Soft-Wash Roof Cleaning in Dallas–Fort Worth

Why your roof has black streaks (and why they keep coming back)

If you've looked up at your roof lately and noticed dark stains or streaks running down the north- and shade-facing slopes, that isn't dirt, soot, or a worn-out shingle. It's a living organism called Gloeocapsa magma — a blue-green algae that feeds on the limestone filler baked into modern asphalt shingles. North Texas is a near-perfect home for it: long humid stretches, heavy summer heat, oak and pecan canopy dropping shade and organic debris, and that sticky spring pollen that gives the algae something to cling to.

Here's the part most homeowners get wrong. You can rent a pressure washer, climb up, and blast the streaks off — and for about a week your roof will look great. But you've done two bad things at once. First, high pressure tears the protective granules off your shingles, taking years of life off the roof and often voiding the manufacturer's warranty. Second, blasting only removes what you can see. The algae's roots stay embedded in the shingle, and within a season or two the streaks march right back down.

The fix is a soft wash. Low pressure — think garden-hose gentle — paired with professional cleaning solutions that actually kill the algae, moss, and mildew at the root. That's the difference between a stain that returns next summer and a roof that stays clean for years.

Soft washing is the only method we'll use on a roof

At Summit Surface Solutions we match the method to the surface, every time. For hard flatwork like concrete driveways and pavers, high-pressure surface cleaning is the right call. A roof is the opposite. It's a delicate, layered, warranty-backed system, and the only correct approach is soft washing.

• Low pressure rinses the surface without disturbing granules, flashing, or seals.
• Cleaning solutions break down and kill the algae, lichen, and moss at the root — not just the visible film.
• A gentle rinse carries the dead growth away, and the roof keeps clearing for days afterward as the solution finishes its work.

Because we never point high pressure at your shingles, our process stays inside what shingle manufacturers and the roof-cleaning trade association (ARMA) actually recommend. That protects your warranty and your investment.

Roof surface	Right method	Wrong method
Asphalt / architectural shingle	Soft wash, low pressure	High pressure (strips granules, voids warranty)
Concrete or clay tile	Soft wash, careful footing	Walking heavy / pressure (cracks tiles)
Metal / standing-seam	Soft wash, streak-safe rinse	Abrasive scrubbing (scratches finish)

Roofs we clean across DFW

We soft wash every common roof type in the metroplex:

• Asphalt and architectural shingle — the most common by far in Plano, Frisco, McKinney, Allen, and Carrollton. Algae streaks show up worst here, and results are dramatic.
• Concrete and clay tile — popular on Mediterranean- and Spanish-style homes. We treat these with extra care for footing and fragile tile edges.
• Metal and standing-seam — increasingly common on modern and farmhouse builds around Fort Worth and the outer suburbs. Soft washing lifts organic staining without scratching the coating.

We also handle moss and lichen on heavily shaded roofs — the ones tucked under a mature oak canopy in older Dallas and Richardson neighborhoods — where regular shade keeps things damp.

Why it matters here in North Texas

A stained roof isn't just cosmetic. That algae mat holds moisture against your shingles and, over time, works under the granule layer — the exact thing that's supposed to reflect our brutal DFW summer sun. A dirty roof runs hotter and ages faster.

There's a curb-appeal and money angle too:

• Roof life. Keeping algae and moss in check helps your shingles reach their rated lifespan instead of failing early. Replacing a roof is a five-figure job; a soft wash is a small fraction of that.
• Energy. A clean, reflective roof doesn't trap as much heat, which your attic and AC will appreciate come July.
• Curb appeal and HOA rules. In master-planned communities across Frisco, McKinney, and Prosper, streaked roofs are one of the most common HOA complaint letters we hear about. A soft wash gets you back in good standing — and makes a real difference if you're listing your home.

What to expect when we clean your roof

1. Free on-site quote. We look at your roof pitch, material, tree cover, and how much growth is present, then give you a firm number — no surprises.
2. Protect the property. We pre-wet and protect landscaping, since our solutions are tough on algae but we don't want them on your prized crepe myrtles or St. Augustine turf.
3. Apply and dwell. We apply the soft-wash solution at low pressure and let it work. On heavy growth, you'll see it start lifting almost immediately.
4. Gentle rinse. We rinse to a clean, even finish. Some staining continues to fade over the following days as the treatment finishes killing the growth at the root.
5. Walk the results. We're owner-operated, so the person who quoted the job is on-site making sure you're happy before we pack up.

Most single-family roofs are a half-day job, and you don't need to be home — though we're happy to have you there.

Great add-on: gutter brightening

While we're already set up on your roofline, it's the perfect time to knock out those ugly black vertical stains on the face of your gutters — the ones the trade calls tiger stripes. They're baked-on oxidation and grime that regular rinsing won't touch, and they make even a freshly cleaned roof look tired. Bundling gutter brightening with your roof clean saves a trip charge and finishes the whole roofline in one visit.

Pricing and what affects it

Every roof is different, so we don't post a one-size-fits-all price. Instead, we come out and give you a clear, firm number with a free, no-obligation on-site quote — you can also send photos to get us started. Either way, the price we quote is the price you pay: no surprises, no upsells on the day.

What moves the price:

• Size and pitch — a bigger footprint and a steeper roof take more time, materials, and safety setup.
• How much growth — a lightly spotted roof is a smaller job than one that's fully blackened with moss and lichen.
• Roof material — tile and metal need more careful handling than standard shingle.
• Height and access — tall multi-story rooflines, tight lots, mature trees, and delicate landscaping all factor in.
• Add-ons — bundling extras like gutter brightening (or a protective treatment) affects the total, though bundling usually saves versus separate trips.
• One-time vs. recurring — homes on a regular maintenance schedule are typically easier to keep clean than a roof we're treating for the first time after years of buildup.

Because we walk the property before quoting, the number you get reflects your actual roof — and there's never any obligation to book.

Why homeowners choose Summit

• Ten-plus years cleaning exteriors across DFW — this is what we do all day.
• Owner-operated. You deal directly with the person doing the work, not a rotating crew.
• Fully insured for your peace of mind.
• Warranty-safe method. We soft wash roofs, period — no shortcuts that damage your shingles.
• We serve the whole metroplex: Plano, Frisco, McKinney, Allen, Dallas, Fort Worth, Richardson, Carrollton, Prosper, and the surrounding communities.

Ready to get those streaks gone for good? Call or text (512) 659-7674 or request your free quote today.