How Often Should You Pressure Wash Your House?
The short answer: every 1–2 years for most Delaware homes. But several factors can change that timeline. Here's what you need to know.
The General Rule of Thumb
Most exterior cleaning professionals recommend pressure washing your home's exterior every 12 to 24 months. This keeps algae, mold, mildew, and dirt from building up to the point where they cause lasting damage or become difficult to remove.
However, "every 1–2 years" is a starting point—not a hard rule. Your home's specific location, surrounding environment, and the materials used in its construction all play a role in how quickly it gets dirty.
Factors That Mean You Should Clean More Often
- You live within 10 miles of the coast (salt air accelerates buildup)
- Your home is surrounded by trees or has heavy shade
- You notice green, black, or white growth on surfaces
- Humidity is consistently high (Sussex and Kent Counties average 70%+)
- You're preparing to sell or refinance your home
Recommended Frequency by Surface
House Siding
Every 1–2 yearsVinyl, brick, and stucco benefit from annual soft washing in coastal Delaware climates.
Driveways & Walkways
Every 1–2 yearsConcrete and pavers accumulate algae, oil stains, and dirt that regular rain can't remove.
Decks & Fences
Every 1–2 yearsWood and composite surfaces need gentle cleaning to prevent mold, graying, and splinter damage.
Roofs
Every 2–3 yearsSoft washing removes algae streaks and extends shingle life—never use high pressure on a roof.
What Makes Delaware Different
Delaware's Mid-Atlantic location means homeowners deal with a unique combination of challenges: high summer humidity, coastal salt air (especially in Sussex County), heavy pollen seasons, and enough rainfall to keep surfaces perpetually damp during spring and fall.
In communities like Milton, Lewes, Rehoboth Beach, and Dover, these conditions accelerate organic growth on exterior surfaces. Homes in shaded or wooded areas—or those near retention ponds—may need cleaning annually rather than every two years.
Not Sure When Your Home Was Last Cleaned?
We'll take a look and let you know what your home needs—no charge, no pressure. We serve homeowners throughout Sussex and Kent Counties.
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