Roof Cleaning in Southwest Washington

Moss, algae, and black streaks don’t just look bad — they shorten your roof’s life. Our low-pressure soft wash removes them safely and protects your investment.

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Roof Cleaning

Safe soft wash roof cleaning that actually lasts

In the Pacific Northwest, roofs take a beating. Constant damp, tree cover, and shade let moss, lichen, and black algae (Gloeocapsa magma) take hold — the dark streaks you see running down shingles. Left alone, moss lifts and separates shingles, traps moisture against the roof deck, and can lead to rot and premature failure.

We never pressure wash a roof. High pressure strips the protective granules off asphalt shingles and can void your manufacturer’s warranty. Instead, we use a low-pressure soft wash with plant-safe cleaning solutions that kill growth at the root, so your roof stays cleaner far longer than a quick blast-off ever would.

Whether you have composition shingles, metal, tile, or cedar shake, we tailor the treatment to your roof and protect your landscaping the whole way through.

What We Clean

Asphalt & composition shingles
Metal & standing-seam roofing
Tile & concrete roofs
Cedar shake
Moss & lichen removal
Black algae streak treatment

Why It Matters

Why roof cleaning is worth it

Extend Roof Life

Removing moss and algae stops moisture damage before it forces an early, expensive replacement.

Protect Your Warranty

Soft washing keeps shingle granules intact — unlike pressure washing, which can void coverage.

Restore Curb Appeal

Streaks and green patches vanish, and your roof looks years newer from the street.

Prevent Leaks & Rot

Stop moss from lifting shingles and holding water against the roof deck.

Our Process

How we get it done

Inspect & Protect

We assess your roof type and condition, then wet down and cover nearby plants and landscaping.

Apply Soft Wash

A plant-safe cleaning solution is applied at low pressure to coat moss, algae, and lichen.

Let It Dwell

The solution kills growth at the root — the part a quick rinse always leaves behind.

Gentle Rinse

We rinse carefully at low pressure. Remaining moss keeps releasing over the following weeks.

Before After

The Evergreen Difference

From streaked and mossy to like-new

Drag the slider to see a typical Southwest Washington roof before and after our soft wash treatment.

No harsh pressure, no stripped granules — just a clean roof and results that hold up through the wet season.

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Proudly Serving Southwest Washington

Castle Rock Longview Kelso Woodland Ridgefield Battle Ground Vancouver Camas Washougal

Don’t see your town? Give us a call — we may still be able to help.

FAQ

Roof Cleaning questions, answered

Is soft wash roof cleaning safe for my shingles?

Yes. Soft washing uses low pressure and specialized cleaning solutions instead of force, so it won’t strip the protective granules off your shingles the way high-pressure washing can. It’s the method recommended by most shingle manufacturers.

Will pressure washing damage my roof?

It can. High pressure blasts away the granules that protect asphalt shingles from UV and weather, and it can force water under shingles. It may also void your warranty. That’s why we only soft wash roofs.

How often should a roof be cleaned in the Pacific Northwest?

Most homes here benefit from a roof cleaning every 2–3 years because of our damp, shaded climate. Heavily tree-covered or north-facing roofs may need it more often.

Will the cleaning solution hurt my plants?

We protect and pre-wet landscaping before we start, use plant-safe solutions, and rinse surrounding areas afterward. Damage is very rare when the job is done properly.

Why is there still some moss after cleaning?

Our solution kills moss at the root, but dead moss releases gradually over the following weeks with rain and wind rather than all at once. This is normal and means we didn’t have to scrub or damage your shingles.

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