Roof Streaks: What to Know Before Requesting Cleaning
Dark streaks and visible buildup can change how a roof looks. If you are considering cleaning, start by describing what you can see safely from the ground and the roof material, if you know it.
What might cause dark streaks?
Algae can cause dark streaking on roofs, but a photo or description alone does not establish the cause of every mark. If you are concerned about damage, leaks, or the roof's condition, contact a qualified roofing professional.
How does Delta approach roof washing?
Delta offers soft wash roof cleaning for black streaking, algae, and moss. The approach avoids full-strength pressure washing on the roof. Ask Delta to confirm whether your particular roof and requested scope are suitable.
What should be included in the request?
Share the property address, roof material if known, and where you see buildup. Ground-level photos can help communicate the request; do not climb onto the roof to take them.
Mention known damage and any manufacturer or warranty instructions. Ask which roof areas are included and whether other work, such as gutter clean-out, requires a separate quote.