
Why roofs streak, and how we clean them
In a climate as warm and humid as Seminole County's, algae grows on the shady parts of a roof and spreads a little further every year. On asphalt shingles it shows as black stripes running toward the gutters. On barrel tile, the terracotta turns dark and patchy. Either way, it holds moisture against the roof.
High pressure is the wrong tool for the job. It can blast the granules off shingles and crack or shift tiles. Roofs get soft washing instead: a cleaning solution breaks down the growth, and a low-pressure rinse takes it away.
Tsunami Services has photos of both kinds. One is a barrel tile roof beside a screened pool, dark before and clean terracotta after. The other is a shingle roof that went from black-streaked to an even gray.
See Roof Before and AftersFrom the ridge down to the gutters
We clean roofs across our service areas. Tell us the roof type and how many stories, and send a photo taken from the yard.
Asphalt shingle roofs
The classic black-streak problem. A soft wash clears it without scrubbing away the granules.
Barrel and concrete tile
Tile soaks up stains and shows them in patches. Cleaning brings back one even color.
Gutters and fascia
While the roof is being cleaned, add gutter and fascia cleaning so the roofline matches.
Solar panels
Panels on a dirty roof collect the same grime. Solar panel cleaning can go on the same visit.
“Noel was incredibly helpful throughout the entire process, and the roof looks brand new.”
Robert Reed Google reviewThree steps to a cleaner roof
You don't need to climb up there. A photo from the ground is enough to start.
Send a roof photo
Tell us whether it's shingle or tile, how many stories the house is, and where the streaks are worst.
Get your estimate
We'll quote the roof and anything else you want added, like gutters or solar panels.
Soft wash and rinse
The solution goes on, the growth breaks down, and a gentle rinse clears it. A neutralizer protects the plants below.
While we're at your house

Soft washing
A clean roof over streaky walls looks half finished. Wash the walls with the same method.

Pressure washing
Runoff from a dirty roof stains the driveway. Clean both in one trip.

Paver sealing
Finish the outside with a patio that's cleaned, sealed and ready for the season.
What to know before your roof gets cleaned
A soft wash is used precisely because it doesn't. The low-pressure rinse leaves shingle granules in place and doesn't knock tiles loose. If you know of cracked tiles or lifting shingles, mention them so we can work around them.
Black streaks are a cleaning problem, not a sign the roof is worn out. Cleaning won't fix leaks, missing shingles or broken tiles, though. If you're seeing water inside the house, call a roofer first.
That depends on shade and trees. A roof under live oaks streaks again sooner than one in full sun, and the growth comes back gradually rather than all at once. Ask about a yearly plan if you want it kept up.
Yes. Gutter and fascia cleaning and solar panel cleaning are both on our list, and booking several services together brings the total down. Add them to your request.

