Concrete in Cape Coral
Concrete in Cape Coral never freezes, but it has to handle very heavy rain, intense heat during placement, sandy ground, and in some years, storm surge.
No frost, lots of rain
NOAA's engineering weather data for Fort Myers lists no freeze-thaw cycles or frost depth, and a 100-year rainfall rate of 4.5 inches per hour. Without frost, the big concern is water: where rain goes when it runs off a driveway or patio, and what it does to the ground underneath. Slabs need slope to move water away from the house and toward a swale or drain. Ask the contractor what slope they'll use and where the water will end up. Water that ponds against a slab or a foundation softens the base and washes out sand.
Heat during placement
NOAA gives a 1% summer design temperature of 93°F for Fort Myers. In heat, concrete sets quickly and the surface can dry before the slab underneath, which causes cracking. Ask whether the crew pours early in the morning in summer, whether they'll use set-retarding admixtures, and how they'll cure the slab: wet curing, curing compound or covers.
Sandy base
Much of the ground here is sand and fill. Sand that's not compacted settles, and settled slabs crack. Ask how the contractor will prepare and compact the base, how thick the slab will be, and what reinforcement they'll use. Ask where control joints will go.
Storm surge
During Hurricane Ian, the National Hurricane Center found maximum storm surge inundation of 6 to 9 feet above ground in Pine Island, Cape Coral and other communities near the mouth of the Caloosahatchee. Surge and receding water undermine slabs, wash out base material and damage seawalls and docks along canals. If a slab sounds hollow or has dropped since a storm, ask the contractor whether the base needs to be rebuilt rather than just patched.
Florida's licenses
Florida contractors either hold a state certificate of competency, with a license number beginning with C, valid anywhere in the state, or a registration, beginning with R, valid only in the local jurisdictions where they met competency requirements. Ask the contractor for their license number, look it up on the Florida DBPR license search, and check that the license type covers the work. Ask who pulls the permit; driveway approaches and work near seawalls may need city approval.
Before you sign
Ask what happens if they find old concrete, roots or soft ground during excavation and how that's priced. Get slab thickness, base, reinforcement, finish and curing instructions in writing.