Mold remediation in Florida, built around block homes and AC

Mold remediation in Southwest Florida, explained

Remediation starts with the water, not the mold

Mold is a symptom. In a Southwest Florida home, the cause is almost always one of a handful of things: a roof or window leak during summer storms, a slow plumbing leak under a sink or behind a dishwasher, an AC condensate line that clogs and overflows, storm surge or flood water, or indoor humidity that stays too high because the AC can’t keep up or has been turned off.

Any remediation that doesn’t deal with that cause is temporary. Before we remove anything, the moisture source has to be identified and a plan made to correct it. Sometimes that’s a roofer or plumber. Sometimes it’s an AC technician, or simply a change in how the house is run while it sits empty.

Why block homes need a different approach

Most homes in Lee, Collier and Charlotte counties are concrete block with stucco on the outside and drywall, often on furring strips, on the inside. Block is porous. It absorbs wind-driven rain through hairline cracks in the stucco and gives the water up slowly, toward the cooler, air-conditioned side of the wall. The result is drywall that can grow mold on the back while the painted face looks clean.

That changes how we work. Moisture readings go on the block itself, not just the drywall. When drywall comes out, the block face and furring are HEPA vacuumed and cleaned, and nothing goes back up until readings show the wall is dry. Our guide to mold in concrete block homes goes deeper on why these walls behave the way they do.

The AC system is part of the job

In Florida, the air handler runs for most of the year, and it’s cold and wet inside by design. Drain pans, coils, return plenums and the drywall around an AC closet are common places for mold to grow. Once it’s there, the system moves spores and contaminated dust through every room it serves.

During remediation, we seal the returns and supplies in the work area so the AC doesn’t pull dust from the containment into the rest of the house. If the assessment shows the air handler or ducts are involved, they’re cleaned before the system runs normally again. The AC, duct and HVAC mold page covers that work in detail.

Removing mycotoxins, not just killing mold

Some molds that grow in water-damaged buildings produce mycotoxins. These compounds aren’t alive, so biocides and bleach don’t remove them, and they stay in settled dust and on building materials after the mold is dead. That’s the gap in most mold work, and it’s the reason our process doesn’t stop at visible growth.

Physical removal comes first: damaged materials out, then HEPA vacuuming and detailed wiping of every surface in the work area. Enzyme treatment follows on the cleaned surfaces to break down what remains. When mycotoxins are the main concern, our mycotoxin remediation service extends that cleaning to belongings and to the rest of the home.

Who tests, and why it’s not us

Florida licenses mold assessors and mold remediators separately under Chapter 468, Part XVI. Section 468.8419 says an assessor may not remediate a structure it assessed within 12 months, and a remediator may not assess, clearance included, a structure it remediated within 12 months. Certified Division I contractors are the exception.

On our Southwest Florida projects, an independent licensed mold assessor inspects and samples the home, writes the scope, and performs clearance testing. We do the remediation to that protocol. The company testing your home has no reason to find more mold than is there, and the company removing it can’t grade its own work. If a company offers to test, remove and clear your home all by itself, ask how that fits Florida law.

Keeping it from coming back

• Keep the AC running and the condensate drain clear, including while you’re away.
• Watch indoor humidity with an inexpensive hygrometer, and add dehumidification if it stays high.
• Repair stucco cracks and window seals before rainy season.
• Dry any leak within a day or two. In this climate, that’s the window before mold starts.
• Have the home checked after any storm that put water inside, even if it looks dry.

We remove mold and mycotoxins from buildings. We don’t diagnose or treat medical conditions. If you have symptoms, please work with a doctor. With your permission, we’re glad to share test results and our plan with them.