If you live in Apex or Cary and you have noticed dark, sooty-looking streaks running down your roof, you are not imagining things and it is not just dirt. Those streaks are a cyanobacteria called Gloeocapsa magma, and in our warm, humid North Carolina summers it spreads fast. Left alone it feeds on the limestone filler in asphalt shingles, breaking them down from the inside out. We see it constantly on homes in Apex neighborhoods like Haddon Hall, Bella Casa, and the established streets off Salem Street in 27502, and just as often on roofs in Cary subdivisions like Lochmere, Weatherstone, and MacGregor Downs in 27511 and 27513.
Green algae and moss show up right alongside those black streaks, especially on north-facing slopes and anywhere tree canopy holds moisture against the shingles after a rain. Wake County gets enough humidity from May straight through October that a roof cleaned this spring can show regrowth before Thanksgiving if it is not treated with the right chemistry. That is why Green Eagle uses a low-pressure soft wash process with a professional-strength sodium hypochlorite blend rather than a high-pressure washer. High pressure tears off granules, voids most manufacturer warranties, and just moves the biology around instead of killing it at the root.
Why Apex and Cary Roofs Are Especially Vulnerable
Both Apex and Cary sit in areas with dense mature tree canopy. That is one of the things that makes neighborhoods like 12 Oaks in Holly Springs right on the Apex line, or the older sections of Lochmere in 27518 so appealing to buyers. The shade also means roofs stay damp longer after rain and morning dew, which is exactly the condition Gloeocapsa magma and green algae need to colonize. Add in the red clay soil that splashes up onto lower roof sections during heavy summer downpours and you have a recipe for stubborn staining that plain rain will never rinse away.

How Green Eagle Soft Washes a Roof in Apex and Cary
We pull up to your home and the first thing we do is protect what is around it. Landscaping beds get a thorough pre-rinse and we cover plants closest to the downspout drop zones. Our mix is applied from the ground or a ladder at very low pressure, no more than what a garden hose puts out at the nozzle, so there is zero granule loss. The surfactant in the blend lets the solution dwell and penetrate, breaking down the algae, bacteria, and moss at the cellular level rather than just bleaching the surface stain. We then rinse with low-pressure water and the debris comes off clean.
Most Apex and Cary homeowners are surprised by how complete the result is on the first pass. Shingles come back to their original color, the streaks are gone, and the treatment leaves a residual that slows regrowth considerably. We typically tell homeowners in 27502 and 27511 that a well-maintained asphalt roof cleaned on a regular cycle every two to three years will look sharper and last years longer than one that never gets touched.
Call (919) 951-9225 or submit a quick form online. We cover all of Apex and Cary including 27502, 27511, 27513, and 27518.
Get a Free Estimate(919) 951-9225HOA Requirements and Pre-Sale Curb Appeal in Cary and Apex
Cary is one of the most HOA-dense communities in Wake County. Neighborhoods like Preston, Weston, and MacGregor Commons have active architectural review boards that issue violation notices for visible algae and black streaks on roofs. We have worked with homeowners in all of these areas and we understand the documentation some HOAs ask for. We can provide before-and-after photos and a service summary letter if your association requires proof of professional treatment.
On the real estate side, a clean roof makes an enormous difference on listing photos and during the walk-through. Buyers and their agents in the Apex and Cary market have seen enough roof replacements to be cautious the moment they spot black streaking. A fresh soft wash removes that concern from the equation entirely and costs a fraction of what even a partial roof repair would run. If you are getting ready to list a home in Bella Casa, Haddon Hall, or any of the neighborhoods along US 64 in Apex, a roof cleaning belongs on your pre-listing checklist.

