Roof Cleaning in Keswick, VA

Your Roof Deserves Better Than Black Streaks

Professional roof cleaning that removes harmful algae and moss while protecting your biggest investment.

Hear from Our Customers

Professional Roof Cleaning Services Keswick

What Clean Roofs Actually Do for You

Those black streaks aren’t just ugly—they’re algae literally eating your shingles. Every month you wait, they spread further and dig deeper into your roofing material. Clean roofs last years longer. The algae and moss we remove would have continued breaking down your shingles, forcing you into expensive repairs or premature replacement. Your home’s value jumps when that roof looks new again. Neighbors notice. Potential buyers don’t assume your roof needs replacing when it’s actually fine underneath all that growth.

Keswick Roof Washing Experts

Thirty Years of Getting Roofs Right

Blue Ridge Exterior Cleaning has been serving Central Virginia homeowners since the early days of professional roof cleaning. We’ve cleaned thousands of roofs throughout Keswick and the surrounding areas. What sets us apart is our commitment to doing things the right way. You get a real person when you call, not a call center. Our crew shows up when promised and explains exactly what we’re doing. We’re certified by the industry’s leading organizations—Spray Wash Pro, Spray Wash Academy, and the National Soft Wash Alliance. But certifications don’t clean roofs. Experience does. And thirty years of it means we’ve seen every type of roof problem Keswick properties face.

Roof Cleaning Process Keswick VA

How We Actually Clean Your Roof

First, we inspect your roof to identify the type of growth and any potential issues. Different algae and moss require different approaches, and we’ve learned what works over three decades. Next comes the soft wash application. We use low-pressure equipment that won’t damage your shingles or void your warranty. The cleaning solution does the work, not brute force. This kills the algae and moss at the root level. Finally, we rinse everything clean with controlled water pressure. The dead growth washes away, revealing the roof that was hiding underneath. Most homeowners are shocked at how much better their roof looks—like it’s years newer.

Ready to get started?

Explore More Services

About Blue Ridge Exterior Cleaning

Get a Free Consultation

Keswick Roof Cleaning Solutions

What's Actually Included in Professional Service

Your roof cleaning service includes complete algae and moss removal using industry-approved soft wash methods. We treat the entire roof surface, not just the visible problem areas, because algae spreads beyond what you can see from the ground. Keswick’s humid climate and those beautiful mature trees create perfect conditions for roof growth. The red clay soil common in this area also contributes to staining issues that many cleaning companies don’t understand how to handle properly. We protect your landscaping during the process and clean up completely when finished. You get a detailed explanation of what we found and recommendations for keeping your roof cleaner longer. This isn’t a quick spray-and-go service—it’s a comprehensive roof restoration.

How often should I have my roof cleaned in Keswick?

Most Keswick homes need roof cleaning every 2-3 years, but it depends on your specific conditions. Homes with heavy tree coverage or north-facing roof sections may need attention sooner. The key is not waiting until you see black streaks. By then, the algae has been growing for months and has already started breaking down your shingles. Regular cleaning prevents this damage and costs far less than letting problems develop. If you’re seeing any discoloration or dark spots, it’s time for professional cleaning. The longer you wait, the harder it becomes to remove the growth and the more damage it causes to your roofing material.

Will pressure washing damage my roof shingles?

High-pressure washing absolutely will damage your roof and likely void your warranty. That’s why we use soft wash systems instead of pressure washers. Soft washing uses low-pressure application (similar to a garden hose) combined with specialized cleaning solutions. The chemicals do the work of killing and removing algae and moss, not high-pressure water that can strip granules and create leaks. Many roofing manufacturers specifically warn against high-pressure cleaning in their warranty terms. Our soft washing is the only method endorsed by major shingle manufacturers for safe cleaning that won’t damage your roof or affect your warranty coverage.

What's the difference between algae and moss on roofs?

Algae appears as black streaks running down your roof and stays flat against the shingles. It’s actually a blue-green organism called Gloeocapsa magma that protects itself with dark pigmentation. This is what creates those unsightly black stains most people notice first. Moss grows upward in small mounds and is typically green or brown. It’s more problematic because it can actually lift shingles as it grows, creating gaps where water can penetrate and cause leaks. Both need professional removal, but they require different treatment approaches. Algae responds well to chemical treatment alone, while established moss often needs gentle physical removal after the cleaning solution kills the root system. We know how to handle both safely.

How long does roof cleaning take to complete?

Most residential roof cleaning in Keswick takes 2-4 hours, depending on the size of your roof and the extent of growth. Heavily moss-covered roofs or complex rooflines may take longer. We don’t rush the process. Proper dwell time for the cleaning solution is crucial for killing algae and moss completely. Rushing this step means the growth comes back faster and you don’t get the long-lasting results you’re paying for. Weather conditions also affect timing. We won’t clean roofs in high winds, during rain, or when temperatures are too hot or cold for optimal results. You want the job done right, not just done fast.

Can I clean my own roof to save money?

DIY roof cleaning is dangerous and often makes problems worse. Every year, people are seriously injured or killed falling from roofs. We have proper safety equipment and training that most homeowners don’t possess. More importantly, using the wrong cleaning products or methods can damage your shingles and void your warranty. Store-bought roof cleaning products are often too harsh or ineffective, and homeowners frequently use too much pressure trying to get results. Professional cleaning costs a fraction of roof replacement and comes with proper insurance coverage. When you factor in equipment rental, cleaning products, safety gear, and your time, the cost difference isn’t as significant as you might think—and the results are dramatically better.

Will roof cleaning remove all stains immediately?

Algae stains disappear immediately during the cleaning process—you’ll see dramatic results right away. However, moss and lichen removal works differently and may take several weeks for complete results. Heavy moss needs time to die completely after treatment. The cleaning solution kills the root system, but thick moss may need to dry out and naturally detach over the following weeks. This prevents damage that would occur from aggressive scraping. Some stains may require a second treatment if they’ve been present for years. We’ll explain what to expect based on your specific roof conditions and will return if additional treatment is needed to achieve the results you were promised.

Local Resources

Keswick, VA is located in Albemarle County in Virginia State