Roof Cleaning

Done the right way.

Hawaii's climate causes algae, moss, and dark staining to build up on roofs faster than almost anywhere else in the country, thanks to salt air, humidity, and constant sun. At Big Wave, we use low pressure soft washing across every roof type, tailored to the specific material, so your roof gets clean without unnecessary wear.

Not sure what type of roof you have? Find yours below.

View of a residential neighborhood with single-story houses, green trees, and palm trees in a valley surrounded by mountains covered in clouds, seen from a rooftop with solar panels and vents.

Flat

Flat roofs collect standing water, debris, and organic growth faster than sloped roofs, especially in Hawaii's rainy season. We clear debris, treat algae and mildew buildup with a safe cleaning solution, and rinse thoroughly to restore drainage and prevent long-term ponding damage.

Tile

Tile roofs (like Monier concrete tile) are durable but porous, which means algae and moss can work into the surface over time. We soft wash tile roofs to lift embedded growth and restore their original color, without the cracking or granule loss that high-pressure equipment can cause.

A backyard scene showing a house with a shingled roof and white support columns, surrounded by tall palm trees and lush greenery, with a bright blue sky and some clouds in the background.

Wood Shake

Wood shake is the most delicate roof material we work with. It absorbs moisture and can splinter or warp under high pressure. We use the gentlest end of our soft wash process here, paired with a wood-safe treatment that removes moss and algae while protecting the shingles' natural texture and lifespan.

Metal

Metal roofs handle pressure better than other materials, but rust, oxidation, and mineral streaking still build up fast in Hawaii's salt air. We soft wash metal roofs to remove buildup and restore their finish, using techniques that won't scratch coatings or accelerate corrosion.

Side-by-side images of a residential neighborhood viewed from a rooftop during rainy weather, showing houses, trees, parked cars, and cloudy skies.

Asphalt Shingle

Asphalt shingles are the most damage-prone roof type when cleaned incorrectly. High pressure can shorten the roof's life. We use a low-pressure soft wash with an algaecide solution to kill black streaks and moss at the root, then rinse clean without ever touching the shingles with force.

See the Difference: O’ahu Roof Cleaning

Two workers in blue jackets and gray pants repairing a shingled roof under a clear blue sky with palm trees and ocean in the background.

Aerial view of a house with a weathered, stained roof, some areas covered with snow or ice, and other roofs nearby with solar panels, in a neighborhood with trees and hills in the background.

Red tiled rooftops with solar panels, green trees, and mountains in the background under a partly cloudy sky.

A residential neighborhood street with houses, trees, parked cars, and cloudy sky, taken from a rooftop view.

View of a metal rooftop with several skylights, surrounded by lush green trees and mountains in the background. Several vehicles are parked nearby, and a person is visible near the vehicles. The sky is partly cloudy.

A person cleaning a metal roof with a hose, with a landscape of trees and mountains in the background during sunset.

Book an estimate

Questions before you book

Most Oʻahu roofs need cleaning every 1 to 2 years. Hawaii's salt air, humidity, and shade from trees speed up algae and moss growth compared to mainland climates, so homes near the coast or under heavy tree cover often need cleaning closer to once a year.

How often should I clean my roof in Hawaii?

1 What does roof cleaning cost on O’ahu?

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Roof cleaning cost depends on roof size, material, pitch, and how much buildup needs to be removed. Big Wave provides a free on-site estimate so you get an accurate price based on your specific roof, not a generic quote.

Can you clean my solar panels at the same time as my roof?

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Yes. If you have solar panels installed on your roof, Big Wave can clean both in the same visit, saving you a separate appointment and helping your panels operate at full efficiency.

Yes, when done with low-pressure soft washing instead of high-pressure equipment. Big Wave uses different techniques for each roof material, since asphalt shingles, tile, metal, and wood shake all respond differently to pressure and cleaning solutions.

Is roof cleaning safe for asphalt shingles, tile, and metal roofs?

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