Waterproofing & Mold Remediation in Boca Raton, FL
In October 2025, rain cut channels three feet deep
through Boca Raton yards.
When rain falls faster than Boca's drains can take it, the overflow crosses the lot on its way to the street and reaches the house first. Bullfrog seals the base of the block wall that water keeps reaching and takes out the mold it leaves behind.
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How the water reaches a Boca Raton house
Addison Mizner announced the first houses in Old Floresta in October 1925. The neighborhood became the city's first historic district in 1990. Most of Boca came much later: the city had 6,961 residents in 1960 and 61,492 by 1990. The typical Boca home is concrete block from the 1970s or 1980s, built on a slab.
That block is the part we waterproof. We dig down to the footing along the wall that takes the water and bond a membrane to the block and the slab edge.
The Night of October 26, 2025
A stalled front sat over eastern Florida and poured rain on south Palm Beach County for hours, as FAU scientists later explained. The city estimated about a billion gallons fell in two hours. Its public works director said he had not seen an event like it in maybe 50 years.
Water That Crosses the Lot
At the council meeting on November 4, council member Marc Wigder showed photos of three-foot-deep channels cut through private yards in Old Floresta and Camino Gardens. He said storm drains often sit more than 500 feet from the problem spots. Water heading for a drain that far off runs past the slab edge and the bottom course of block on the way.
Block Homes From the Growth Years
Boca block homes from the 1970s and 1980s sit on slabs, with a mortared joint where the wall meets the floor. Once water finds that joint, every storm that sends runoff across the lot pushes more through it.
Why does Boca Raton flood in heavy rain?
Rain can fall faster than the city's pipes and canals carry it away. The overflow then runs across streets and yards toward the nearest drain. Where that drain is a long way off, the runoff reaches the slab edge and the bottom of the block wall before it reaches the drain.
Walk your lot in the next hard rain
Watch from a doorway or a window, never from the yard while water is moving. Five checks show the route runoff takes to your walls and who looks after the drain it is heading for.
Where the water comes from
Note whether it arrives from the street, from the lot next door or off your own roof. A neighbor's yard that sits higher sends its runoff across yours.
The line it takes across the yard
Runoff follows the lowest line toward the street. After the rain, washed-out mulch, a fan of sand or a bare strip in the grass marks that line.
What it touches at the house
Look at the slab edge, the bottom course of block and the garage and door sills. A photo with a tape measure against the wall records how high the water got.
Where the downspouts empty
A downspout that empties onto the runoff line adds roof water to the wall that already takes the most. Turn it toward the lowest part of the lot instead.
The drain it is heading for
Pace out the distance to the nearest storm drain and check the grate for leaves and clippings. Inside the city limits, report a clogged drain to the city's stormwater line at 561-416-3402. The unincorporated area known as West Boca sits outside the city's reach. Palm Beach County serves it.
Sources: City of Boca Raton, Stormwater Management (stormwater line) and Resident Resources (city limits and county service); Boca Raton Police Department, 911 FAQ (the unincorporated area known as West Boca).
Start with what you can see
In Boca the usual route is runoff crossing the lot to the base of the wall. Here is how that shows up inside and which page deals with each sign.
A white crust on the lowest block in the garage
Water is passing through the block where the wall meets the slab and leaving its minerals behind as it dries. It is usually the wall that takes the runoff in every storm.
How we seal the blockSwollen baseboard or a tide line on an outside wall
Runoff got in at floor level and the drywall wicked it up. The bottom of the wall stays wet behind the paint long after the floor dries.
Water damage restoration in Boca RatonA musty closet on the side the runoff hits
A wall that gets wet in each storm and never quite dries is where mold tends to start. A moisture meter shows how far the water has spread.
Mold inspection in Boca RatonDark spots behind furniture on that wall
Mold is growing on drywall that stayed damp. It has to come out under containment. The water feeding it has to stop too.
Mold remediation in Boca Raton
Questions From Boca Raton Homeowners
What should I check inside after a flash flood?
Can a house flood from the yard even if the street drains?
Do you cover the historic houses in Old Floresta?
Does waterproofing stop water from coming under a door?
Is the city upgrading drainage in my Boca Raton neighborhood?
One company for the mold and the water behind it
Bullfrog removes mold and dries out water damage. When the water came through the foundation, we waterproof the block too, so one company handles the whole job.
Our mold work runs under Florida mold remediator license MRSR5565. Our foundation waterproofing carries a lifetime warranty against water coming through the section we treat.
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