What We Look for Beyond the Streaks
While we are on the roof soft wash job we always do a visual walk of the exterior. We are not home inspectors and we are not going to overstate anything, but we will let you know if we see obvious issues worth flagging: a valley that is holding debris, a gutter section that has pulled away from the fascia, or heavy moss buildup at a ridge that might warrant a follow-up look by a roofer. Homeowners in the Apex and Cary market appreciate having that extra set of eyes, especially on homes in the 15 to 25 year age range that are common throughout 27502 and 27513.
Signs Your Apex or Cary Roof Needs Soft Washing Now
- Black or dark gray streaks running vertically down any slope, most common on north and west faces
- Green or yellow-green algae patches, especially near the eaves or in valleys
- Fuzzy moss growth on ridge caps or anywhere with consistent shade
- An HOA notice or letter from your architectural review board about roof appearance
- Listing photos or buyer feedback that calls out roof staining
- Shingles that look faded and uneven in color even after a rain
Neighborhoods and Zip Codes We Serve Regularly in Apex and Cary
- Apex 27502: Haddon Hall, Bella Casa, Kelly Park, Salem Village, Friendship Station, downtown Apex historic district
- Apex 27539: Flowers Crossroads area, south Apex near the Fuquay line, New Hill Road corridor
- Cary 27511: MacGregor Downs, Lochmere, Cary Park, older subdivisions near Cary Towne Boulevard
- Cary 27513: Preston, Weston, Cary's northern sections near I-540
- Cary 27518: Lochmere south, Carpenter Village, Regency, neighborhoods near Koka Booth Amphitheatre
Green Eagle Pressure Washing is locally owned and operated out of Wake County. We are not a franchise and we do not subcontract the work out to whoever has a rig available. When you book a roof soft wash in Apex or Cary you get the same experienced crew every time. We keep our schedule tight, we communicate before arrival, and we leave the property clean. Give us a call at (919) 951-9225 and we will get you a straightforward estimate, no pressure, no upsell.

Serving Apex 27502 and 27539, Cary 27511, 27513, and 27518. Fast scheduling, local crew, written estimate before we start.
Get a Free Estimate(919) 951-9225Frequently Asked Questions
Will soft washing my roof damage the shingles or void my warranty?
No, as long as the process uses low pressure, which is what Green Eagle does. The Asphalt Roofing Manufacturers Association actually recommends low-pressure chemical cleaning over high-pressure washing. High pressure tears off the granules that protect your shingles. Our soft wash applies solution at no more than garden-hose pressure and lets the chemistry do the work.
How long does roof soft washing take on a typical Apex or Cary home?
Most single-family homes in Apex and Cary take between one and two hours for the roof portion. Larger homes in neighborhoods like Preston or MacGregor Downs with steeper pitches or extensive ridge lines can run a bit longer. We give you a time estimate when we quote the job so you know what to expect.
Will the black streaks come back after a soft wash?
The bacteria and algae that caused the streaks are killed, not just bleached. Regrowth depends on how much shade your roof gets and how humid the summers are, and both are significant factors in Apex and Cary. Most homeowners see clean results for two to three years. Scheduling a cleaning on a regular cycle is the most cost-effective way to stay ahead of it.
Do I need to be home when Green Eagle cleans my roof?
Not necessarily. We need access to an outdoor water spigot and we need to know your landscaping is visible so we can protect it. Many Cary and Apex homeowners leave the gate unlocked and let us work while they are at the office. We send a completion text with photos when we finish.
Can you clean the roof and the house siding at the same visit?
Yes, and many homeowners in Apex and Cary combine the roof soft wash with a full house wash or driveway cleaning on the same appointment. Bundling services saves a mobilization charge and gets everything done in one morning. Just mention what you need when you call (919) 951-9225 and we will price the whole scope together.
My Cary HOA sent me a notice about my roof. Can Green Eagle document the cleaning for them?
Absolutely. We take dated before-and-after photos on every job and can provide a simple service summary letter for your HOA file. We have dealt with architectural review boards throughout Cary, including in Weston and Preston, and we know how to give you the documentation that satisfies the notice.
