Trusted since 2001 · Same-day response for emergencies · Call 951-458-6466
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Who They're For and What They Solve
Roof cleaning is the removal of algae, moss, and lichen from a roof surface using a soft wash process. Low-pressure equipment applies a cleaning solution that kills the organism at the root, then rinses gently. No pressure washing, because high pressure strips the protective granules off asphalt shingles.
Most homeowners need it when dark streaks appear across the shingles or green patches start spreading near the north-facing slopes. Sellers book it before listing. Others call after an HOA notice or when an insurance inspector flags the growth during a routine property review.
Left alone, these organisms hold moisture against the roof surface and accelerate granule loss. Moss roots work under shingle edges and lift them, creating entry points for water. A roof that could have lasted another decade starts failing early, and replacement costs far more than cleaning.
Is It Time?
Most people spot one of these from the driveway.
Our Services
We handle every type of organic growth and every common roof surface.
Our standard method on every job. Low-pressure equipment applies a cleaning solution that kills algae and moss at the root, then we rinse gently. No mechanical scrubbing, no pressure on the shingles. This is the approach shingle manufacturers themselves recommend.
Moss and lichen grow root structures into the shingle surface, so they need dwell time rather than force. We apply treatment, let it work, then rinse. Removal is complete without prying, scraping, or lifting shingle edges.
Those black streaks come from Gloeocapsa magma, a hardy blue-green algae that feeds on limestone filler in shingles. Our solution kills the colony rather than just rinsing the surface, so the staining does not reappear within weeks.
Concrete tile, clay tile, and metal roofing each respond differently to cleaning. Tile needs care around joints and underlayment. Metal needs solution compatible with the coating. We adjust method and pressure to match the surface.
Not sure which approach your situation needs? We assess first and recommend only what’s necessary, no upsells.
Why Homeowners Choose Mr. Local Services
We have never put a pressure washer on an asphalt shingle roof in fifteen years. Low-pressure application removes growth without displacing granules, which is what protects your roof from UV breakdown.
Our methods follow shingle manufacturer guidance, so cleaning does not void your warranty. We carry two million in general liability plus workers' compensation, so you hold no liability for anyone on your roof.
You get a written number after the assessment and that is what you pay. No change orders, no discovered problems, no line items added once the truck is in your driveway.
We pre-wet and tarp the beds around your foundation before any solution goes up. Runoff gets managed, plants get rinsed, and we walk the property with you before leaving.
How It Works
Call 951-458-6466 and we schedule an on-site look within 48 hours. We identify the growth type, check shingle condition, and photograph what we find.
You receive a flat price based on roof size, pitch, access, and growth severity. Nothing starts until you approve it in writing.
We tarp landscaping, pre-wet surrounding plants, then apply solution at low pressure. Dwell time varies by growth type. Rinse follows once the organism is neutralized.
We walk the property with you, rinse anything that needs it, and confirm results. Our work is guaranteed, and we come back if something was missed.
Pricing
We publish real numbers because dodging the question wastes everyone’s time. Most single-family roof cleaning runs $375 to $850, with the majority of jobs landing near $550.
Four things move that number: total roof square footage, pitch and accessibility (steep or multi-story takes longer and requires more safety setup), growth severity (light streaking versus established moss), and surface type (tile and metal need different handling than asphalt shingle).
You get a flat written quote after the free assessment. That number does not change once we start.
Not with soft washing. Damage comes from pressure washing, which blasts granules off the shingle surface. We use low pressure only.
No. Soft washing is the method shingle manufacturers recommend. Pressure washing is what typically voids coverage.
Most roofs stay visibly clean for two to four years, depending on shade, humidity, and tree coverage over the roof.
Most single-family roofs finish in two to four hours. Heavy moss or large multi-story roofs may need a full day.
Often yes. Soft wash equipment reaches from ladders and the ground on many roof designs, reducing foot traffic on shingles.
Gloeocapsa magma, a blue-green algae that feeds on limestone filler in asphalt shingles. It is not dirt and will not rinse off.
No. We pre-wet and tarp landscaping before application, then rinse everything afterward as part of the process.
Call or text 951-458-6466 for a free assessment within 48 hours. You get a flat written quote before any work begins.
Fifteen years of soft wash roof cleaning, fully insured, with a flat quote before we start. See what your roof actually looks like under the algae.
