01RoofWhat You Get When We Clean a Roof
A soft wash kills the algae, moss and lichen on your roof, then a gentle rinse carries it off. High pressure can strip the granules that shield asphalt shingles from the sun, so we leave the pressure washer on the truck. The mix needs about 15 to 20 minutes to work, and the streaks keep fading after the next rain.
This specialist service is available through our broader pressure washing in Wilmington.
This page is for homeowners, landlords and sellers who want the roof to match the rest of the house. Call or send a photo from the street and we will tell you what the job looks like.
Every Part of the Roof Gets Attention
A full visit covers more than the flat slopes. Here is what goes into one.
- Every slopeThe north side first, since shade keeps it damp and green the longest.
- Ridge and valleysGrowth settles where water runs and lingers, so we rinse those lines clear.
- Gutters and downspoutsWe can flush the run off so it does not stain the siding below.
- Plants and lawn under the eavesSoaked before and after, and covered when needed.
- A photo reportStreet view photos from the same spot, before and after.
Why Roofs Go Dark So Fast Here
Wilmington gets about 60 inches of rain a year over roughly 122 rainy days, according to the National Weather Service. Average humidity sits near 74 percent. Fog rolls in on about half the days of the year, and big pines and live oaks keep many roofs in shade.
That mix feeds algae. The black streaks are Gloeocapsa magma, and it travels on the wind from roof to roof. A neighbor’s roof can seed yours.
Streaks also change how a house reads. Buyers and home inspectors often see a dark roof and assume it is worn out, even when the shingles have years left.
Black Streaks on Roof Removal in Five Steps
Every roof follows the same order. Nothing gets rushed, because the dwell time is what does the cleaning.
- Look firstWe check the roof from the ground and a ladder, and from your photos when the pitch is steep. Cracked or lifted shingles get noted before any water touches them.
- Soak the yardLawn, shrubs and flower beds below the roofline get a heavy wet down.
- Apply the mixA sodium hypochlorite and water mix goes on from the ground or the roof, depending on the pitch and the footing.
- Let it dwellThe mix sits for 15 to 20 minutes while it breaks down the growth.
- Rinse and photographA gentle rinse clears the roof, plants get rinsed again and we take photos from the street.
Roof Types We Clean and What We Pass On
Most roofs in the area fall into a few groups, and each one gets the same low pressure care with small changes in method.
| Roof Type | How We Treat It |
|---|---|
| Asphalt shingle | Soft wash mix, 15 to 20 minute dwell, gentle rinse |
| Architectural shingle | Same mix, extra care on thick ridge lines |
| Metal panels | Mild mix and a low pressure rinse |
| Clay and concrete tile | Soft wash with as little walking as possible |
| Flat porch roofs | Soft wash and a careful rinse around drains |
We pass on roofs that are badly damaged. If shingles are missing, curling or soft underfoot, a roofer should see the roof before anyone washes it. We will tell you plainly and take photos so you can show the roofer.
Roof Cleaning Cost Wilmington NC Owners Can Expect
Roof size, pitch, height and how heavy the growth is set the price. A quick look at photos gets you a range before anyone comes out, and the range is confirmed on site.
| Roof | Typical Range |
|---|---|
| Small ranch | $350 to $450 |
| Average two story | $450 to $650 |
| Steep or very large roof | $600 to $750+ |
Steep pitches, tall houses and thick moss cost more, because they take more time and more care. Pairing a roof with a house wash in one visit saves a trip.
Protecting Plants, Gutters and Shingles
Roof work is only as good as the care around it. These are the habits that keep the rest of your property safe.
- No high pressureThe rinse is gentle, so granules stay where they belong.
- Heavy wettingPlants and lawn get soaked before and after the wash.
- Downspouts aimed away from bedsRunoff goes to grass or pavement, not into your flower beds.
- No walking on wet roofsWe wait or work from a ladder when footing is slick.
What Is Growing on Your Roof
Not every green or black patch is the same thing. Knowing which one you have tells you what the job needs.
- Black streaksAlgae. They run in vertical lines from the ridge down.
- Green clumpsMoss. It holds water against the shingles and lifts their edges over time.
- Crusty gray or orange circlesLichen. It grips tight.
