Those black streaks are a living algae, not dirt, and high pressure does not remove them. A soft wash kills the growth at the root, and careful foot placement on the lower third of the tile means nothing cracks and no shingle loses its granules.
Quick answer. Roof cleaning is the soft wash treatment that clears black algae streaking, moss colonies and lichen crust off concrete tile, clay tile, asphalt shingle and metal roofs for homeowners across Fresno and the Central Valley. Lichen is the one that does real damage, because it roots into the tile surface and down between shingle granules, so blasting it off does not remove lichen so much as remove the roof material it is gripping, and a properly soft washed roof keeps lightening for weeks afterward as the dead growth releases. Roof size, pitch, material, stories and how far the growth has gotten are what the quote is built on, and every slope gets treated including the shaded north face, which is always the worst and is the one a cheap crew skips.
What We Clean
Residential Roof Cleaning Services
Valley Wash Pros soft washes concrete tile, clay tile, asphalt shingle and metal roofs across the Central Valley, clearing black algae streaking, moss and lichen without ever putting high pressure on the roof.
The Short Answer
Roof cleaning done right is a soft wash, not a pressure wash. A cleaning solution goes on at low pressure, kills the algae, moss and lichen at the root, and rinses clear. Nothing cracks a tile, strips shingle granules or forces water up under the courses. Valley Wash Pros treats every slope including the shaded north face, pre-soaks the landscaping below, and guarantees the result. Free estimates across Fresno and the Central Valley, 24/7. Call (559) 975-8124.
Your roof is the largest single surface on the property and the most expensive one to replace. It is also the surface you cannot inspect from the ground, which is why it gets handed to whoever quoted cheapest and why Valley homeowners end up with cracked tiles, stripped granules and streaks that come back within a season. You will never see how the crew walked your roof. That is exactly why the method matters more here than anywhere else on the house.
What a full roof cleaning covers
Soft wash treatment of the entire roof, whether concrete tile, clay tile, asphalt shingle or metal
Removal of black algae streaking, moss colonies and lichen crust
Blow-off of leaves, needles and loose debris so the treatment reaches the roof surface, not a mat sitting on top of it
Every slope, including the shaded north face where growth is always heaviest, not only the side that shows from the street
Pre-soaking and shielding of all landscaping below the roofline, with runoff managed for the whole job
Cleaning a roof is not decoration. Algae, moss and lichen physically degrade the material they live on, and removing them is the cheapest way to protect the most expensive surface you own.
A Longer Working Life For The RoofMoss, algae and lichen hold moisture against the surface around the clock, and lichen anchors into tile and down between shingle granules. When it dries and tears free it takes roof material with it. Cleaning on a sensible cycle costs a small fraction of replacing tile or shingle early.
An Answer For Your Insurance LetterSome California homeowners have been asked by their carrier to clean the roof as a condition of renewal, usually where moss and debris are treated as a fire concern. If you have received a letter like that, send us a photo of it and we will quote to what it asks for.
Water That Goes Where It ShouldMoss pads and packed debris hold water on the roof and dam it in the valleys instead of letting it run. Standing water is how a sound roof starts leaking, and clearing the growth is what stops it.
The Biggest Surface On Your Home, RestoredFrom the curb, the roof is often the largest thing anyone sees. Streaking reads as neglect to buyers, appraisers and neighbors long before anybody inspects anything.
A Roof That Reflects Instead Of AbsorbsDark algae staining cuts how much sun a light roof throws back, and a Valley roof already bakes at 100 degrees plus all summer. Clearing it helps the attic run cooler. It is a real effect, not a miracle one, and we will not pitch it as a utility bill fix.
Clear Gutters And ValleysRoof debris, dead growth and shed granules end up in the gutters and valleys. Handling the roof and the gutters on the same visit is how the water actually gets somewhere.
