Roof Soft Washing in St. Augustine
Those dark streaks running down your roof aren't just dirt — they're Gloeocapsa magma, a type of algae that feeds on the limestone filler in asphalt shingles. Left untreated, this algae shortens your roof's lifespan and drives up cooling costs by reducing your roof's ability to reflect heat. Our roof soft washing service safely eliminates algae, moss, and lichen without the damaging high pressure that voids manufacturer warranties.

What Causes Black Streaks on My Roof?
A dirty roof isn't just an eyesore — it's actively degrading. Algae and moss retain moisture against your shingles, accelerating granule loss and shortening roof life by years. Dark streaks absorb more heat, which can increase your attic temperature and raise your cooling bills during Florida's long summers. Many homeowner associations in St. Augustine require roofs to be kept clean, and a stained roof can trigger violation notices. Roof soft washing restores your roof's appearance and performance, protecting one of your home's most expensive components.
How Does Roof Soft Washing Work Without Damaging Shingles?
We never use high pressure on roofs. Our soft wash process applies a specialized cleaning solution at low pressure that kills algae, moss, and lichen down to the root. The solution is applied evenly across the roof surface and allowed to dwell before a gentle rinse. This method is approved by shingle manufacturers including GAF, CertainTeed, and Owens Corning — unlike pressure washing, which can void your warranty by stripping protective granules. We clean asphalt shingle, tile, metal, and flat roofs, adjusting our approach and solutions for each material.
How Long Does a Roof Stay Clean After Soft Washing?
Our roof soft wash doesn't just clean the surface — it kills the organisms causing the stains. This means your roof stays cleaner longer compared to methods that only remove surface discoloration. Most roofs stay visibly clean for 2 to 3 years after our treatment. We also offer maintenance plans for homeowners who want to keep their roof in peak condition year-round. A clean roof enhances curb appeal, maintains property value, and ensures your roof performs as designed for its full expected lifespan.
Roof Soft Wash Pricing
Prices are estimates for the St. Augustine and Northeast Florida area. Contact us for a free, no-obligation quote for your specific project.
Frequently Asked Questions
Yes, which is why we never use high pressure on roofs. High-pressure washing strips the protective granules from shingles and can crack tiles. Our soft wash method is manufacturer-approved and safe for all roof types.
Those streaks are caused by Gloeocapsa magma, a blue-green algae that feeds on limestone in shingles. It's extremely common in Florida's humid climate and spreads from roof to roof via airborne spores.
Most roofs stay visibly clean for 2 to 3 years after treatment. Results vary based on shade, humidity, and proximity to trees.
Yes. We protect your landscaping during application and use solutions that break down safely. Your gutters are rinsed clean as part of the process.
Get a Free Roof Cleaning Quote
Fast, professional roof soft wash in St. Augustine and Northeast Florida. No obligation.