Built for real Jacksonville summers.
Spray foam insulation for Jacksonville, Florida homes and businesses — IECC Climate Zone 2A, humidity that runs 74-95% through the summer, and an AC bill and musty attic that show it. Open-cell and closed-cell foam for attics, walls, garages, and new construction, built to stop heat and humid air before they reach your living space.
A cooler, drier home, lower AC bills
Tell us about your home — a musty attic, an unusable garage bonus room, or a new build — and we'll build a clear, no-pressure quote.
- Cut summer cooling bills
- Stop humid air at the roofline
- Zone-2A-appropriate R-values
Jacksonville's climate runs on heat and humidity. Your insulation should be built for that.
Jacksonville sits in IECC Climate Zone 2A — a genuine hot-humid coastal climate where the roof deck absorbs sun and humid air most of the day and summer relative humidity commonly runs 74-95%. The Department of Energy's general guidance for hot-humid Zone 2 homes points to attic insulation in the R30 to R49 range, and a lot of Jacksonville homes, especially older ones, are running well below that.
Spray foam insulation is built for exactly this kind of climate. It insulates and air-seals in a single application, stopping the infiltration of hot, humid air that drives up cooling bills and creates the conditions for musty odors and mold — and closing the gaps that fiberglass batts lie across without ever sealing. Closed-cell foam goes a step further, acting as a genuine moisture barrier rather than simply slowing heat transfer.
We're a dedicated spray foam insulation specialist for Jacksonville and Northeast Florida — not a generalist treating every Florida climate and construction type the same way.
Complete spray foam insulation for Jacksonville homes & businesses
From attic humidity control to garage and bonus-room fixes to whole-home new construction — click any service to see how it works, what it costs, and why it fits Jacksonville's climate.
Comfort, dry air, and savings — built for the coast.
Humidity & moisture control
Sealing the attic and roof deck stops the humid-air-into-living-space problem at the source, instead of just asking your AC to keep up and hoping mold doesn't follow.
Zone-2A-appropriate R-values
We build to DOE guidance for hot-humid Zone 2 homes — attic R30-R49 — not a generic one-size-fits-all number.
Roof-deck adhesion for coastal wind
Closed-cell roof-deck foam bonds to the sheathing, adding real wind-uplift resistance — genuine construction performance for hurricane-adjacent Northeast Florida.
Local, honest advice
We recommend open-cell, closed-cell, or a mix based on your home's actual needs — never a one-size-fits-all pitch.
Proudly serving Jacksonville & Northeast Florida
Local crews across Jacksonville and the surrounding communities — we know these homes and this climate.
From free assessment to a cooler, drier, more efficient home
Free assessment
We evaluate your home, talk through goals and budget, and give you a clear, itemized quote.
Prep the space
We prep the area, mask surfaces, and stage equipment — old or moisture-damaged insulation removed first if needed.
Spray-apply foam
Open-cell or closed-cell foam is sprayed to your Zone-2A-appropriate R-value target, sealing every gap against heat and humidity.
Inspect & verify
We inspect the finished application and walk you through what to expect this summer.
Jacksonville spray foam insulation FAQs
Jacksonville sits in IECC Climate Zone 2A, a hot-humid coastal climate where summer relative humidity commonly runs 74-95% and the roof deck absorbs sun and humid air most of the day. Air conditioning typically makes up the largest single share of a Jacksonville home's summer electric bill, and an under-insulated, poorly air-sealed attic is one of the biggest reasons AC units run longer than they should — and one of the biggest reasons humid air gets into the attic in the first place.
Spray foam insulation in the Jacksonville area typically runs $1 to $5 per square foot installed, averaging around $3 per square foot, with open-cell at the lower end and closed-cell at the higher end. A typical attic or garage project often falls in the $1,500-$2,500+ range depending on square footage. A free on-site assessment gets you a firm number for your home.
Open-cell is lighter and less expensive, a strong fit for interior walls and properly vented attic-floor coverage. Closed-cell is denser, delivers the highest R-value per inch (R-6 to R-7), adds structural rigidity, and acts as a genuine moisture barrier — making it the right call for roof decks, exterior walls, and garages facing Jacksonville's year-round humidity.
For homes with under-insulated attics or leaky building envelopes, yes — often meaningfully. Spray foam air-seals and insulates in one step, which stops the infiltration of hot, humid outside air that drives up AC runtime through a Jacksonville summer. Industry estimates suggest 20-40% cooling-cost reductions are achievable for a poorly insulated home.
Indirectly, yes, and it's one of the main reasons Jacksonville homeowners choose it. Closed-cell spray foam acts as a genuine moisture barrier and air-seals the assembly it's applied to, which removes much of the humid-air infiltration and condensation risk that let mold and musty odors take hold in an attic or wall cavity in the first place.
Yes. We serve Jacksonville and the surrounding Northeast Florida area — Jacksonville Beach, Orange Park, St. Augustine, Fleming Island, Ponte Vedra Beach, Middleburg, and Yulee.
Get your free insulation quote
Tell us about your home and we'll put together a clear, no-pressure spray foam insulation quote — built for Jacksonville's real hot-humid coastal climate.