schedule exterior mold & mildew removal?
Every 1-2 years in humid or shaded areas. Shade, nearby trees, humidity and heavy traffic mean more frequent cleaning; sunny, dry spots can go longer. Our free cleaning frequency tool gives a recommendation for your climate.
What if it rains on the day?
Light rain doesn't stop most washing, but heavy rain, high wind, lightning and freezing temperatures do. If the weather isn't right, we reschedule at no charge. Our work is backed by a satisfaction guarantee.