Siding and exterior walls in Port St. Lucie
A Port St. Lucie exterior wall, whether it's stucco over block, fiber cement, vinyl or wood, has three jobs: stay on the house in a hurricane, keep rain out of the wall and hold up to sun and damp air year after year. A siding quote should show how the product and the installation handle each one.
Rated for the wind
NOAA's engineering weather data for Vero Beach, the station nearest Port St. Lucie, lists a 50-year basic wind speed of 140 mph. Siding fails in a storm when panels pull loose and the wind gets behind them. Ask:
- what wind rating the siding product carries, and whether it's tested for the design wind on your house;
- what fastener type and spacing the manufacturer requires for that rating, and whether the crew will follow it;
- how the starter strip, corners and trim are attached, since that's often where failures start;
- whether the product has Florida product approval for this use.
Rain that moves sideways
The same NOAA sheet lists a 100-year rainfall rate of 4.5 inches per hour. Wind-driven rain gets pushed up and behind siding at laps, joints and around windows and doors. The siding itself is only the outer layer. What keeps the wall dry is behind it:
- a water-resistive barrier lapped so water runs down and out;
- flashing at windows, doors, roof-wall intersections and penetrations such as hose bibs and vents;
- a way for water that gets behind the siding to drain out at the bottom.
Ask each contractor to describe each of these, and whether they'll replace damaged sheathing they find once the old siding is off.
Humidity and mildew
NOAA counts about 3,067 hours a year at Vero Beach with the wet-bulb temperature at 73°F or higher. Shaded north walls and walls behind shrubs stay damp and grow mildew and algae. Ask about products and finishes that clean up easily, keep plantings back from the wall and plan on a gentle wash every year. High-pressure washing can force water behind siding and damage stucco.
Termites and wood
A University of Florida study published in February 2026 found that the invasive Formosan subterranean termite is now established in most of Florida's coastal counties and major urban centers, and that it and the Asian subterranean termite are still spreading. Wood trim, fascia and wood siding are food for termites, and siding that touches soil or mulch gives them a hidden path into the wall. Ask for a gap between siding and the ground, and ask what the contractor will do if they find termite damage once the old siding is off.
Stucco and block
If your house is stucco over concrete block, the stucco is the siding. Hairline stucco cracks are common. Wider cracks, bulges or hollow-sounding patches can mean water is getting behind it. Ask how the contractor will repair stucco, how they'll match the texture and whether they'll seal the cracks before painting.
Comparing quotes
Get every quote on the same terms: the product and its wind rating, fasteners, the water-resistive barrier, flashing, trim, sheathing repairs, removal and disposal, the permit and both the product warranty and the workmanship warranty. Ask how long the installation will take and how the crew will protect landscaping and windows.