The hottest room in the house
Attic Insulation & Air Sealing in Bradenton, FL
Most of the summer heat that reaches your rooms comes through the attic. That is where we start.
- Free on-site estimates
- Written quote with foam type, thickness and R-value for each area
- Attic ducts, roof leaks and moisture checked before we insulate
Seal First, Then Insulate
Attic insulation and air sealing go together. In a Bradenton house the attic sits right under a sun-baked roof, and on a summer afternoon it can get far hotter than the air outside. Heat radiates down through thin insulation, and hot, humid attic air leaks into the house through every gap in the ceiling. Sealing those gaps and then adding insulation to a real depth is one of the most effective things you can do for comfort and for the AC.
Where attics leak
The usual culprits are the attic hatch or pull-down stairs, recessed can lights, bath fan housings, plumbing and wiring holes in the top plates, the gaps around the air handler platform, and duct boots where supply registers meet the ceiling. Each one is small. Together they add up to a hole you could put your fist through. We seal them with foam, caulk and gaskets before any new insulation covers them.
How much is enough
The 2023 Florida energy code calls for R-38 in ceilings in Climate Zone 2, which covers Manatee and Sarasota counties. For existing homes, the Department of Energy recommends adding insulation to reach R-38 to R-49 if you already have 3 to 4 inches, and R-49 to R-60 if the attic has none. Many 1970s and 1980s Bradenton attics hold well under that, often a few inches of settled fiberglass or cellulose.
Two ways to do it
The first is to insulate the attic floor: seal the ceiling, then blow cellulose or fiberglass to depth. It costs less and works well when the attic is open and the ducts are in good shape. The second is to spray foam on the underside of the roof deck and seal the vents, which makes the attic part of the conditioned space. That costs more but helps a lot when the air handler and long duct runs are up there. We look at your attic and price whichever makes sense, or both side by side.
Ducts matter here
While we are in the attic, we look at the ductwork: crushed flex duct, disconnected runs, missing insulation on the supply lines, and leaks at the plenum. We point out what we see so your HVAC company can fix it, or so you can decide whether a roof-deck foam job is worth it.
What This Covers
An attic job usually includes some or all of these:
Ceiling air sealing
Foam, caulk and gaskets at top plates, can lights, fans, plumbing holes and the attic hatch.
Blown-in top-up
Cellulose or fiberglass blown to the target depth over the sealed ceiling, with rulers left for reference.
Roof-deck spray foam
Open-cell foam under the roof sheathing to bring ducts and the air handler inside the cooled space.
Hatch and stair covers
Insulated, weatherstripped covers for pull-down stairs and scuttle hatches.
Attic Insulation & Air Sealing Costs (National Figures)
| Job | Range and source |
|---|---|
| Attic insulation, average job | $1,000 to $2,700, about $1,800 average (HomeGuide) |
| Air sealing | $350 to $3,000 (HomeGuide) |
| Blown-in, attic | $0.90 to $2.40 per sq ft (HomeGuide attic guide) |
| Spray foam on the attic floor | $1,100 to $6,800 (HomeGuide) |
| Spray foam on the roof deck | $1,500 to $9,000 (HomeGuide) |
| Spray foam, attic (existing home) | $2,500 to $12,000 (Fixr) |
| Old insulation removal | $1 to $2 per sq ft (HomeGuide) |
From HomeGuide's January 2026 attic guide and Fixr's 2025 spray foam guide. The amount of sealing, the depth you want, attic access and any removal all move the number. After we see your attic, the written estimate is the price.
How It Works
1. Attic check
We measure the existing depth, look at ducts, vents and the roof deck, and find the ceiling leaks.
2. Options in writing
Floor insulation, roof-deck foam or both, each priced with material, depth and R-value.
3. Seal the ceiling
Gaps at plates, lights, fans and the hatch get sealed before anything is covered.
4. Insulate
We blow loose fill to depth or spray the roof deck, keeping soffit vents clear where the attic stays vented.
5. Final check
Depth markers, clean-up and a walkthrough of what was done.
Attic Insulation & Air Sealing Questions
What is the attic insulation code in Florida?
The 2023 Florida Building Code, Energy Conservation lists R-38 for ceilings in Climate Zone 2, which includes Manatee County. Existing homes are not forced to upgrade, but R-38 is a sensible target when you add insulation.
Does FPL give a rebate for attic insulation?
FPL offers an instant $220 rebate when your current ceiling insulation is below R-8 and an FPL-approved participating contractor does the work. Check its program page and contractor list before you book.
Should I remove old insulation first?
Not always. Dry, clean insulation can stay, and new material goes on top. Wet, moldy, rodent-soiled or matted insulation should come out, and so should anything in the way of air sealing.
Will a radiant barrier do the same thing?
A radiant barrier cuts some of the heat radiating from the roof, but it does not stop air leaks or replace insulation depth. Sealing and insulating the ceiling usually comes first.
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Get an Attic Insulation & Air Sealing Estimate
Book a free attic check and a written quote.