Soft-Wash / Low Pressure Cleaning
Since 1992, Alpine Roof Care has proudly served homeowners throughout Snohomish and King County with professional, eco-friendly roof cleaning and moss removal. From Arlington to Kent, we help preserve your roof’s integrity while restoring its appearance using safe, effective methods tailored to the Pacific Northwest’s climate.
Unlike companies that offer limited or one-size-fits-all solutions, we specialize in comprehensive roof maintenance. Whether you have cedar shake or asphalt shingles, our team uses soft-wash techniques and low-pressure cleaning to protect your roof while removing damaging moss, algae, and debris. Our work doesn’t just make your roof look better—it helps it last longer, saving you money on future repairs or replacements.
We’re licensed, bonded, insured, and known for honest estimates, punctual service, and outstanding results. And as one of the first roofing companies in the Seattle area to implement green roofing practices, we recycle up to 90% of tear-off materials and use environmentally safe cleaning products.
Ready to give your roof the attention it deserves? We proudly serve Snohomish, Kirkland, Lynnwood, Sammamish, Edmonds, Renton, Kent, and more.
Soft Wash Service Area
- Arlington
- Bellevue
- Bothell
- Edmonds
- Everett
- Issaquah
- Kirkland
- Lynnwood
- Mill Creek
- Redmond
- Woodinville
- Renton
- Sammamish
- Seattle
- Shoreline
- Snohomish
Roof Cleaning Techniques
At Alpine Roof Care, we know that different roofing materials require different cleaning methods. That’s why we implement gentle soft wash cleaning techniques to avoid damage while effectively removing moss and buildup. Here’s how we care for your roof:
Cedar Shake Roofs: We offer both low-pressure high water volume cleaning or gentle air cleaning techniques to safely clean and preserve older cedar shake shingles.
Asphalt Shingle Roofs: Using compressed air or soft washing, we gently remove moss and debris while avoiding damage to the shingles’ structure and integrity.
After cleaning, we recommend applying a moss treatment like Moss Out to help prevent regrowth and protect your roof long-term.
We also provide high-pressure exterior cleaning for patios, decks, vinyl siding, pavers, and driveways. If a garden hose can’t cut it, Alpine Roof Care can.
Whether you’re in Arlington, Shoreline, Edmonds, or Kent, we’re here to help with expert roof cleaning services across Snohomish County and beyond. Call now for your free estimate.
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Benefits Of A Roof Cleaning Service
Using experienced professionals, and regular cleaning provides many benefits to the homeowner.
Improved Curb Appeal
Cleaning your roof can do wonders for improving its curb appeal. You can restore its original beauty by removing dirt, debris, and other elements that can discolor or create black streaks on your roof over time. This can make you proud to show off your home to visitors or potential buyers. Plus, if you’re in an area with strict HOA regulations, professional cleaning may be necessary to keep up with those guidelines.
Protection Against Damage
A clean roof is less susceptible to damage caused by mold, mildew, and algae growth. Mold spores can grow on roofs that are not cleaned regularly due to moisture buildup from rain or snowfall, which can cause staining or even structural damage if left untreated for too long. Additionally, algae growth on roofs causes discoloration that may be unsightly but also makes them more prone to leaks and further degradation over time. A professional roof-cleaning service will use specialized equipment and techniques to safely and effectively remove these elements while protecting your roof’s integrity in the process.
Energy Efficiency
Depending on where you live, having a clean roof may help improve your energy efficiency! Any buildup on a rooftop will decrease its reflectivity of sunlight—meaning that instead of reflecting it back out into the atmosphere as it should be, some heat is absorbed into the house below. This leads to increased air conditioning costs during summer and higher heating bills during wintertime since more heat is escaping from your home than it should be. Regular cleaning helps ensure that your rooftop reflects light away from the house rather than absorbing it inside!
Keep your roof looking spic and span while ensuring its lifespan with regular maintenance cleanings that could otherwise lead to roof replacement needs before the end of your roof’s warranty. These cleanings also remove debris, so your roofing system operates at its peak performance. Serving all homes in the Greater Seattle area.
Roof Cleaning Costs
Not all roofs are created the same which means that Seattle roof cleaning costs can vary as well. What goes into the cost of cleaning?
Square Footage
The size of the roof (square feet) has a direct impact on cost as more time and products will be needed to complete the job.
Roof Shape
More complex roofing systems will require more detailed work is required to remove stains.
Roof Steepness
The steeper the roof the more safety equipment and precautions are needed to keep our crew safe while cleaning and applying treatment.
Why Alpine Roof Care?
Established in 1992, Alpine Roof Care has provided professional, punctual, and affordable roof cleaning services to the greater Seattle area – including Mill Creek, Arlington, Edmonds & Renton. With the ability to service all aspects of roof maintenance, including roof repair, roof sealing, reroofing, and roof cleaning, there is no need to bounce around from company to company. Instead, meet all your clean roof needs here and keep your family warm and dry.
We are a forward-thinking company and are proud to be one of the first in the area to implement “green roofing”. Our “green roofing” program recycles 90% of its tear-off materials accumulated during a roofing repair or roof replacement service. Along with using environmentally safe products, we strive to give you the best possible reroof and roof replacement services while caring for the environment.
Roof Cleaning Gallery
Servicing the Greater Puget Sound
Roof Cleaning FAQ
The frequency you should clean your roof typically depends on your local climate and surrounding environment. Generally, it’s advised to have a professional roof cleaning by a company like Alpine Roof Care every two to three years. However, if your home is in an area with heavy tree coverage or experiences high humidity, annual cleanings may be necessary to prevent moss, organism growth, algae, and loose debris accumulation that could lead to roof damage.
No, professional roof cleaning will not damage your roof when done correctly and by a reputable company like Alpine Roof Care. Our professionals take great care to use techniques that are safe and effective. They avoid high-pressure washing that can harm shingles, instead opting for gentle yet effective cleaning methods. It’s important to remember that neglecting roof maintenance can lead to far more significant damage in the long run due to the build-up of moss, algae, and debris.
Identifying when a roof needs cleaning is crucial in maintaining its longevity. A few signs indicate that it might be time for a roof wash. These include visible moss, algae, or lichen growth on your shingles, which can lead to shingle deterioration over time. Black streaks or discoloration on your roof is another indication of algae growth. Excess leaves, pine needles, or other debris littering your roof can trap moisture and lead to decay. If your roof exhibits any of these signs, it would be advisable to consult a professional roof cleaning service like Alpine Roof Care.
You can take several proactive steps to reduce the frequency of necessary roof cleanings. Firstly, regular gutter cleaning can prevent debris buildup on your roof, mitigating the risk of moisture trapping and decay. Secondly, trimming overhanging tree branches can reduce the number of leaves, twigs, and moss on your roof. Lastly, consider installing zinc or copper strips at the roof’s peak. When it rains, the metals react with the water to create a solution to prevent moss and algae growth. However, it’s essential to remember that these preventative measures do not replace the need for professional roof cleaning by a company like Alpine Roof Care. Regular professional cleanings are crucial to the longevity of your roof.
While a bit of moss may seem harmless and even picturesque, it can damage your roof over time. Moss absorbs moisture and retains it on the roof’s surface, which can lead to wood rot and shingle deterioration. The expanding and contracting of the moss as it absorbs and releases water can also cause the shingles to crack or break. Moreover, moss can lift the shingles, allowing water to seep underneath, leading to leaks and further damage. Taking early action to control moss growth can prevent these issues and extend the life of your roof. Therefore, professional services like Alpine Roof Care should not ignore or address even a little moss.