Looking up and seeing your roof covered in dark streaks, thick moss, or green algae is more than just an eyesore. Those stains are actually living organisms feeding on your roof materials, shortening its lifespan and lowering your home's curb appeal. It makes the whole property look tired and older than it is. We understand the frustration of seeing a beautiful home dragged down by a dirty roof, and we know exactly how to safely lift those stains away.
Those black streaks you see aren't just dirt; they are a type of algae that actually eats the limestone filler in asphalt shingles. Moss and lichen are even worse, as they act like tiny sponges that trap moisture against your roof surface long after it rains.
Over time, these roots grow under your tiles, lifting them up and creating gaps where water can seep into your attic. Leaving growth on your roof severely accelerates its deterioration, turning a simple cleaning job into a massive roof replacement bill.
Eats limestone filler in shingles.
Moss sponges trap water.
Lifts tiles and creates gaps.
Leads to total replacement.
At Matty Window Cleaning, we only use the soft-wash method on roofs. We never bring a high-pressure washer up there, because blasting tiles or shingles will strip the protective granules and void your manufacturer's warranty.
Instead, we gently apply eco-friendly cleaning solutions that kill the root systems of the moss and algae. The dead growth safely detaches, leaving your roof completely clean without suffering any structural damage.
We take care of your property at every step. Here is how we ensure a perfect clean without the stress.
First, we inspect the roof for loose shingles or broken tiles so we know what areas to avoid or flag for repair.
We carefully bag the ends of your downspouts and soak all surrounding gardens to protect your plants.
We apply our specialized soft-wash solution using a low-pressure spray to saturate the moss and algae.
We let the solution dwell, killing the organic growth right down to the root spores for long-lasting results.
Finally, we gently rinse the roof down and clean up any loose debris around the perimeter of your house.
When we pack up and drive away, you're left with a spotless roof and a clean yard.
Every climate brings unique challenges to your roof. We know how to handle them all.
California roofs take a beating from all angles. Coastal moisture brings stubborn algae, while northern regions struggle with heavy moss buildup in the wetter months. In the dry seasons, it's a constant battle against dust, debris, and sticky wildfire ash residue settling into the roof valleys. We service homes across Los Angeles, San Diego, Sacramento, San Jose, and Fresno to clear away the grit safely.
Damp New York winters are the perfect environment for moss and lichen to thrive, especially on shaded sides of a property. Those ugly black algae streaks also show up quickly on light-coloured shingles. We handle the heavy debris dragged down by winter snowfall, helping prevent severe damage during the spring melt. Our teams work throughout New York City, Buffalo, Albany, Rochester, and Long Island.
Texas heat bakes dirt straight onto roof tiles. In the humid eastern parts of the state, we constantly battle green and black algae, while west Texas deals with massive dust accumulation. We also find ourselves doing a lot of cleanup work to remove debris scattered across roofs after hailstorms. You'll see our vans working in Houston, Dallas, Austin, San Antonio, and Fort Worth.
Florida's intense humidity means heavy algae and mould growth are a constant issue for homeowners. If you're near the coast, salt deposits also cake onto your tiles, wearing them down faster. We are busy year-round tackling the grime, performing post-storm inspections, and clearing off hurricane debris. We cover Miami, Tampa, Orlando, Jacksonville, and Fort Lauderdale.
Complete care from the ground up. No shortcuts, just results.
Biodegradable solution kills root systems.
Thorough watering of your gardens before & after.
Bye-bye algae streaks, moss, and lichen.
Blowing off loose leaves, sticks, and grit.
Low-pressure lift of all dead root spores.
We clear any debris that washed down onto paths.
We clean both traditional shingle roofs and delicate Spanish tile setups for residential homes. A clean roof immediately brings back your home's curb appeal and protects one of your biggest investments from long-term rot.
Get a Home QuoteWe manage large flat commercial roofs and multi-building properties for businesses and HOAs. Routine cleaning keeps drainage systems clear and prevents pooling water from damaging structural integrity.
Request Commercial ProposalFor most homes, a thorough roof cleaning every three to five years is perfect. However, if you live in heavily wooded areas or the highly humid parts of Florida, you might need us to come by every year or two.
We assess your local environment and give you a straightforward recommendation. We'll never push you into a yearly schedule if your roof is still in great shape.
Using a high-pressure washer on a roof is a quick way to ruin it. High pressure blows the protective sand granules right off asphalt shingles and forces water under the underlayment, leading to indoor leaks. It can easily crack older terracotta or slate tiles. That's why soft washing is the industry-recommended method. It relies on the cleaning solution doing the heavy lifting to kill the organic growth, requiring only a gentle rinse that keeps your roof entirely safe.
We calculate our pricing based on a few factors: the overall size of the roof, how steep the pitch is, and the current condition of the buildup. A lightly stained, single-story ranch is easier and cheaper to clean than a steep three-story home covered in moss.
We are always transparent with our pricing. You will receive a clear, upfront quote before we ever touch your roof. You won't have to deal with surprise fees added on the day of the job.
"Our roof had these awful black streaks that made the whole house look dingy. The crew explained the soft wash process clearly, and within a few hours, the streaks were totally gone. Very professional guys."
- Kevin B., Buffalo
"We had a ton of debris and dust stuck on our tiles after a dry summer in Texas. They didn't use harsh pressure washing, which I appreciated. The roof looks fantastic and they left the driveway perfectly clean."
- Jason H., Austin
"The mould was taking over our tile roof thanks to the Florida humidity. Matty's team came out, sprayed their solution, and it completely lifted the green grime. The house looks incredibly fresh again."
- Rachel C., Tampa
Don't let moss and algae ruin your roof and drag down your property's value. Get a hassle-free, upfront quote today.
