When you pull into your driveway, what’s the first thing you see? If it’s green streaks on your siding, black stains on your roof, or a dull, dirty patio, you’re not alone. Northern Virginia’s humid summers and unpredictable weather make mold, algae, and grime a constant battle. That’s where Lawn Theory’s exterior cleaning services in Northern Virginia.

We’re a veteran-owned, licensed, and insured company, serving Fairfax, Loudoun, Arlington, Alexandria, Prince William, and Falls Church. Our team specializes in safe, effective house washing, roof cleaning, driveway restoration, and full-service exterior care. One call to us is all it takes to protect your home, boost curb appeal, and keep your property looking spotless.

📞 Call (703) 650-5655 now or request a free estimate today.

Why Professional Exterior Cleaning Matters

Skipping exterior cleaning is like skipping oil changes on your car, you may not notice the damage right away, but it’s happening. Here’s why hiring professionals like Lawn Theory makes all the difference:

• Curb Appeal & Resale Value – A clean home exterior makes your property shine and increases market value.
• Preventative Maintenance – Removing algae, mildew, and moss prevents rot and long-term damage.
• Safety & Health – Mold, mildew, and slippery surfaces aren’t just ugly; they’re safety hazards and allergens.
• Savings Over Time – DIY pressure washing often causes damage (stripped paint, broken siding). Professionals know how to clean without destroying surfaces.

Our Exterior Cleaning Services

At Lawn Theory, we provide a full suite of exterior cleaning services designed for Northern Virginia homes and businesses.

House Washing / Siding Cleaning (Soft Wash)

Our soft wash system uses low-pressure water and eco-friendly detergents to safely clean vinyl, stucco, and painted surfaces. Say goodbye to mold streaks and dirt without damaging your siding.

Roof Cleaning & Algae/Moss Removal

Black streaks and moss on shingles? We use soft-wash roof treatments that kill algae, extend shingle life, and restore your roof’s original look.

Driveway & Walkway Pressure Washing

Remove oil stains, rust, gum, salt residue, and years of dirt. Concrete, asphalt, and pavers get a fresh new life with our professional pressure washing.

Deck & Patio Cleaning

Wood or composite, we know how to deep-clean without causing splinters or surface wear. Pair cleaning with sealing for maximum protection.

Fence Cleaning

Vinyl and wood fences lose their luster over time. We restore brightness and extend lifespan with our targeted cleaning methods.

Gutter Cleaning & Brightening

Prevent water damage by keeping gutters clear. Our gutter brightening also removes those stubborn black streaks.

Commercial Exterior Cleaning

From storefronts to parking lots, we keep your business exterior spotless, because first impressions matter.

Pressure Washing vs. Soft Washing – Which One Do You Need?

Not all cleaning methods are created equal:

• Pressure Washing = High pressure, best for hard surfaces (driveways, concrete, brick).
• Soft Washing = Low pressure + detergents, best for delicate surfaces (siding, roofs, wood).

At Lawn Theory, we assess every surface to use the safest, most effective method. No stripped paint. No cracked shingles. Just a clean, healthy home.

Our Process: Inspection → Clean → Protect

Here’s how we handle every project:

1. Free On-Site Inspection & Estimate
2. Surface Identification & Cleaning Plan
3. Protect Plants, Fixtures & Landscaping
4. Apply Pre-Treatments for mold, algae, or stains
5. Soft Wash or Pressure Wash (based on surface)
6. Rinse, Seal, or Brighten as needed
7. Final Walkthrough with Homeowner

It’s a proven process that guarantees results without damage.

Pricing Guide & What Affects Cost

Every property is different, but here’s what impacts pricing:

• Surface Type (siding vs. concrete vs. roof)
• Square Footage
• Stain Type & Severity
• Height & Accessibility (multi-story homes may require specialized lifts)
• Add-On Services (gutters, sealing, deck restoration)

Seasonal Tips for Northern Virginia Homeowners

• Spring: Remove pollen, mildew, and winter residue.
• Summer: Clean patios, decks, and poolsides for outdoor living.
• Fall: Prep for winter; remove leaves and prevent gutter clogs.
• Winter: Post-storm salt residue removal for driveways & walkways.

Local Case Studies

Fairfax Driveway Restoration
We pressure-washed a 12-year-old driveway covered in oil stains. After treatment, the homeowner said: “It looks brand new. I wish I’d called years ago!”

Arlington Roof Soft Wash
A townhouse roof covered in algae streaks was cleaned in one afternoon, extending the roof’s lifespan and making the HOA happy.

FAQs – Exterior Cleaning Services in Northern Virginia

Q1: What’s the difference between pressure washing and soft washing?
Pressure washing uses high PSI for tough surfaces like driveways. Soft washing uses low pressure and detergents for delicate surfaces like roofs and siding.

Q2: How often should I clean my home’s exterior?
In Northern VA, most homes need siding cleaned every 2–3 years. Driveways and patios may need annual or bi-annual cleaning.

Q3: Is exterior cleaning safe for plants and pets?
Yes. We use eco-friendly solutions, protect landscaping, and rinse thoroughly.

Q4: Can pressure washing remove oil stains?
Yes, with degreasers and high-pressure rinsing. Deep stains may need multiple treatments.

Q5: Do you offer commercial exterior cleaning?
Absolutely. We service businesses, HOAs, and commercial properties with maintenance plans.

Why Choose Lawn Theory for Exterior Cleaning in Northern Virginia?

Veteran-Owned — Trust, discipline, and detail-driven work.
Licensed & Insured — Full protection for your home or business.
Local Expertise — We know the weather, soils, and HOA rules of Northern VA.
Eco-Friendly Cleaning — Safe for your family, pets, and landscaping.
5-Star Service — Transparent pricing, reliable scheduling, and proven results.

Call to Action – Book Your Exterior Cleaning Today

Don’t wait until mold or grime damages your home. Lawn Theory’s exterior cleaning services keep your siding, roof, driveways, and patios spotless, safe, and long-lasting. See us on Instagram & Linkedin.