Less Growth Around The HouseMold, mildew and lichen on the roof shed spores onto everything downhill of it, including the north wall, the patio cover and the walkway. Treating the highest surface first is why the rest of the property stays clean longer.
The Valley Wash Pros Method
Why Soft Wash My Roof?
Because soft washing is the only method that kills what is growing without damaging what it is growing on. Everything else is either scraping or blasting, and both of those cost you roof.
Soft washing a roof is thorough, and it is effective. The solution goes on at low pressure, closer to what comes out of a garden hose than what a concrete gun makes, and then it is given time to work. That dwell time is the part people miss. The chemistry has to sit on the algae, moss and lichen long enough to kill them at the root. Rinse early and all you have done is wet the roof. Dead growth then lets go and rinses away, and heavier moss and lichen keep lightening and shedding over the following weeks with wind and rain, rather than being torn off with roof material still attached.
That last part is worth saying plainly, because it sets your expectations honestly. On a roof carrying thick moss, it will not look finished the hour we drive away. The color keeps coming back over the next few weeks as the dead growth releases and washes off. Anyone promising a bare roof by dinnertime is planning to scrape it or blast it.
Pressure washing does the opposite on both counts. It damages the roof, meaning cracked tile, stripped granules, water forced under the courses and warranties put at risk, and it does not actually remove the organism. It shears the visible layer off and leaves the colony rooted, which is why a blasted roof looks clean for a season and then streaks again. That is the whole argument in one sentence: kill it and it stays gone, blast it and you have already booked the same job for next year.
The rest of what follows is how we actually work a roof, because roof cleaning is judged on what you cannot see from the ground.
Low pressure on the roof, no exceptions
We never put high pressure on tile or shingle. Not dialed down, not on a wide tip, not ever. Shingles are only shingles because of the mineral granules bonded to the surface, and a pressure washer takes them off by the handful. Tile cracks. Water driven uphill gets under the courses, past the laps, and onto the underlayment where it has no way out. High pressure also cleans badly: it shears the visible growth off the top and leaves the organism alive underneath, primed to regrow by the next fog season.
Tile gets walk pads and planned foot placement
A tile is only supported where it laps the course below it. The middle of a tile is a bridge over open air, and a boot in the middle of that bridge is a concentrated point load, which is how tile cracks. So we walk the lower third of the tile, where it sits on the one underneath, and we step across the battens rather than between them. Walk pads spread the load further. Every pass is planned before we go up so the roof gets walked as little as the job allows. It is slower. It is also why broken tile is not part of how we work.
Every slope, including the one nobody sees
Shaded and north-facing slopes carry the worst growth for a plain reason: they get the least sun, so the tule fog moisture that settles overnight is still sitting there in the afternoon, long after the south slope dried off. That slope is also the one nobody can see from the curb, which makes it the first thing skipped by a crew working to a fixed number. Treating only the street-facing slopes is why streaks come back fast on a roof somebody already charged you to clean. We treat the whole roof.
Landscaping is protected before we go up
Everything that comes off a roof lands on whatever is below it. Planting beds along the drip line are pre-soaked with fresh water first, so the soil is already full and cannot take anything else up. Sensitive plants get shielded, and we work out where the runoff goes before the first gallon falls. Beds get a final fresh-water rinse when the job is done.
The same local family crew, licensed and insured
Valley Wash Pros is family owned and operated out of Fresno, licensed and insured, open 24/7, and rated 4.9 stars across 644 Google reviews. The people who quote your roof are the people who stand on it, which is exactly how careful roof work should be staffed.
What Are Those Black Streaks?
They are a living algae called Gloeocapsa magma, not dirt and not shingle wear. Airborne spores land on the roof, feed on the surface, and the colony spreads downslope with gravity and rainfall, which is exactly why the streaks always run vertically and always start high.