Lichen may need a second pass, and it fades over weeks, not minutes. If moss is thick, we pull it gently by hand before the mix goes on. For roof moss removal Wilmington homes with oak shade usually need a longer dwell and a patient rinse.
How Often Should You Clean Your Roof in NC
Most roofs here do well with a cleaning every 2 to 4 years. Shaded and north facing roofs may need it sooner, and roofs under pines pick up needles and pollen that keep them damp.
Zinc or copper strips near the ridge are an option after a cleaning. Rain washes a trace of metal down the roof and slows new algae. Ask about it when you book and we will tell you how it fits your roof.
Picking the Right Time of Year
Roofs can be washed in any season here because winters stay mild. Timing still helps.
- Late springPine pollen peaks from late March to early April. Once it drops, a wash leaves the roof clean for the summer heat.
- Early fallHurricane season runs from June to November, and a wash in the quieter weeks gets leaves, needles and old growth off before winter rains.
- After a big stormWind drops limbs and debris on the shingles. We clear the stain and tell you if a roofer should look at damage.
Spring pollen season books up first, so earlier calls get easier dates.
What Happens Up on the Roof
Safety matters on a pitched roof. We use ladders set on firm ground and keep footing dry and slow. On steep roofs we apply the mix from the ground when we can, and we will not climb onto a wet slope for the sake of a faster finish.
Tell us about satellite dishes, solar panels, skylights and loose flashing when you call. Those spots get extra care, and we mark them in the photo report.
Other Work Crews Pair With a Roof
A roof wash pairs well with a few other jobs on the same trip:
- Gutter brighteningRoof runoff leaves tiger stripes on gutter faces.
- House washingAlgae on siding grows from the same damp air.
- Pre listing cleanupA bright roof photographs better before a sale.
Where Our Roof Crew Works Around Town
Roof Cleaning is available throughout Wilmington and nearby communities. If you live in or around Wilmington, we are close. We cover ZIP 28411 for Porters Neck and Ogden, plus Landfall and the other neighborhoods around town.
- LelandNewer builds in the Brunswick County side get fast green growth in shaded yards, so roof cleaning Leland NC owners often book after a first summer.
- HampsteadDamp air near the Intracoastal Waterway keeps roofs dark, and roof cleaning Hampstead NC calls come in often after wet springs.
- Porters Neck and LandfallBig oaks and pines shade many roofs here.
- The beach townsSalt air and storms leave a film on top of the algae.
Roof cleaning 28411 is a common request from Porters Neck homes that sit under tall trees.
Roof Questions People Ask Us
Can you pressure wash a roof?
Not an asphalt shingle roof. The Asphalt Roofing Manufacturers Association (ARMA) says high pressure is likely to damage it. It suggests a bleach and water solution left 15 to 20 minutes, then a gentle rinse. That is the method we use.
What are the black streaks on my roof?
They are a type of algae called Gloeocapsa magma. It spreads by wind and thrives on damp, shaded roofs, which is why it shows up so often around Wilmington. The soft wash kills it at the root.
How long does a roof cleaning last?
Most roofs stay clean for two to four years. Shaded roofs and roofs under pines may need it sooner. Zinc or copper strips near the ridge can slow regrowth.
Is roof cleaning worth it?
For a roof in good shape that is only stained, yes. It costs a small share of a new roof, lifts curb appeal for buyers and inspectors, and removes growth that holds moisture against the shingles.
Choosing a Roof Crew and Booking One
When comparing roof cleaning providers, focus on surface-safe methods, clear pricing and documented results. Ask any crew how they clean, what they charge and whether they carry insurance. A roof cleaning company Wilmington NC homeowners can trust answers all three before they climb a ladder.
Our answers are a soft wash roof cleaning method, a price range up front and an insured crew. Roof washing Wilmington NC owners ask about is also the same job, just a different name for it.
Wilmington Service Area Map
Book Roof Cleaning Wilmington NC This Season
Describe the roof, get a range, and let the crew look it over before any water flows. Call (910) 421-8606 or send a photo from the street.
We will tell you what we see on the roof, what we would clean and what we would leave to a roofer. Share any gate codes, pets or tight access when you book so the crew shows up ready.
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