Blown-In Insulation in Florida

Blown-in is the fastest, most cost-effective way to bring a Florida attic up to the R-30 to R-38 range the Florida Building Code Energy Conservation chapter calls for in Climate Zones 1 and 2.

Fiberglass or cellulose in a Florida attic

Both work. Blown fiberglass doesn't absorb moisture, doesn't settle much, and doesn't feed mold — meaningful advantages in a climate where your attic will eventually see water from a leak or a storm. Cellulose has slightly better R-per-inch, fills irregular cavities more completely, and dampens sound better, but it holds water when it gets wet and it settles over time.

For most Florida attics we lean fiberglass. For dense-pack wall retrofits and sound applications, cellulose often makes more sense.

Getting to R-38 and actually staying there

Depth is everything, and depth is where corners get cut. Blown fiberglass at roughly R-2.5 per inch needs about 15 inches of settled depth to hit R-38; cellulose needs about 11 inches. A crew in a hurry blows 9 inches, calls it R-38, and nobody ever checks.

We install depth markers throughout the attic per the manufacturer's coverage chart, photograph them, and leave the bag count and coverage documentation with you. You should be able to walk up there a year later and verify what you paid for.

Prep work that determines the result

Before a single bag goes in the hopper: baffles at every soffit vent so we don't block ventilation, air sealing at the ceiling plane, dams around the attic hatch and any recessed lights that require clearance, bath fans verified to terminate outside, and any knob-and-tube or compromised wiring flagged.

Blowing insulation over an unprepared attic is fast, cheap, and mostly a waste of the homeowner's money.

Topping up vs. removing and starting over

If the existing insulation is dry, uncontaminated, and evenly distributed, adding on top of it is perfectly good practice and saves you the removal cost. If it's wet, matted, rodent-soiled, or full of construction debris, adding on top just buries the problem where you'll never see it. We'll tell you which situation you're in and show you photos.

Why Florida homeowners and builders choose Standard Insulation

• Licensed and fully insured Florida insulation contractor
• Open 24 hours a day, 7 days a week — a real person answers
• Free written, itemized estimates with options priced side by side
• Owner-operated by Dylan Cecere, who still walks jobs personally
• Every city in all 67 Florida counties, with our densest coverage in Palm Beach County
• Clean job sites, containment, and a walkthrough before we leave