Your Roof Cleaning Experts in Beaverton, OR

Beaverton’s dense Douglas fir and cedar canopy is one of the things that makes the city beautiful — one of the main reasons moss takes hold on roofs faster here than almost anywhere else in the Portland metro. Needle drop, shade, and Washington County’s 37+ inches of annual rainfall create perfect conditions for moss, algae, and organic buildup to spread across shingles before most homeowners notice it happening.

At Premium Powerwash, we’ve cleaned hundreds of roofs across Beaverton’s neighborhoods — from the newer construction homes in Murrayhill and Raleigh Hills to the older Craftsman-style properties near Cedar Mill. We use soft-wash methods approved by ARMA (Asphalt Roofing Manufacturers Association) that kill moss and algae at the root without stripping granules or voiding your warranty.

1. Why Beaverton Roofs Need Cleaning Sooner Than You Think

Beaverton gets more shade than people realize. North- and west-facing roof slopes rarely dry out between October and May. That persistent moisture is all moss needs to colonize a roof within two to three rainy seasons.

The mature fir trees that line streets in neighborhoods like Greenway, Aloha, and West Beaverton drop needles that collect in roof valleys and around chimneys. That organic debris holds moisture against shingles for weeks, accelerating growth. If your roof has black streaking or visible green patches, those are not just cosmetic issues — gloeocapsa magma (the black algae) and moss both degrade asphalt shingles over time, reducing their lifespan by years.

A professional soft-wash cleaning every 2-3 years is the most cost-effective way to protect a Beaverton roof.

2. Soft Wash -- The Right Method for Beaverton’s Composite Roofs

Most Beaverton homes built after 1995 have composite architectural shingles — the type that manufacturers specifically warn against pressure washing. High-pressure water strips the protective granule coating that gives asphalt shingles their UV resistance and fire rating.

We use a low-pressure soft-wash system with a biodegradable cleaning solution that kills moss, algae, and lichen organisms on contact. The treatment continues working for several weeks after application, killing off any remaining spores. The result lasts 2-4 years depending on tree coverage and shade exposure.

No pressure damage. No warranty issues. Just a clean roof that stays clean.

3. Pricing That’s Transparent From the Start

We give every Beaverton homeowner a no-obligation on-site estimate before any work begins. No flat rates guessed over the phone — because roof pitch, square footage, tree coverage, and moss density all affect the scope of the job.

What you can expect: clear pricing, an honest assessment of your roof’s condition, and no upselling services you don’t need. We’ll tell you exactly what we’re doing and why.

4. Licensed, Insured, and Local

We’re a family-owned operation serving the Portland metro area, including Beaverton and the surrounding Washington County communities. We’re fully licensed and insured to operate in Oregon, which matters when someone is working on your roof.

Roof cleaning involves real height and access risks. We carry full liability insurance and workers’ compensation coverage so you’re not exposed in the unlikely event something goes wrong on your property.

5. Satisfaction Guaranteed

If you’re not happy with the result, we’ll come back and make it right. That’s not a marketing phrase — it’s how we’ve built our reputation across Beaverton and the broader Portland metro over the past five years. Most of our Beaverton customers find us through a neighbor referral.

Ready to get your Beaverton roof cleaned right? Call us at (503) 575-6575 or fill out the form below for a no-obligation on-site estimate. We serve Beaverton, Cedar Mill, Aloha, Murrayhill, and the surrounding Washington County area.

What We Do

We know the importance of maintaining a clean and tidy exterior of your home or business. That's why we offer a variety of professional cleaning services to ensure your property is always looking its best.

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Roof Softwash

Complete roof cleaning service that removes moss, algae, black streaks, and debris using a safe soft wash process.

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Gutter Cleaning

Thorough gutter and downspout cleaning to prevent clogs, overflow, and water damage around your home.

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Pressure Wash

Professional surface cleaning for driveways, patios, and concrete areas to remove dirt, stains, and buildup safely.

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House Wash

Exterior soft wash cleaning that removes algae, mildew, and grime from siding without damaging paint or trim.

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Who We Are

We’re a local, family-owned operation founded by two dedicated brothers with over five years of specialization in the exterior cleaning industry. Our story begins with a shared passion for transforming and maintaining homes and properties. Committed to excellence and driven by a love for what we do, we’ve made it our mission to make your surroundings shine.

With our combined expertise, we bring the perfect blend of experience, knowledge, and a personal touch to each project. As a team, we take pride in offering top-quality services, backed by a genuine dedication to our community.

When you choose us, you’re not just choosing experts; you’re choosing a family tradition of trust, reliability, and a cleaner, brighter future for your property.

Contact Us

Get a FREE Estimate

We offer a no-obligation free on-site estimate for our services including roof cleaning, gutter cleaning, pressure washing, and window cleaning in Beaverton, OR. Our team of experts will provide you with a detailed assessment of your property and give you an accurate estimate of the work required.

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Our Phone

(503) 575-6575

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Our Email

dimitri@roofcleaningportlandor.com

    Get a FREE Estimate



    Frequently Asked Questions

    Does soft washing damage Beaverton’s composite shingles?

    No. Soft washing uses low pressure (similar to a garden hose) combined with a biodegradable cleaning solution. It’s the method recommended by ARMA for asphalt composite roofs, which make up the majority of Beaverton homes built since the mid-1990s. Pressure washing, by contrast, strips granules and can void manufacturer warranties.

    How long does roof cleaning last in Beaverton’s climate?

    With Beaverton’s tree coverage and rainfall, most roofs stay clean for 2-4 years after a professional soft-wash treatment. Homes with heavy north-facing shade or close-overhanging fir trees may see growth return sooner. We’ll tell you honestly what to expect for your specific roof during the estimate.

    My roof has had black streaks for years. Can that be removed?

    Yes. Black streaking is caused by gloeocapsa magma, an airborne algae that feeds on the limestone filler in asphalt shingles. It’s extremely common in the Pacific Northwest. Our soft-wash solution kills it and removes the staining — typically in a single treatment.

    Do I need to be home for the roof cleaning?

    You don’t need to be present. We ask that someone with access to an outdoor water connection is available, and that pets and children stay clear of the work area during treatment. We’ll confirm all details when booking.

    Does moss affect my roof insurance coverage in Beaverton?

    Some homeowners insurance carriers in Oregon will deny claims or reduce coverage for roofs with visible moss or algae growth, classifying it as a maintenance issue rather than damage. Regular professional cleaning protects both your roof and your ability to file a claim if something unrelated causes damage.