Wildland-Urban Interface Zone
Roof cleaning, gutter clearing & rooftop sprinklers — the complete home hardening package for South Bay homeowners in WUI zones.
Your roof and gutters are your home's first line of defense against wildfire embers. ORS Clean removes the fuel before fire season — keeping your home, your insurance, and your family safer.
Fire season is here — most homes are ember-ready in one visit, booked within 48 hours.
Know Your Risk
A Wildland-Urban Interface (WUI) zone is any area where homes meet or intermingle with undeveloped wildland vegetation. California has more WUI-zone homes than any other state — and Santa Clara and Santa Cruz counties are among the most at-risk regions in the Bay Area. If your home backs up to open hills, canyons, or undeveloped land, you're almost certainly in or adjacent to a WUI zone.
Cal Fire requires homes in WUI zones to maintain defensible space — a cleared buffer zone around the property. But defensible space alone isn't enough. Your roof and gutters must be free of dry organic debris, and your exterior surfaces must be clean — because embers travel up to a mile ahead of a fire front and can land anywhere on your property.
Homes backing up to the Diablo Range foothills face direct ember cast risk during Diablo wind events. Annual roof and gutter cleaning before dry season is critical.
Heavy oak and madrone tree coverage accelerates roof debris accumulation. Many homeowners in Los Gatos and Saratoga have received insurance non-renewal notices due to roof condition.
Evergreen, Silver Creek, and Almaden Valley sit at the base of WUI-adjacent terrain. Valley wind patterns can carry embers from grassland fires directly into these neighborhoods.
Dry grassland and agricultural land surrounding both cities creates high ember cast risk during late summer and fall. Roof and gutter maintenance before October is strongly recommended.
Service Areas
Each city page includes local fire risk context, WUI zone breakdown, Level 1–3 recommendations specific to that area, and neighborhood-level guidance.
Understanding how wildfires actually destroy homes changes everything about preparation.
A wildfire front sends millions of burning embers ahead of itself — sometimes up to a mile. Your home doesn't need to be next to the fire to be at risk.
Dry moss, lichen, leaf litter, and debris on your roof and in your gutters catch immediately. This is the most common ignition pathway — not flames touching your walls.
Burning debris in a full gutter creates a channel of flame that runs along the roofline and drops embers or flame directly onto fascia boards and attic vents.
Exterior walls coated in years of organic buildup — pollen, dust, dead organic material — are measurably more vulnerable to ember ignition than clean siding.
Rooftop sprinkler systems activate before or during a fire event, keeping the entire roof surface wet. Combined with a clean roof, this is the highest level of passive protection available to a homeowner.
Choose your protection
Three clear levels — from the annual ember-season minimum to a complete active-defense system. Not sure which fits? Get a free assessment.
The annual minimum every home should complete before fire season — removes the two biggest ignition risks in a single visit.
Best for All WUI-adjacent homes — the annual minimum before dry season
Everything in Level 1, plus ember barrier installation on attic vents — sealing the most common entry point embers use to ignite a home from the inside.
Best for Homes near open space, heavily treed lots, hillside properties
The complete protection system for homes in or directly adjacent to WUI zones — cleaning, ember barriers, and an active water defense system.
Best for WUI-adjacent homes, direct open space boundary, hillside properties
What the Bay Area customers say
"My insurance was going to cancel me over moss and algae on my roof. Matt reviewed my home on Google Earth, came the next day, and scheduled us within 3 days. He cleaned the roof and solar panels and sent photos for my insurance."MMMichelle M.Verified Google Review
"I had been looking for a reputable company to clean mold and lichen off my roofs. Matt responded immediately — all the 5-star reviews are correct. Roofs and gutters are clean and spotless, and the equipment was quiet."MBMarjorie B.Verified Google Review
Common questions
Dry moss, lichen, leaf litter, and organic debris on a roof are highly flammable. When wildfire embers land on a debris-covered roof, ignition is almost immediate. A clean roof is dramatically less likely to catch from ember cast — which is how 90% of homes in wildland-urban interface fires are lost, according to Cal Fire research.
Yes, in many cases. California insurers in high fire risk zones increasingly require documented evidence of roof and exterior maintenance as a condition of coverage or renewal. ORS Clean provides a before-and-after photo report on every job that you can submit directly to your insurance agent. We've helped multiple customers in Morgan Hill, Gilroy, and Los Gatos retain or restore coverage this way.
A rooftop sprinkler system is a network of sprinkler heads at the roofline that can be manually or automatically activated to saturate the roof surface during a fire event. They are most valuable for homes in or near WUI zones — the Gilroy and Morgan Hill foothills, Los Gatos hills, and Saratoga are all areas where we strongly recommend them. A clean roof plus a rooftop sprinkler system is the highest level of passive fire protection a homeowner can achieve.
For homes in or near WUI zones, twice per year is ideal — once in spring before dry season (April–May) to clear winter buildup, and once in late fall (October–November) after leaf drop. At minimum, a pre-summer clean before California's fire season begins significantly reduces risk. We can set you up on a recurring schedule so you never have to remember to call.
Yes. Our soft-wash process uses low pressure and biodegradable cleaning solutions — it does not damage shingles, void roofing warranties, or force water under tiles. High-pressure washing on roofs is damaging and should be avoided. Soft-wash is the method recommended by roofing manufacturers and insurance companies alike.
Service area
Don’t wait for a red-flag warning. We remove the biggest ignition risks in a single visit and send the before-and-after photo documentation your insurer wants. Matt replies within 30 minutes.
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