Commercial Roof Cleaning in South Florida
Remove algae, mold, lichen, and black streaks from commercial roofs without pressure washing damage — ARMA-approved soft wash method.
South Florida's combination of intense heat, year-round humidity, and subtropical rainfall creates ideal conditions for algae, mold, mildew, and lichen to colonize commercial roofing surfaces — reducing reflectivity on TPO and white-coated flat roofs, accelerating granule loss on shingle surfaces, and creating slip hazards on walkable tile roofs. TitanFlow Exteriors provides professional commercial roof cleaning using the Asphalt Roofing Manufacturers Association (ARMA) recommended soft wash method — low pressure, biodegradable biocide solution — to clean commercial roofs safely without the damage that pressure washing inflicts on roofing materials.
Our Process
Commercial roof cleaning begins on the ground with a safety and access assessment. We identify the roof type and material (TPO membrane, modified bitumen, built-up roofing, concrete tile, clay tile, standing seam metal, or metal R-panel), the contamination profile (Gloeocapsa magma algae streaks, green algae, mold colonies, lichen, or atmospheric soiling), and the access requirements (ladder, hatch, parapet access, or aerial equipment). For roofs over 2 stories or without safe perimeter access, we use boom lift access — never walking on steep or unsecured roofing without a fall arrest system in place.
Cleaning is performed exclusively with the soft wash method: a sodium hypochlorite biocide blend mixed at the appropriate concentration for the roof type and contamination level, applied from the ridge or center outward using a low-pressure application system. Solution dwell time is carefully managed — typically 10–20 minutes — to allow full biocide penetration of the algae or mold colony before the rinse. Rinsing is performed from the center or ridge outward and downward, directing all runoff toward the roof drainage system. We pre-wet all downspout discharge areas and surrounding landscaping before rinsing begins and apply a neutralizer rinse to downspout discharge zones to protect plantings. For flat membrane roofs (TPO, EPDM, modified bitumen) we use only soft brushing and low-pressure rinse — never chemical concentrations that could attack the membrane or accelerate UV degradation.
What's Included
- Roof type and contamination profile assessment from ground and roof-level inspection
- Biocide blend mixed at substrate-appropriate concentration (stronger for tile/metal, gentler for membrane roofs)
- Low-pressure biocide solution application from center/ridge outward with timed dwell period
- Pre-wetting of all surrounding vegetation, downspout discharge areas, and ground-level surfaces
- Low-pressure top-down rinse with runoff directed to roof drainage system
- Neutralizer rinse at all downspout discharge points to protect landscaping and ground surfaces
Property Types We Serve
Why Commercial Clients Choose TitanFlow
- Overnight & weekend scheduling available
- Certificate of Insurance on request
- Fully insured — bonded & licensed
- 500+ commercial jobs completed
- Eco-safe, biodegradable solutions
- TopGolf Pompano Beach trusted
Common Questions
Why is soft washing recommended for commercial roofs instead of pressure washing?
Pressure washing roof surfaces removes protective granules from shingles, damages tile surfaces, can force water under membrane laps, and voids most roofing manufacturer warranties. The ARMA (Asphalt Roofing Manufacturers Association) specifically recommends low-pressure chemical cleaning as the only approved cleaning method for roofing surfaces. We follow this guidance on every commercial roof job.
Will roof cleaning damage our TPO or flat roofing membrane?
Not with our approach. For TPO and single-ply membrane roofs, we use highly diluted biocide solutions — well below the concentration that would affect the membrane chemistry — combined with very low-pressure rinsing and soft brush agitation where needed. We do not use high-pressure water or concentrated bleach on membrane roofing.
How often should a commercial roof be cleaned in South Florida?
In South Florida's climate, most commercial roofs develop visible algae or mold growth within 1–2 years. Cleaning frequency depends on roof material, shade exposure, and proximity to vegetation. Tile and metal roofs in shaded or humid locations may need annual treatment; TPO membrane roofs in open sun exposure may need cleaning every 2–3 years. We recommend a site assessment for a property-specific recommendation.
Can roof cleaning extend the life of our commercial roofing system?
Yes. Algae, mold, and lichen on roofing surfaces accelerate material degradation in several ways: algae on TPO reduces reflectivity and increases UV heating; lichen on tile physically attacks the surface with rhizines that penetrate and mechanically fracture the tile substrate; organic growth on granulated membranes reduces drainage efficiency. Regular cleaning removes these agents and extends the effective service life of the roofing system.
Will the chemicals you use on the roof harm our rooftop HVAC equipment?
We take specific precautions around rooftop HVAC units, skylights, plumbing stacks, and other roof penetrations. HVAC unit intakes are covered or the system is shut down during solution application. Equipment housings and electrical conduits are rinsed promptly after exposure. We discuss equipment protection specifically with your facilities team before starting roof work.
Are you insured for commercial roof work?
Yes. TitanFlow Exteriors carries full general liability insurance that covers commercial roof cleaning operations. We use fall protection equipment as required by OSHA standards, and our COI is available for roofing warranty documentation, property management files, or risk management review.
Can you clean a roof while the building is occupied?
In most cases, yes. Soft wash roof cleaning is performed on the exterior and does not require building evacuation. We do coordinate with your facilities team on any roof hatch access requirements and notify building management before starting so staff is aware of activity on the roof.
Will the runoff from roof cleaning harm our landscaping?
We take active steps to protect landscaping from cleaning runoff. This includes pre-wetting all plantings within the runoff zone before chemical application, monitoring runoff direction during the rinse phase, and applying a sodium bicarbonate neutralizer to downspout discharge areas and surrounding plantings after the rinse. These steps have allowed us to clean thousands of South Florida properties without landscape damage.
Can you remove lichen from concrete tile roofs?
Yes. Lichen is the most tenacious biological growth on commercial tile roofs and requires extended biocide dwell time and sometimes multiple treatment visits for complete removal. We apply a concentrated biocide treatment, allow a full 15–20 minute dwell, and rinse thoroughly. In severe lichen cases we recommend a follow-up treatment 30–60 days after the initial cleaning to address any surviving colonies.
Do you offer combined building and roof cleaning packages?
Yes. We routinely package roof cleaning with building facade washing into a single mobilization for efficiency and cost savings. Since both services use similar equipment and chemical systems, combining them under one visit reduces the per-surface cost compared to scheduling separately. Ask about combination pricing when you call for a quote.
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