There is a tell that proves it is algae rather than dirt, and you can check it from the driveway. Look at the roof directly below any galvanized flashing, a metal chimney cap or a swamp cooler. That strip will be clean while everything to either side of it is streaked, because trace zinc and copper washing off the metal kills algae before it can establish. Clean bands under the metal, dark streaks between them, is the signature of a living organism, not of dust.
The Central Valley gives that algae everything it wants. Dense winter tule fog loads shaded slopes with moisture and keeps them damp for days at a stretch, then long 100 degree summers turn the same roof into a warm incubator. North-facing slopes stay damp longest, which is why they always look worst. Once algae establishes, moss and lichen follow, and lichen is the one that does real damage: it anchors into the surface of tile and down between shingle granules, so when it dries and tears free it takes roof material with it.
Don't Put Off Washing Your Roof
Waiting costs money in two directions. First, growth left in place keeps degrading the material underneath it. Moisture is held against the surface around the clock, lichen stays anchored into granules and tile, and the working life of the most expensive surface on the house gets shorter. Replacing a roof early costs many times what cleaning it on schedule does.
Second, heavy growth simply costs more to remove than light growth. A roof with a light film of algae treats quickly. A roof with five years of established moss and lichen needs heavier application, longer dwell time and more passes. The job you are putting off is cheaper today than it will be next year.
The reason most people wait is not the money though. It is worry, and it is usually one of these two questions.
Will soft washing hurt my roof?
No. Soft washing is designed to keep water on top of the roof, running downslope the way the roof was built to shed it. High pressure is what forces water sideways and uphill, under the courses and past the laps, onto underlayment that has no way to dry. It is also what cracks tile and strips the mineral granules off asphalt shingle. Take the pressure out and the risk goes with it.
Will soft washing damage my plants?
No, because of what happens before we go up. Everything that comes off a roof lands on whatever is below it, so beds along the drip line are pre-soaked with fresh water first. Soil that is already full cannot take anything else up. Sensitive plants get shielded, runoff is planned before the first gallon falls, and every bed gets a fresh-water rinse when the job is finished.
One honest exception to all of this. If your roof is within a year or two of replacement, or a roofer has already told you it is failing, do not spend money cleaning it. Tell us that on the phone and we will say so. Cleaning a roof that is about to come off is money you will never see again.
Otherwise, if you can already see distinct streaks from the street, or any green fuzz on the north slope, the roof is telling you it is time. We clean roofs in Fresno, Clovis, Madera, Chowchilla, Visalia, Tulare and the surrounding Valley. Call or text (559) 975-8124. The estimate is free and there is no obligation.
100% Satisfaction Guarantee
Try Fresno's Best Roof Cleaning Risk-Free Today.
Roof work is trust work, so we do not call a roof finished until you have seen the result and you are happy with it. Licensed, insured, family owned and open 24/7. If something is not right, we make it right before the truck leaves.
What Your Neighbors Are Saying About Our Roof Cleaning Services
Valley Wash Pros holds 4.9 stars across 644 Google reviews. Every word below was written by a real customer on our Google Business Profile, and we have not edited a syllable.
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Great service! We had a serious bird problem under our solar panels. Danny and Adrian cleared them out, washed the whole roof with antibacterial rinse and installed critter guard. So far, it's working like a charm! Thank you!
PPam ChavezRoof Wash & Bird Proofing
“
Valley Wash Pros are very professional. They accommodated me to schedule an appointment to pressure wash my backyard, front yard, driveway, and garage. They did a great job, and were very pleasant to work with. I highly recommend them.
MMohamed MarzoukPressure Washing
“
5 stars!! Helped us with pigeon issues on our solar and they were super professional, accommodating and courteous!!! Excellent experience, would highly recommend!!!
We are a Fresno company cleaning Fresno roofs: the concrete tile that covers most of Woodward Park, Fig Garden, Bullard and the northwest corridor, and the composition shingle on the older established streets, then out across the rest of the Valley from the same shop.
Roof Cleaning In Fresno CA
Roof cleaning in Fresno CA is our home market, and the crew covers five counties from here. Pick your city for the local detail.
