If you live in Hockessin or Greenville, zip codes 19707 and the surrounding Brandywine Valley corridors, you already know how fast wood goes from clean to coated. A deck that looked great in April is showing green algae by July. A fence that was pressure treated five years ago is now gray, streaked, and fuzzy on the north-facing boards. That's not just cosmetic. Mold and algae hold moisture against the wood fibers, speeding up the rot cycle and shortening the life of the structure. True Blue Pro Wash handles deck and fence cleaning throughout this area, using a low-pressure soft wash process that's safe for wood and effective against the biological growth that Mid-Atlantic humidity keeps feeding.
Why Wood Gets So Dirty So Fast in Hockessin and Greenville
Hockessin sits in a valley. Greenville backs up against the Brandywine Creek corridor. Both areas get significant tree canopy, which means shade, consistent moisture, and heavy pollen loads from spring through early summer. Those conditions create the perfect feeding ground for Gloeocapsa magma, the same cyanobacteria that leaves black streaks on roofs, as well as the green algae and mildew you see crawling up fence boards and spreading across deck surfaces. Add in Delaware's freeze-thaw winters, where water gets into small cracks in the wood, expands, and opens things up further, and you have a recipe for wood that needs serious attention every couple of years at minimum.
Our Deck and Fence Cleaning Process
We do not blast wood with a pressure washer set at full bore. High pressure fuzzes out the grain, drives water deep into the structure, and leaves washboard marks that are obvious after the wood dries. Instead, we use a soft wash approach: a diluted, biodegradable cleaning solution applied at low pressure to dwell on the surface and break down the biological growth at the root level. After the dwell time, we rinse at a controlled, wood-safe pressure. The result is a clean surface without raised grain or surface damage.
What We Clean on Decks
- Deck boards, including gaps between boards where mold and debris accumulate
- Railings and balusters, both horizontal and vertical surfaces
- Stair stringers and treads, which collect moisture and algae faster than the main deck field
- Fascia boards and rim joists where visible
- Pergola and overhead structure surfaces where applicable
What We Clean on Fences
- Privacy fence boards, especially north-facing and shade-side panels that stay damp
- Picket fences with ornamental detail that traps pollen and organic debris
- Fence caps and rails where water pools and accelerates mold growth
- Posts at ground level where soil contact and moisture run high
Neighborhoods and Roads We Regularly Service in 19707
We work throughout the Hockessin village area, along Pike Creek Road, out toward Brackenville Road, and into the larger-lot communities that border Greenville and Centreville. Homes on wooded lots off Yorklyn Road and along the Brandywine Creek side tend to be the worst for mildew because of the low light and consistent ground moisture. We also serve neighborhoods closer to the Hockessin Athletic Club and the Route 41 corridor. If you are not sure whether your address falls in our service zone, just call us at (302) 757-9755 and we will tell you straight.
When to Schedule Deck and Fence Cleaning
The best window in New Castle County is late spring before the heaviest humidity sets in, or early fall before temperatures drop below 50 degrees. Cleaning solution works better above 50 degrees F, and fall gives wood time to dry fully before winter freeze-thaw cycles begin. That said, we do work through summer, we just plan jobs for cooler morning hours when we can. If you are planning to stain or seal your deck, cleaning is a required first step. We can coordinate timing so the wood has adequate drying time before your stain contractor arrives. We do not apply stain or sealant ourselves, but we are happy to work around your finishing schedule.
Signs Your Deck or Fence Needs Cleaning Now
- Green or black discoloration on any wood surface, especially the north-facing side
- A slippery or slimy feel underfoot on deck boards
- Gray, weathered appearance across previously brown or natural wood
- Pollen and debris packed into the gaps between boards
- Staining prep, your stain contractor has told you the surface needs cleaning first
- It has been two or more years since the last cleaning
What True Blue Pro Wash Does Not Do to Your Wood
We will not over-saturate the wood. We will not use high pressure settings that lift grain or leave visible marks. We will not leave cleaning solution on the surface without a proper rinse. We use biodegradable products and make sure runoff is directed away from garden beds and landscaping as much as the site allows. Hockessin and Greenville homeowners have put serious money into their outdoor spaces. We treat that investment accordingly.
Pricing and What to Expect
Deck and fence cleaning pricing depends on total square footage, the condition of the surface, and site accessibility. A standard residential deck in the 300 to 500 square foot range is a straightforward single-visit job. Larger multi-level decks or long privacy fence runs take more time and product. We give firm quotes before we start, no surprise add-ons at the end of the job. Call us at (302) 757-9755 or fill out the form on our site and we will get back to you within one business day.
Frequently Asked Questions
Will soft washing damage the wood on my deck or fence?
No. Soft washing uses low water pressure combined with a diluted cleaning solution to break down mold, algae, and mildew. The chemical does the work, not the pressure. This is much safer for wood fibers than a standard pressure wash at high PSI, which can raise grain, leave marks, and drive moisture into the structure.
How long does it take for my deck to dry after cleaning?
In typical Delaware summer conditions with temperatures in the 70s and low humidity, most decks are surface-dry within a few hours and fully dry within 24 to 48 hours. If you are planning to stain or seal after cleaning, most stain manufacturers recommend 48 to 72 hours of drying time. We can time our cleaning to fit your finishing schedule.
My fence is on the north side of the house and is covered in green slime every year. Can you fix that?
Yes, and this is a very common situation in Hockessin and Greenville. North-facing surfaces stay shaded and damp, which is exactly what green algae needs. We apply a cleaning solution that kills the algae at the root and rinse it clean. The effect will not last forever, north-facing wood in this climate will always grow algae back over time, but a good cleaning every one to two years keeps it manageable and protects the wood.
Do you clean composite decks as well as wood?
Yes. Composite decking also accumulates mold, algae, and pollen, especially in the grooves between boards. We adjust our approach and pressure settings for composite materials. The cleaning process is similar but we are careful to stay within the manufacturer's recommended pressure range for the specific composite product.
Can I get my deck cleaned and my gutters done on the same visit?
Absolutely. Bundling services is a good way to save on a service call. Many customers in Hockessin and Greenville schedule deck or fence cleaning alongside gutter cleaning, house washing, or driveway pressure washing. Just mention what you need when you call (302) 757-9755 and we will put together a quote for the full scope.
How much does deck and fence cleaning cost in Hockessin or Greenville?
Pricing is based on square footage, surface condition, and site access. A typical single-level residential deck in the 300 to 500 square foot range is a common job for us and we quote it the same day after a quick site assessment. Call (302) 757-9755 or submit a request online and we will get you a firm number within one business day. No vague estimates, no surprise charges on the invoice.