Local Pressure Washing Company
Clean and Remove Moss From Roof
Over time, exposure to the elements causes organic growth like moss, lichen, and algae to thrive on your roof—especially in the moist Pacific Northwest climate. Moss can grow underneath shingles and shake tiles, absorbing moisture and leading to rot, wood decay, and structural damage. Left untreated, it can significantly shorten the lifespan of your roof.
Additionally, algae stains and grime aren’t just cosmetic issues—they can also affect your home’s insulation efficiency and water runoff patterns. Roof cleaning not only prevents these issues but also contributes to improved energy efficiency and reduced long-term repair costs. By investing in seasonal or annual pressure washing, you’re protecting your property, increasing its value, and maintaining a healthier, more attractive home environment.
LEarn about
How Our Roof Cleaning Process Works
We take great pride in using a low-pressure soft washing method, which is the safest and most effective way to clean roofs. Unlike high-pressure techniques that can strip granules from shingles or damage tiles, our soft wash system uses a carefully mixed, biodegradable solution that breaks down moss, algae, and dirt at the root level. This solution is applied evenly across the roof and allowed to soak in before a gentle rinse is performed to remove debris.
Our technicians take extra steps to protect your landscaping, gutters, and nearby structures during the cleaning process. We carefully control water flow and use protective coverings as needed to avoid any overspray or mess. Once complete, we always ensure your property is left cleaner than we found it, with no mess left behind. The result is a beautifully restored roof that looks better, functions better, and lasts longer.
Learn about how
Moss Can Damage Your Roof
Moss may look harmless—or even charming—on a roof, especially in the Pacific Northwest where it thrives in the damp, shaded environment. However, the truth is that moss is one of the most damaging forms of organic growth for roofing materials and can lead to costly repairs or premature roof replacement if left untreated.
Moss acts like a sponge. It retains water every time it rains or even when there's heavy dew or fog. This moisture doesn’t evaporate quickly, especially when moss spreads under the edges of shingles or tiles. When moss infiltrates these spaces, it lifts the shingles slightly, creating openings that allow water to seep underneath. This compromises the waterproof barrier of your roof and leads to wood rot, mold growth, and potential leaks into your attic or living space.
In colder months, any retained moisture in the moss or under the shingles is vulnerable to freezing. Water expands when it turns to ice, which can cause shingles to crack, warp, or separate from the roofing deck. The more freeze-thaw cycles your roof endures with moss present, the faster the deterioration process happens. Even minor cracks can turn into larger structural issues over time.
When moisture seeps below the roof’s surface, it doesn't just affect the shingles—it begins to compromise the roof decking and structural supports underneath. Prolonged dampness leads to wood rot, which weakens the roof’s ability to bear weight, especially during heavy rains or snowfall. Over time, this kind of damage may require partial or full roof replacement, often far earlier than the roof's intended lifespan.
A moss-covered roof can attract insects, birds, and rodents that see it as a safe habitat. Moss provides nesting material and a hiding place for pests. Once established, they can find ways into your attic or under eaves, causing further damage and posing potential health risks.
While less immediately threatening than structural issues, moss-covered roofs make a home appear poorly maintained. This can decrease curb appeal and property value, which is especially important if you plan to sell your home. Prospective buyers and inspectors often flag moss as a concern that could indicate underlying damage or neglect.
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