Roof cleaning Fresno CA homes means dealing with a climate almost purpose-built for roof algae. Winter tule fog keeps shaded and north-facing slopes damp for days at a time, then the long hot summers turn that same moisture into an incubator, so growth establishes steadily instead of seasonally. Concrete tile dominates the newer developments in Clovis and northwest Fresno, and tile is exactly the material that punishes a crew who blasts instead of soft washing. The older neighborhoods run more toward composition shingle, where high pressure strips the protective granules that make a shingle a shingle. Foothill properties toward Oakhurst carry the heaviest moss and lichen thanks to elevation, tree cover and cooler damp air. Ag-town roofs in Kerman, Selma, Kingsburg and Reedley collect farm dust that feeds growth the moment the fog arrives. We quote every roof on what it actually carries, and the estimate is free anywhere in Fresno, Madera, Kings, Tulare or Merced County.
Bundle & Save
Services That Pair With Roof Cleaning
Book two or more services on one visit and the crew handles the whole property in a single trip, which is also the cheapest way to buy exterior cleaning.
Because the growth on a roof is alive and it damages the material it lives on. Black streaking is an algae called Gloeocapsa magma, and once it establishes, moss and lichen follow. Lichen is the one that does real harm: it anchors into the face of tile and down between shingle granules, so when it dries and tears free it takes roof material with it. Moss pads also hold water on the roof and dam the valleys instead of letting it run off. Cleaning is the cheapest way to protect the most expensive surface you own.
Some California homeowners have been asked by their carrier to clean the roof as a condition of renewal, usually where moss and packed debris are treated as a fire concern. It is not a statewide rule and we will not tell you it is. If you have a letter from your insurer, send us a photo of it and we will quote to exactly what it asks for, and give you photos of the finished roof to send back.
Not the way we do it. We never put high pressure on a roof. High pressure cracks concrete and clay tile, strips the protective granules off asphalt shingle, drives water under the courses and can put a roofing warranty at risk. We apply the solution at low pressure and give it dwell time, and on tile we use walk pads and plan foot placement so no single tile takes a point load. A tile is only supported where it laps the course below it, so we walk the lower third and step across the battens.
Every one to three years suits most Central Valley roofs, and the roof itself is a better guide than the calendar. Dense winter tule fog keeps shaded slopes damp for days at a stretch, then long 100 degree summers turn that moisture into an incubator, so growth establishes steadily here. When you can see distinct dark streaking from the street, or any green fuzz or crusty lichen on the north slope, it is time. Foothill homes with tree cover generally need it sooner than open Valley-floor roofs.
It removes a common cause of them. Moss pads and packed needles and leaves hold water on the roof and dam it in the valleys, and standing water is how a sound roof starts leaking. Clearing that growth lets the roof shed water the way it was built to. To be straight with you, cleaning does not fix a roof that is already leaking through cracked tile, failed flashing or worn-out underlayment. That is a roofer's job and we will say so.
Concrete tile, clay tile, asphalt shingle, metal and flat roofing systems. The material changes the approach rather than the method: tile gets walk pads and planned foot placement because of how it is supported, shingle gets careful rinse direction so nothing lifts a course, and flat roofs get attention to where the water actually drains. Every one of them gets low pressure and dwell time.
We use biodegradable, phosphate-free solutions and we manage where every gallon goes. Landscaping below the roofline is pre-soaked with fresh water before anything is applied, so the soil is already full and cannot take anything else up. Sensitive plants get shielded and beds get a final fresh-water rinse. Keep pets and kids inside while we are actively working, and everything is fine once surfaces have dried.
Most residential roofs are a few hours of work, usually two to five depending on size, pitch, height, material and how heavy the growth is. Set expectations on the result rather than the clock though: on a roof carrying thick moss, the color keeps improving for weeks afterward as the dead growth releases and washes off with wind and rain. That is what killing it looks like, and it is the opposite of scraping it off in one afternoon.
