San Jose Roof Washing
Soft-wash roof cleaning, kill algae and moss, restore curb appeal, protect your shingles.
"We used AG Windows and Gutters for roof washing and the black streaks on our shingles were dramatically reduced. The crew was professional and careful."
Verified Google Review
AG Windows and Gutters provides professional roof washing for San Jose and South Bay homes. Using soft-wash techniques approved by major shingle manufacturers, we safely kill black streaks (gloeocapsa magma algae), moss, and lichen without high-pressure damage to your shingles or tiles.
Why Roofs Need Soft Washing
Those black streaks running down asphalt shingles aren't dirt, they're a living algae called gloeocapsa magma that feeds on the limestone in modern shingles. Left untreated, it shortens roof life, raises cooling costs, and tanks curb appeal. Pressure washing strips the granules off your shingles and voids warranties. Soft washing kills the organism at the root and rinses it away gently.
Our crew applies a biodegradable cleaning solution, lets it dwell to kill algae and moss, then rinses gently. Landscaping is pre-rinsed and protected throughout. Most roofs look dramatically better immediately and continue to brighten as remaining algae dies off in the following weeks.
What's Included
- Soft-wash treatment of full roof surface
- Targeted moss and lichen removal
- Killing of gloeocapsa magma algae at the root
- Gentle rinse, no shingle granule loss
- Landscaping pre-rinse and protection
- Gutter rinse to clear any debris from cleaning
Our Process
Free Quote in Minutes
Start a chat, share a few details about your home, and we send a personalized quote, usually within 15 minutes.
Easy Scheduling
Pick a date that works for you. Most San Jose addresses can be scheduled within 3–7 days.
We Show Up On Time
Uniformed crew arrives in a marked truck, ready to work. We protect your floors and landscaping from start to finish.
Guaranteed Results
Every job is inspected before we leave. If you spot an issue after we leave, we come back free.
Fully Insured · Background-Checked Crews
Every AG technician is uniformed, drug-tested, and trained on our streak-free process.
Roof Washing FAQs
The questions San Jose homeowners ask us most about roof washing.
Claim Your 5 Windows Free Special Today
*Limit 5 windows per customer
New customers get 5 windows cleaned free (interior + exterior) with any first-time service. Tell us about your home and we'll send you a personalized quote in minutes.
