09/08/2026
๐ ๐ฆ WHAT ARE THOSE BLACK STREAKS ON YOUR ROOF?
Ever looked at a roof and noticed dark black streaks running down the shingles?
It may not be dirt.
Those streaks are often caused by algae growth, which can spread across the roof and make an otherwise well-maintained home look aged and neglected.
๐ง HERE'S SOMETHING MANY HOMEOWNERS DON'T KNOW:
Roof cleaning isn't the same as pressure washing concrete.
Roof shingles can be damaged by excessive pressure. That's why professional roof cleaning typically uses a soft-wash approach designed to remove organic growth without aggressively blasting the shingles.
A proper roof-cleaning process should take into consideration:
๐น Roofing material
๐น Condition and age of the roof
๐น Type of organic growth
๐น Appropriate cleaning solution
๐น Application method
๐น Proper rinsing and surrounding-property protection
๐ก The goal isn't to blast your roofโthe goal is to clean it safely.
At Bison Blast Pressure Washing, we proudly serve Brookings, SD & surrounding areas with professional residential and commercial exterior cleaning.
๐ก House Washing
๐ Roof Cleaning
๐ Driveways & Concrete
๐ฟ Decks & Patios
๐ช Windows
๐๏ธ Garbage Bin Cleaning
๐ RV & Camper Cleaning
๐ข Commercial Exterior Cleaning
๐ธ LOOK UP!
If your roof has noticeable black streaks, algae, moss, or other buildup, it may be time to have it professionally evaluated.
๐ฒ Message Bison Blast Pressure Washing today for a FREE estimate!
๐ฅ BISON BLAST PRESSURE WASHING
Blasting Away Dirt. Restoring Pride.
๐ QUESTION: Have you ever wondered what those black streaks on your roof actually are?