
Key Biscayne · Seasonal guide
Building Facade Cleaning Through the Key Biscayne Seasons
Key Biscayne's island location means building exteriors face year-round salt exposure plus distinct seasonal patterns that each affect cleaning needs differently. Here is how we approach each part of the year.
Request a Free Quote01 / Seasonal guide
Winter and Spring: Dry Season Salt Buildup
With less rainfall from roughly November through April, salt film builds up steadily with fewer natural rinses from rain. This is typically the season when property owners notice the clearest haze and early efflorescence staining on stucco and concrete surfaces.

02 / Seasonal guide
Late Spring: Algae and Mildew Growth
As humidity rises heading into summer, shaded and north-facing walls become more prone to algae and mildew growth. Combined with salt residue, this creates a stubborn combination that plain rinsing does not fully address.
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Summer and Fall: Storm Season
Frequent rain during hurricane season provides some natural rinsing, but wind-driven storms also deposit sand, salt spray, and debris that heavy rain alone does not fully remove. Post-storm inspections are common during this period to check for both soiling and any physical damage to the exterior.
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Recommended Seasonal Cleaning Cycle
Based on these patterns, we generally recommend:
- One cleaning in late winter, before peak humidity season
- One cleaning in late spring or early summer, addressing early algae growth
- One cleaning in late summer or early fall, after major storm activity
- An additional treatment as needed for buildings with heavier salt exposure or staining
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Why the Cycle Matters More Here Than Inland
Because Key Biscayne combines constant salt air with distinct seasonal humidity and storm patterns, a fixed once-a-year cleaning schedule tends to underperform compared with a seasonally timed plan.
Customer words
What Customers Say About Hank Robotics
“Never seen this kind of speed and precision, my office building is sparkling from the outside, and the hank team saved me lots of cost; I highly recommend this type of tech cleaning.”
— Adina Yen
“The service was great, I really enjoyed watching the drone clean, great experience. I would recommend the services to anyone.”
— Benedite Rene
“Amazing work and very professional. Came with everything prepared and all forms with them.”
— Alejandro
Before the visit
Frequently Asked Questions
Does storm season clean facades naturally through rain?
Rain helps but does not fully remove salt spray or sand deposited by wind during storms, so a post-storm check is still worthwhile.
When is algae growth worst for Key Biscayne buildings?
Late spring and early summer typically bring the heaviest growth, especially on shaded or north-facing walls.
How many cleanings per year do most Key Biscayne buildings need?
Three to four seasonally timed visits is typical, more than the one to two often recommended inland.
Should I schedule a cleaning right after a storm?
Yes, a post-storm cleaning and inspection helps catch both soiling and any storm-related damage early.
Key Biscayne · Florida

