Mold, Algae & Stain Removal

That green film on your siding and those black streaks running down your roof aren't dirt. They're living growth — algae, mold, mildew, and lichen — and they spread every season they're left alone. In Delaware's humidity, the shady north side of a house can go from clean to green in a single summer.

Blasting it with high pressure knocks the color off but leaves the roots behind, so it comes right back, usually within months. We treat it differently. Our soft wash process applies a cleaning solution that kills the growth at the root, then rinses at low pressure that's safe for siding, shingles, and painted surfaces. The stain leaves and stays gone far longer.

What we remove

Green algae and mildew on vinyl and painted siding. Black streaks on roofs, which come from a bacteria called gloeocapsa magma that feeds on your shingles. Moss and lichen on roofs and pavers. Rust, tannin, and organic staining on concrete, brick, and stone. Green film on fences, decks, and outdoor structures.

If the stain is on your roof, our roof cleaning service covers it with a 5-year warranty. If your whole house needs it, our soft wash house washing carries a 1-year warranty. This page's treatments are also how we handle spot problems — one bad wall, one stained walkway, one green fence line.

Safe for your plants and property

Every job includes our plant and property protection package. We soak your landscaping before and after treatment, protect delicate surfaces, and use solutions at the right dilution for each material. A clean house shouldn't cost you a flower bed.

Frequently asked questions

Will the mold and algae come back? Eventually — it's a living organism and Delaware is humid. But because soft washing kills it at the root instead of just stripping the surface, results typically last two to three times longer than pressure washing alone.

Is the treatment safe for pets and kids? Yes. Once the surface is rinsed and dry, treated areas are safe. We'll walk you through timing on the day of service.

Can you remove stains from concrete and driveways? Most organic and rust staining, yes. Some deep-set oil stains are permanent, and we'll tell you honestly on-site what will come out before any work starts.

Ready to get rid of it for good?

Call (302) 290-6508 or request a free quote. Father-and-son owned, fully insured, serving Wilmington, Hockessin, Newark, and surrounding DE and PA towns.