Roof Treatment Services in Kirkland, WA
Protecting your roof in Kirkland’s rainy and unpredictable weather is key to maintaining its health and appearance. Alpine Roof Care offers roof treatment services designed to extend your roof’s life and prevent costly damage:
Our Roof Treatment Options
- Protect Natural Cedar Oil: A clear treatment perfect for cedar shake roofs, offering a three-year no-moss guarantee while preserving the wood’s natural look.
- Protect Natural Cedar Oil with Color Stain: Refreshes your cedar roof with new color while providing three years of moss protection.
- Weathershield: An eco-friendly, water-based solution that extends your roof’s life by 30–50% and includes a five-year no-moss warranty by preventing moss regrowth at the pH level.
We start by removing debris, handling minor repairs, and applying the selected treatment with care and precision to protect your Kirkland home for years to come.

Weathershield
Weathershield is a water-based roof treatment designed to extend the life of your roof by 30% to 50%. Environmentally compatible, non-flammable, and nearly odorless, Weathershield is applied after gently cleaning debris from the roof using air or light water blowoff. Following this, necessary repairs are made, including minor shake or ridge cap replacements. The treatment is applied on dry days to ensure deep penetration, and once the water evaporates, safe chemicals are left behind to protect your roof. Weathershield transforms with rain, sun, and temperature changes, gradually killing moss and lichens and turning the roof a light silvery grey. Roofs previously treated with colorants or stains may not experience a shift to the natural gray color.
This natural cleaning process works with every rainfall, helping to rinse away moss and fungi over time, with full cleaning results typically appearing within six months and lasting up to five years. By altering the pH in the wood to a more alkaline state, Weathershield also prevents moss, fungi, and lichens from regrowing. The treatment includes a 5-year no-moss warranty, offering reliable and long-lasting protection for homeowners in Kirkland. Alpine Roof Care proudly provides Weathershield services to help protect and enhance roofs across the area.


Why Alpine Roof Care?
Alpine Roof Care has been serving Kirkland homeowners since 1992, delivering dependable, eco-friendly roof treatment services that protect and beautify cedar shake roofs. Our skilled team specializes in cleaning, treating, sealing, and minor repairs, making it easy to keep your roof healthy and vibrant.
Committed to sustainability, Alpine Roof Care recycles 90% of roofing materials from our projects and uses environmentally friendly products. When Kirkland homeowners need expert cedar shake roof care and moss prevention, they know they can trust Alpine Roof Care.
Get Started with Alpine Roof Care
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