No. 01
Black streaks on the roof
Those dark streaks are usually an algae called Gloeocapsa magma. It loves our humid, shady roofs, and left alone it can shorten the life of your shingles. We soft wash it off at low pressure, no blasting.
League City field guide to grime
Text Anthony a photo of it. He'll tell you what it is, how he'd clean it, and honestly whether it will come out.

Real jobs, photographed by Anthony.



“Very honest about what stains could be removed, and which wouldn't completely clear.”
“He listened and made sure to not just power wash it off.”
“Anthony takes before and after photos and even has a drone.”
Field guide
What it is, and how Tidal Wash cleans it. Not sure which one you have? Text Anthony a photo.
No. 01
Those dark streaks are usually an algae called Gloeocapsa magma. It loves our humid, shady roofs, and left alone it can shorten the life of your shingles. We soft wash it off at low pressure, no blasting.

No. 02
That's mold, mildew, algae and pollen. We clean it with a soft wash: a cleaning solution and a low-pressure rinse that's safe for vinyl, stucco, brick and Hardie board.
No. 03
That chalky white stuff is efflorescence, a mineral residue left behind when moisture moves through masonry and dries at the surface. It often shows up after rain. We remove it and help keep it from coming back.
No. 04
Rust stains usually come from iron-rich sprinkler water, old metal fixtures or fertilizer. We remove rust from concrete and brick. How much comes out depends on how deep and how old the stain is, and we'll tell you up front.

No. 05
Concrete can take real pressure. We wash driveways, sidewalks and patios to lift oil, grease, grime and algae.
Soft wash removal of algae, moss and mold without damaging shingles.
Siding, brick, stucco, gutters and eaves, cleaned at low pressure.
Concrete, stone and wood surfaces washed clean, plus wood fence cleaning and sealing.
Rust, oil, grease and efflorescence on concrete and brick.
Pure water cleaning with deionized water for a streak-free finish.
Installed, maintained, taken down and stored. If a light goes out, we fix it.
From what customers say in their reviews.
Shows up on time, when he said he would.
Honest about which stains will come out and which won't.
No rushing: he double checks the work and comes back for problem spots.
Tidal Wash is a locally owned exterior cleaning business in League City, run by Anthony. We soft wash roofs and siding at low pressure and save high pressure for concrete. We're fully insured and work on homes, businesses and HOA properties.
Based in League City. Homes, businesses and HOA properties across the area.
Phone and text: (713) 213-7787
Snap a photo and text it to Anthony. He’ll tell you what it is and whether it will come out.