In Simpsonville, the roofs that streak first are often the shaded ones behind two-story houses in Five Forks, Neely Farm, Heritage Lakes, and Kilgore Farms. Homeowners sometimes hear about the streaks from an HOA before they notice them from the driveway. The stain is usually Gloeocapsa magma, an algae that thrives in Greenville County's warm, wet summers. Pine pollen in late March and April adds a yellow layer that rain works into the granule surface.
Soft wash the roof. Pressure washing asphalt shingles strips granules. That is the ARMA and GAF warning, and it applies to a new architectural roof in Heritage Lakes the same as an older three-tab. Check your covenants if a notice arrived, and tell the pro about the deadline. The page cannot quote your HOA's cure period.
National ranges are $450–$700 for a typical roof cleaning, or about $0.30–$0.75 per square foot. A 1,700 square foot roof often lands around $510–$1,275 in those guides. That is a national cost-guide range; local quotes vary. Simpsonville listings rank up to three Top Spots, then Featured, then everyone else. The $40 deposit is credited to the job. Greenville County storm-drain rules are worth a question before the rinse starts.
What roof soft washing costs in Simpsonville
We have not found reliable Simpsonville-specific price data, so these are national ranges. A quote in Greenville County still depends on the property. These figures are a national cost-guide range; local quotes vary.
| Roof | National typical range |
|---|---|
| Typical roof cleaning | $450–$700 |
| Soft wash | $0.30–$0.75 per sq ft |
| About a 1,700 sq ft roof | $510–$1,275 |
These figures are a national cost-guide range; local quotes vary.
Source: Angi, “How Much Does It Cost to Pressure Wash a House?” (updated Oct 2026); Today's Homeowner, roof cleaning cost.
Soft wash vs. pressure wash
Asphalt shingles in Simpsonville should be soft washed, not pressure washed. Black streaks around Five Forks are usually Gloeocapsa magma. The Asphalt Roofing Manufacturers Association says to keep a pressure washer off shingles, and GAF says power washing can dislodge granules. Use a gentle bleach-and-water mix, let it dwell, and rinse at low pressure. Simpsonville is in Greenville County, where wash water that reaches a storm drain and is not entirely stormwater can count as an illicit discharge.
How booking works
- Pick a Simpsonville pro from the listings on this page. Up to three Top Spots lead, then Featured profiles, then the rest. Featured and Top Spot are paid placement, and the badges say so.
- Choose a time and pay the $40 deposit. It is credited to your job, not an extra fee. If the pro declines, the deposit is refunded.
- The pro confirms, does the work, and you pay them the balance.
Spring weeks fill first. For a late April or May visit in Simpsonville, booking in February or March leaves more open times.
Nearby
- roof soft washing nearby: roof soft washing in Mauldin, Greenville roof soft washing pros
- Also in Simpsonville: house washing in Simpsonville · driveway cleaning in Simpsonville · deck and fence cleaning in Simpsonville · gutter brightening in Simpsonville
- All exterior cleaning in Simpsonville · Roof Soft Washing across the Upstate
FAQ
How much does roof soft washing cost in Simpsonville, SC?
National guides put a typical roof cleaning at $450–$700. Soft washing often runs about $0.30–$0.75 per square foot, or roughly $510–$1,275 for a 1,700 square foot roof. Pitch and shade around Five Forks and Neely Farm change the Simpsonville quote. That is a national cost-guide range; local quotes vary.
What are the black streaks on roofs in Simpsonville?
They are usually Gloeocapsa magma, an algae that thrives in warm, humid weather. Shaded slopes near Five Forks and Neely Farm in Greenville County streak the darkest. Pine pollen from late March through April adds another film. It is not dirt a garden hose will remove.
Can I pressure wash a roof in Simpsonville?
No. The Asphalt Roofing Manufacturers Association says not to use a pressure washer on asphalt shingles, and GAF says power washing can dislodge granules. A Simpsonville roof should be soft washed: a gentle solution, dwell time, and a low-pressure rinse.
When should I book roof cleaning in Simpsonville?
After the heaviest pine pollen, late April into May, is a common time in Simpsonville, because pollen and humidity both feed growth on Greenville County roofs. Spring appointments book up, so earlier reservations leave more choices.
Will a roof soft wash in Simpsonville harm plants or storm drains?
The solution can burn plants if it is not controlled. Ask how plantings are wetted and rinsed. Simpsonville is in Greenville County, where wash water that reaches a storm drain and is not entirely stormwater can count as an illicit discharge.
Is the $40 deposit an extra charge in Simpsonville?
No. The $40 deposit is credited to the roof soft washing job in Simpsonville, and you pay the pro the remaining balance. If the pro declines the booking, the deposit is refunded.