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Mossbrothers

The moss comes off.The shingles stay on.

Soft-wash roof cleaning and moss removal from Lake Stevens, across Snohomish County. No pressure on your shingles, and moss stays off for up to 3 years.

Free estimates in person or from satellite view. See before & after

  • 8+years cleaning roofs in Snohomish County
  • 3 yrsthe longest one soft‑wash treatment keeps moss off
  • 18cities served from Lake Stevens
  • 5roof types: composition, tile, cedar shake, metal and slate

Roofs first, then the rest of the outside

We clean composition, tile, cedar shake, metal and slate roofs, for homes and businesses. Every roof clean includes the gutters.

A tile-roofed house with the Mossbrothers trailer parked out front beside a red Japanese maple.

Roof cleaning & moss removal

The bulk moss is brushed off by hand, then a soft-wash treatment kills what is still rooted in the shingles and clears the black streaks.

Included

  • Moss removal with a stiff brush, never pressure
  • Soft-wash moss treatment
  • Gutter cleaning and downspout flush
  • Grounds and plants rinsed
  • A gloved hand lifting a clump of wet leaves and moss out of a roof gutter.

    Gutter cleaning

    Gutters cleared of moss and debris and the downspouts flushed, so rain drains and the fascia stays dry. Included with every roof clean, or on its own; once a year is the minimum.

  • A navy two-storey house with white trim after a house wash, under a clear blue sky.

    House washing

    A low‑pressure soft wash that lifts mold, algae, dirt and cobwebs without harming paint, siding or window seals. Every house wash includes gutter brightening and the windows.

  • A long patterned concrete driveway, cleaned and sealed, leading to a large two-storey house.

    Concrete cleaning & sealing

    Driveways, walkways and patios treated before and after surface cleaning so the mold stays gone, oil and rust stains lifted, then sealed against the rain.

  • Rows of clean, wet solar panels on a roof, red autumn trees behind them.

    Solar panel cleaning

    Pollen and mildew cut what your panels produce. A yearly clean with a soft brush and a filtered‑water rinse keeps them working without scratching the coating.

  • A house lit with warm white Christmas lights at night, the Mossbrothers trailer parked in front.

    Holiday lighting

    Christmas lights provided, put up, looked after and taken down, custom cut to fit your house. LED or incandescent, in warm white, multicolor, or red & white.

Also offered

  • Deck & fence cleaning
  • Window cleaning
  • Oil stain removal
  • Vinyl shutter oxidation removal & restore
  • Patio cover cleaning
  • Commercial pressure washing

How a roof clean works

Five steps, and no pressure washer

The same sequence on every roof. Nothing is blasted, and nothing is left behind.

A crew member in green on a grey shingle roof, working a hose line down from the ridge, a ladder against the house below.
  1. Brush off the bulk moss

    Thick moss comes off with a stiff brush, worked gently so the shingles are not scraped.

  2. Blow off the roof

    Loose moss and debris are blown clear so the treatment reaches the shingles.

  3. Clean the gutters

    The gutters are cleaned out and the downspouts flushed, so the moss that came off the roof does not clog them.

  4. Apply the soft‑wash treatment

    A metered mix of sodium hypochlorite and surfactant kills the moss, mold and algae still rooted in the roof. The black streaks go with it.

  5. Clean up and rinse

    We clear the grounds, rinse your plants and any siding the runoff touched, and leave nothing behind.

A clean, wet roof partway through a soft wash, the treatment hose running across it and the spray wand at the edge.

Soft wash, never pressure

Pressure washing a roof strips the granules off the shingles, can cause leaks, and can void the shingle warranty. It does nothing to stop the moss growing back.

Soft washing is low pressure. A metered mix of 6% sodium hypochlorite and surfactant kills moss, mold and algae where they grow, and it is the cleaning method roofing manufacturers recommend. One treatment keeps moss off for up to 3 years.

Before we leave, the grounds are cleaned up and the plants and siding are rinsed. We guarantee our work.

Moss on the roof? Get a free estimate.

Call, text or email. I’ll quote in person or from satellite view.

A two-storey house outlined in warm white Christmas lights at blue hour.

Holiday lighting

Christmas lights, and you stay off the roof

We provide, install, maintain and take down Christmas lights, custom cut to fit your house. You get the lights without the cold, slippery roof.

Not sure what you want? We can help you plan the design.

Book holiday lights
  • Minleon LED faceted or incandescent bulbs
  • C9, C7 and mini lights
  • Warm white, multicolor, or red & white
  • Provided, installed, maintained and removed
  • Custom cut to your roofline
  • A two-storey house at night with white lights along every roofline and around the garage doors.
  • A blue house with multicolor lights along the roofline and a Mossbrothers Christmas lights sign in the yard.

Serving Snohomish County from Lake Stevens

Roof cleaning and exterior cleaning in these towns and the surrounding area.

Not on the list? Call anyway. I can bid in person or remotely from Google satellite view.

  • Lake StevensHome base
  • Snohomish
  • Monroe
  • Maltby
  • Bothell
  • Everett
  • Lynnwood
  • Mill Creek
  • Mukilteo
  • Tulalip
  • Marysville
  • Smokey Point
  • Arlington
  • Granite Falls
  • Edmonds
  • Camano Island
  • Mount Vernon
  • Stanwood

What people ask before booking

What is soft washing?

A low-pressure cleaning method. A mix of sodium hypochlorite and surfactant kills moss, mold and algae, and a gentle rinse carries it away. It is safe for roofs, siding, gutters, decks and driveways.

Why not pressure wash my roof?

High pressure knocks the granules off your shingles, can cause leaks and takes years off the roof. It can also void the shingle warranty, and it does nothing to stop the moss growing back. Roofing manufacturers recommend soft washing instead.

How long does a roof treatment last?

A soft-wash treatment keeps moss away for up to 3 years. Moss grows fast in the Pacific Northwest, so plan on a roof clean every few years.

How often should my gutters be cleaned?

At least once a year. Clogged gutters overflow, rot the fascia boards, leak at the corners and can sag or pull away from the house. Gutter cleaning is included with every roof clean.

Can you give me an estimate without coming out?

Yes. I can bid in person, or remotely from Google satellite view. Either way the estimate is free.

What kinds of roofs do you clean?

Composition, tile, cedar shake, metal and slate.

Do you take commercial work?

Yes. We have cleaned bank drive-throughs, a church, parking lots, gas stations and commercial buildings, with 8‑gallon‑per‑minute machines built for large surfaces.

When should concrete be sealed?

Every couple of years. The concrete is cleaned first and left to dry for at least 12 hours, and sealer cures best at around 65–75°F.

Get a free estimate

Call, text or email me directly, whichever is easiest. I can give you a bid in person or from Google satellite view.

Based in

Lake Stevens, WA 98258