Exterior Mold & Mildew Removal in Pinellas County, FL

Exterior mold and mildew removal is a low-pressure detergent treatment for the organic growth that Florida humidity feeds on roofs, stucco, siding, concrete, and pool decks. The solution is applied at low pressure, given dwell time per the product label, and rinsed, with the method matched to each surface material and its condition. Cool Breeze has treated exterior growth across Tampa Bay since 1999, and the accepted written quote documents surfaces, method, precautions, and exclusions. Call 727-584-6622 for a free written quote.

Where mold and mildew show up on Pinellas County homes

Heat, humidity, and summer rain make organic growth a year-round condition here. Green and gray mildew film establishes on shaded north walls and under eaves; black algae streaks spread down shingle and tile roofs; dark mold patches build on concrete driveways, sidewalks, and pool decks; and screen enclosures, fences, and gutter faces collect their own film. Each surface is reviewed on site, because the growth, the material underneath it, and the right response differ from wall to roof to slab.

How a soft-wash treatment works

Cleaning solutions are applied at low pressure and allowed to work per the product label, then the surface is rinsed. Roofs are treated with no surface blasting, painted walls get a gentler plan than concrete, and test areas are used where a coating or finish is in question. The written quote states the proposed products, dilution, dwell, rinsing, and precautions rather than one setting for everything.

Exterior cleaning is not mold remediation

This service addresses visible organic growth on exterior surfaces. Indoor mold assessment and remediation are separately licensed trades in Florida, and no cleaning visit is a structural, roofing, environmental, or mold inspection. If mold appears inside the home, or a wall shows signs of moisture intrusion, that calls for a licensed mold assessor before any exterior wash is scheduled.

What the written scope should address

• Included surfaces: which walls, roof areas, slabs, or enclosures are treated, and what is excluded.

• Method per material: the pressure, products, and dwell proposed for each surface and condition.

• Precautions: product-label directions, landscape pre-wetting and rinsing, runoff controls, people and pets.

• Known limitations: stains that are not organic growth, like rust or oxidation, behave differently and are identified ahead of time.

• Schedule and price: one documented figure, controlled by the accepted written quote.

Which service treats which surface

Mildew on walls is handled by a house wash, roof streaks by a soft wash roof cleaning, mold on concrete by driveway and concrete cleaning, and film on enclosures by pool cage cleaning. One written quote can combine them, and gutter cleaning is included at no charge with any roof cleaning. City-specific house washing details are on the Clearwater, St. Petersburg, Largo, and Palm Harbor pages.

Mold and mildew removal FAQs

Is the black staining on my roof mold?

The dark streaks on Pinellas County shingle and tile roofs are usually Gloeocapsa magma, an airborne algae, often growing alongside mildew and lichen. It feeds on moisture and the limestone filler in shingles. A low-pressure soft wash treats the growth; the cause and extent are reviewed on site before a method is proposed.

Can you remove mildew from painted stucco and siding?

Yes. A detergent wash applied at low pressure lifts the green and gray mildew film that builds on stucco, block, and vinyl walls, followed by a thorough rinse. Paint condition is documented first, and anything the wash cannot change, like oxidized chalky paint or stains that have etched the surface, is called out as a known limitation in the written scope.

Do you handle indoor mold?

No. Cool Breeze cleans exterior surfaces only. Indoor mold assessment and remediation are separately licensed trades in Florida, and exterior cleaning is not a structural, roofing, environmental, or mold inspection. For interior mold or suspected moisture intrusion, contact a licensed mold assessor.

How long do surfaces stay clean after treatment?

There is no universal answer. Shade, tree cover, drainage, sprinkler overspray, and coastal humidity decide how quickly organic growth returns to a given wall, roof, or slab, so schedule follow-up cleaning from the visible condition of the surface rather than a fixed calendar.

Is the treatment safe for plants and pets?

The written scope identifies product-label directions, dilution, runoff controls, and landscape rinsing, and a ground person pre-wets and rinses plantings during the treatment. Tell us about ponds, gardens, or sensitive landscaping before accepting the quote; no cleaning process can promise zero exposure.

Want the deeper how-and-why on roof algae? Read why Florida roofs grow black streaks and the soft wash vs pressure wash comparison.