Noticeably, because from the curb the roof is often the largest surface anyone sees. Streaking and moss read as neglect to buyers, appraisers and neighbors before anybody inspects a thing. It is one of the highest-impact exteriors jobs on a house, and it is worth doing before listing photos are shot rather than after.
We quote each roof individually rather than off a chart. Roof size is the biggest factor, followed by pitch and height, the material, how severe the growth is, and how much landscaping below the roofline needs protecting. A single-story shingle roof with light streaking and a steep two-story tile roof with years of moss are very different jobs. Send the address or a photo and we come back with an exact, free number, usually the same day.
Still have a question? Call or text (559) 975-8124 and talk straight to the crew that will do the work. We answer 24/7 and the estimate is always free.
Book Your Free Estimate
Get The Highest Quality Roof Cleaning in The Valley
Call or text (559) 975-8124, or send the form below. A member of the crew gets back to you fast with a free, exact estimate anywhere in Fresno or the Central Valley.
10% off any service · extra 5% off for seniors, veterans & essential workers · Open 24/7 · Licensed & insured
Before & After
See the difference.
Real Central Valley surfaces, real results. Swipe through recent Valley Wash Pros jobs, roofs, solar arrays and concrete brought back to life.
Tile RoofSpanish tile restored to clean
BeforeAfter
Composition RoofMoss and staining soft-washed away
BeforeAfter
Concrete DrivewayYears of grime and traffic film lifted
Solar PanelsValley dust cleared, output restored
BeforeAfter
Concrete Tile RoofLichen and black streaks removed
BeforeAfter
Flagstone PatioNatural stone color brought back
Commercial ConcreteSidewalk pressure washed
BeforeAfter
Tile RoofSoft-wash safe on every tile
Drag the divider to compare · swipe or use the arrows for more
Pressure & Power Washing Experts
At Valley Wash Pros, we do careful, thorough pressure washing for both residential and commercial properties.
Our pressure washing team is committed to restoring the beauty of your home with advanced equipment and effective cleaning techniques. Whether it's a driveway, deck, siding, or roof, our high-pressure washing solutions remove dirt, grime, stains, and mildew, ensuring your property looks fresh and well-maintained.
We take pride in our attention to detail, quality service, and customer satisfaction, making us the trusted choice for all your pressure washing needs. With years of experience and a passion for excellence, we guarantee a job done right every time. Choose Valley Wash Pros for your pressure washing needs.
Why Trust Valley Wash Pros?
Free On-Site Consultations
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Commercial Grade Equipment
Service and Product Warranty
Licensed & Fully Insured Services
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Splash And Dash Poor Quality Services
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Working with us is easy as 1-2-3.
Tell us what you need anywhere in Fresno or the Central Valley. We handle the rest.
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Call, text or fill out the form. You'll get an honest, same-day estimate with zero pressure.
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Our crew arrives on time with the right equipment and method for every surface on your property.
Sit Back and Enjoy
Walk the job before we leave. Not satisfied? We make it right. Satisfaction guaranteed, every time.
Dirty property? No time? Let Valley Wash Pros handle it.
Valley Wash Pros is a Fresno-based, family-run crew serving homes
and businesses across Fresno & the Central Valley. We do one thing and we do it
right , strip away years of Valley dust, hard-water stains and grime and leave your
property looking brand new. No streaks, no shortcuts, no excuses.
Roof & gutter cleaning, solar panel cleaning, bird proofing, house & pressure
washing, windows and concrete , we bring the right method and the right pressure to
every surface. Fully licensed & insured, satisfaction guaranteed on every job. You
point at the mess. We make it disappear.
Based in Fresno, Valley Wash Pros serves homes and businesses across Fresno, Madera, Kings, Tulare and Merced counties, from Clovis to Visalia to Merced. Find your city below.
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