If you live in the 19810 zip code, Brandywine Hundred, Sharpley, Liftwood, or anywhere along the Silverside Road corridor, you already know the drill. By late May the north-facing side of your house starts going green. By July it looks like something grew there on purpose. That green and gray film is a combination of green algae, mildew, and airborne pollen that sticks to vinyl, aluminum, stucco, and fiber cement siding in the humid Mid-Atlantic air. It does not come off with a garden hose, and scrubbing it by hand just spreads the spores around.
True Blue Pro Wash serves Brandywine Hundred and the rest of Wilmington with professional soft washing, a low-pressure application of biodegradable cleaning solution that kills algae and mildew at the root rather than blasting it loose with raw pressure. The difference matters. High pressure on vinyl siding can force water behind panels and into wall cavities, which trades one problem for a worse one. Soft washing treats the surface the right way and rinses clean without gouging caulk joints or cracking older stucco.
Why Brandywine Hundred Siding Gets So Dirty So Fast
The Brandywine Creek valley funnels humid air right into northern Wilmington every summer. Add the mature tree canopy that shades so many of the neighborhoods off Foulk Road and Shipley Road, and you have the perfect recipe for biological growth. North-facing walls dry slowly, which means algae spores that land on your siding have more than enough moisture to get established before the afternoon sun can bake them off. By the time you notice the green streaking down from your fascia or the gray crust along your foundation, it has likely been growing for weeks.
Pollen season compounds the problem. Delaware sees heavy oak and maple pollen in April and May, and that organic material settles into every horizontal surface and textured siding panel. Once it breaks down it feeds the algae already looking for a foothold. The result is a layered buildup that looks bad and, left long enough, can begin to degrade painted surfaces and wood trim.
What the Soft Washing Process Looks Like
When a True Blue Pro Wash crew arrives at your Brandywine Hundred home, the first step is a walk-around to note any open windows, outdoor outlets, potted plants, or delicate landscaping that needs to be protected or moved. We wet down nearby shrubs before we start and rinse them again when we finish. From there the process is straightforward.
- Pre-rinse loose debris from all surfaces with low pressure water
- Apply biodegradable soft wash solution to siding, soffits, and fascia
- Allow dwell time so the solution kills algae and mildew at the root
- Rinse thoroughly from top to bottom so runoff carries contamination away from the foundation
- Spot-treat any stubborn staining around downspout outlets or window frames
- Final rinse of all landscaping and hardscape in the work zone
The whole job on a typical two-story colonial in the Sharpley or Liftwood neighborhoods takes two to three hours. The siding dries within the hour on a warm day, and the results are immediate. Most customers in the 19810 zip code tell us it looks like a fresh coat of paint without the cost or the prep work.
Other Surfaces We Clean on the Same Visit
Most Brandywine Hundred homes have more than just dirty siding. While the crew is already on-site we can address the concrete driveway, front sidewalk, a wood deck or vinyl fence, or the gutter exteriors showing those familiar black tiger-stripe stains. Bundling services on one visit saves mobilization time and usually saves you money compared to scheduling each job separately. If you have not had your gutters cleaned since last fall, ask about adding that to the ticket as well. The trees along the Brandywine Hundred corridor drop enough oak leaves and helicopter seeds to pack gutters solid by mid-November.
How Often Should You Wash Your Home's Exterior in Wilmington?
For most homes in the 19810 zip code, once a year is the right interval. The best timing is late spring after pollen season wraps up, or early fall before leaves start dropping. Either window gives you a clean exterior heading into the season that follows. Homes with heavy tree coverage, those on lower lots that collect runoff, or any property with a north-facing elevation that never gets direct sun may benefit from cleaning every ten to twelve months rather than waiting a full year and a half or two years between jobs.
If you bought a home in Brandywine Hundred and have no idea when it was last cleaned, that is the most common situation we run into. A lot of homes in the older sections off Foulk and Silverside have not been professionally washed in years, and the accumulated grime has had time to work its way into siding texture and wood trim. Those jobs take a bit more time but the results are just as dramatic. Call True Blue Pro Wash at (302) 757-9755 and we will give you an honest assessment and a free quote.
Freeze-Thaw Damage and Why Fall Cleaning Matters
Delaware winters bring repeated freeze-thaw cycles that are hard on exterior surfaces. Any organic growth sitting on siding, brick, or painted wood when temperatures drop has a chance to work its way deeper into pores and seams as ice forms and expands. Cleaning in October or early November removes that biological material before winter locks it in. It also gives you a clear look at any caulk failures or paint peeling that should be addressed before moisture gets behind the surface. A clean house exterior in the fall is simply easier to inspect and easier to maintain.
True Blue Pro Wash Serves All of New Castle County
Our crew is local. We work in Brandywine Hundred and across all of Wilmington every week, and we also serve Newark (19711, 19713), Hockessin (19707), Bear (19701), Middletown (19709), New Castle (19720), and the rest of New Castle County. If you are in Chadds Ford or Kennett Square, Pennsylvania, or across the river in Penns Grove or Pennsville, New Jersey, we cover those areas too. One call to (302) 757-9755 gets you a straight answer on scheduling and pricing.
Frequently Asked Questions
Will soft washing damage my vinyl siding or painted wood trim?
No. Soft washing uses low pressure, well below what a standard garden hose nozzle produces on its jet setting. The cleaning solution does the work, not the pressure. It is safe on vinyl, aluminum, fiber cement, stucco, and painted wood. We wet down and rinse nearby landscaping before and after to protect plants from the solution.
How long does house washing take for a typical Brandywine Hundred home?
Most two-story homes in the 19810 zip code take two to three hours from setup to final rinse. Larger homes, heavily soiled siding, or add-on services like driveway or deck cleaning will extend that. We give you an accurate time estimate when we quote the job.
Does the green algae come back quickly after cleaning?
With soft washing the algae is killed at the root, so regrowth is much slower than if you just pressure-rinsed the surface. Most homes in Brandywine Hundred stay clean for twelve to eighteen months. Heavy shade and north-facing walls may see new growth in as little as ten months, which is why some customers in the 19810 zip code prefer an annual maintenance schedule.
Do I need to be home when you wash the house?
You do not have to be present as long as we have access to an outdoor water spigot and any gates are unlocked or left open. We ask that windows be closed and outdoor items that cannot get wet be moved away from the house before we arrive. We will confirm all of that when we schedule.
Can you clean the roof at the same time as the house siding?
Yes. Roof soft washing and house washing are our most commonly bundled services. If your shingles have the black streaking caused by Gloeocapsa Magma algae, combining both services on the same visit is the most cost-effective option. Ask about the bundle when you call (302) 757-9755.
Do you serve zip codes other than 19810 in Wilmington?
We cover all of Wilmington, including 19801, 19805, 19806, and 19807, as well as all of New Castle County. We also serve West Chester and Chadds Ford in Pennsylvania and Penns Grove, Pennsville, and Salem in New Jersey. Call us at (302) 757-9755 to confirm service availability for your address.