Safe, low-pressure soft washing for stucco exteriors — removing algae and mold without pitting, cracking, or surface damage throughout Southwest Florida.
Stucco is the dominant exterior finish on Southwest Florida homes — more than 80% of residential properties in Lee and Collier counties have stucco or stucco-painted block exteriors. It is a durable, weather-resistant material in the right conditions, but it has one critical maintenance requirement: it must never be cleaned with high-pressure water. Stucco is a cementitious material with a textured surface that is inherently fragile under direct water impact. High-pressure washing causes surface pitting, hairline fractures, and finish erosion — damage that opens the door to moisture intrusion and is expensive to repair correctly.
The correct method for stucco cleaning is soft washing — low-pressure application of a professional cleaning solution that kills algae, mold, and biological growth at the cellular level, followed by a gentle rinse. The cleaning solution does the work, not the water pressure. This approach removes biological growth without mechanical stress on the stucco surface, produces a clean that lasts longer because the organism is killed rather than just surface-removed, and carries no risk of the cracking and pitting that pressure washing causes.
Rain Exterior Home Service provides stucco soft washing throughout Fort Myers, Cape Coral, Naples, Bonita Springs, Estero, Marco Island, and throughout Lee and Collier counties. We inspect the stucco condition before cleaning, note existing cracks or areas of concern, and advise the homeowner before applying any solution. Our technicians are trained specifically in the differences between surface types and will not use high-pressure technique on stucco regardless of how significant the biological growth is — the correct approach takes slightly longer but produces better results and causes no damage.
Stucco cleaning is often combined with soffit and fascia cleaning — the overhangs above the walls accumulate algae from roof runoff and need the same soft wash treatment. Ask about a full exterior package that combines roof, stucco, soffits, and gutters in a single service visit.
Results
How It Works
We inspect the stucco for cracks, delamination, and paint condition before cleaning. Damaged areas are noted and the homeowner is advised before any solution is applied.
A biodegradable soft wash solution is applied at low pressure — never with a wand on high PSI. The solution penetrates porous stucco to kill algae and mold at the root, not just at the surface.
The solution is allowed to work for 10 to 20 minutes. This contact time is essential for killing biological growth completely and preventing rapid regrowth.
A low-pressure rinse washes the solution and dead biological material off the stucco surface. We work from top to bottom and inspect every section before completing the job.
Common Questions
Stucco is a Portland cement-based material that is inherently fragile — it is designed to protect exterior walls but is not designed to withstand direct high-pressure water impact. Pressure washing stucco at high PSI causes surface pitting, hairline cracking, and loss of the finish texture. These micro-damages create new entry points for moisture and biological growth, making the problem worse after each high-pressure cleaning. More critically, high-pressure washing can force water through existing hairline cracks into the wall cavity, causing internal moisture damage that is far more expensive to repair than stucco cleaning.
Yes, but we inspect and document existing cracks before cleaning and advise the homeowner on any areas where water intrusion is a risk. For homes with significant stucco cracking, we reduce solution concentration and use lower pressure to minimize the risk of water entering the wall cavity. Cleaning a stucco exterior does not repair cracks — that requires separate stucco repair work — but it can remove the biological growth that is feeding on and widening the cracks over time.
Most stucco homes in Southwest Florida benefit from professional cleaning every 12 to 18 months. The base of exterior walls — where sprinkler systems hit, where rain splashes from the ground, and where there is the least sun — tends to develop algae fastest and may need attention more frequently. A full exterior soft wash every 18 months is the most common maintenance schedule for stucco homes in Fort Myers, Cape Coral, and Naples.
Light efflorescence — the white calcium deposits that appear on stucco as water-soluble minerals migrate to the surface — can be reduced by soft washing. Heavy efflorescence may require a separate treatment with a diluted acid solution to dissolve the calcium deposits before the main cleaning. We assess the extent of efflorescence during our inspection and advise on whether additional treatment is needed.
Yes. Painted stucco is cleaned using soft washing at low pressure and reduced solution concentration. The cleaning solution removes algae and mold growth on the painted surface without stripping the paint. For stucco with old, chalky, or peeling paint, we will advise you before cleaning — water can enter behind loose paint and cause it to peel further regardless of the cleaning method. In those cases, the right sequence is repair, paint, then maintain with soft washing.
What Homeowners Say
"The stucco on our home had green algae from the base all the way up on the shaded sides. They soft washed the entire exterior — no high pressure, no damage — and the stucco looks clean and fresh. Very professional."
"We had tried to clean the stucco ourselves with a pressure washer and caused small cracks. Rain Exterior Home Service came out, explained the correct method, and cleaned the entire exterior safely. No more cracks from cleaning."
Serving Fort Myers, Cape Coral, Naples, Bonita Springs, and all of Southwest Florida. Most jobs quoted within 24 hours.
Rain Exterior Home Service
We Regularly Serve Homeowners in Southwest Florida: