Soft washing matched to what is actually on your roof — shingle, tile, or a moss-covered roof under oak canopy.
Soft washing applies a cleaning solution at low, garden-hose- level pressure that kills algae, mold and lichen at the root, then rinses it away. It is the method behind every service on this page — the difference between the services below is the roof surface and the problem, not the underlying technique.
| Question | Soft washing | Pressure washing |
|---|---|---|
| Water pressure used | Low, roughly garden-hose level | High — 1,000+ PSI is typical |
| What actually removes the algae | A cleaning solution that kills Gloeocapsa magma at the root | Physical force alone |
| Shingle granule loss risk | Minimal — no direct high-force impact | Real risk of stripping the protective granules |
| Safe on clay or concrete tile | Yes, when applied correctly | Cracked and dislodged tile is a documented risk |
| Typical result duration | Longer — the treatment kills the algae, not just the visible stain | Shorter — surface staining returns faster once regrowth restarts |
Asphalt shingle is Sanford's most common roofing, from the century-old wood-frame homes downtown to the post-2000 subdivisions on the city's edges. Black streaking (Gloeocapsa magma algae) is the problem soft washing was built to solve on shingle — see our black streaks guide for what's actually growing on the roof and why.
Clay and concrete tile show up across Sanford's newer Centex- built communities such as Sylvan Lake Reserve. Tile cracks under foot traffic and under a pressure washer far more easily than shingle does, which is the whole argument for soft washing it instead: the chemical treatment does the cleaning, not the roof crew's body weight or a high-pressure wand.
Moss needs shade, moisture and debris to take hold, and Sanford's live-oak-canopy neighborhoods — the downtown historic core, Dreamworld, Middleton Oaks and the Mayfair area among them — supply all three. Soft washing kills moss at the root rather than scraping it, which avoids lifting shingle granules along with the moss itself.
Gutter faces streak with oxidation and the same black algae that stains a roofline, usually added as part of a full exterior soft wash visit rather than booked alone. [NEED: confirm whether this is offered as a standalone service or only bundled with a roof cleaning visit].
Statewide estimates put roof cleaning at roughly $0.15–$0.75 per square foot depending on method, with soft washing typically quoted around $0.30–$0.50 per square foot and pressure washing (not recommended for shingles) around $0.20–$0.75 per square foot. These are researched market estimates from third-party Florida pricing guides, not this company's quoted prices, and actual cost depends on roof size, pitch and soiling level. [NEED: publish real quoted price ranges once jobs have been priced locally].
One Orlando-area estimator put typical jobs around $300–$1,400, with a worked example of roughly $407–$814 for a 1,000-square-foot roof at about $0.58 per square foot. Again, this is a third-party Orlando-metro estimate, not Sanford-specific and not this company's own pricing — treat it as a starting reference point, not a quote.
Generally no, for shingle roofs — see the method comparison above. Pressure washing is not recommended for asphalt shingles because of the granule-stripping and water-intrusion risk. It can sometimes be appropriate for certain hard surfaces, but a roof is not the place to reach for it; soft washing is the lower-risk method for shingle and tile alike.
Describe what you're seeing on the roof and we'll tell you the right method for it.
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