Black streaks and gloeocapsa algae lifted off tile, shingle and metal with a controlled low-PSI soft wash — no cracked tiles, no stripped granules, no voided warranty.
A low-pressure soft wash that kills the algae and clears the black streaks — priced on your actual roof, measured by satellite before we quote.

BeforeAfterYears of gloeocapsa algae and black streaking lifted off — with a low-pressure soft wash and the right chemistry, never a hot jet that cracks tiles or strips granules.
"If you want a professional who has ALL the RIGHT equipment and pays attention to detail, call Premier today!"
"They did a wonderful job accommodating my needs and provided prompt service. Clear communication, and fantastic work."
Yes. Soft washing uses low pressure and a cleaning solution, so architectural shingles keep their granules and their seal — nothing that could void your roof warranty.
Never. High pressure cracks tiles and strips shingle granules. We only soft-wash — the chemistry kills the algae and black streaks, and a gentle rinse clears it away.
No. We pre-wet plants, control the runoff and give everything a plant-safe rinse afterward, so your roof gets clean without harming what's below it.
That's gloeocapsa algae — a living organism that feeds on the roof and spreads. Soft washing kills it at the root, so the streaks are gone, not just faded.
Most roofs are done in 2–4 hours and clean the same day. Larger, steeper or heavily-streaked roofs can take a little longer.
Send your address — we'll measure it by satellite and reply with a real number.