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Heron Bay attic insulation | Cardinal

Heron Bay is in Parkland, ZIP 33076. The guard gate is on Heron Bay Boulevard, off Nob Hill Road, which is Coral Ridge Drive once it crosses the county line. There is also a Hillsboro Boulevard entrance. The clubhouse side is Osprey Trail. It is a large community, on the order of three thousand houses, so one attic does not describe the next section. The houses are newer than the ranches in east Boca. Tile roofs, wide attics, and original fill that was often installed at the code floor. There is no Parkland street address. The shop is 4263 NW 1st Ave, Boca Raton. A near-me search that starts in Heron Bay is closer to other Broward shops than to that pin. This page does not invent a Parkland listing.

Even layer of blown fiberglass across a vented attic floor
The open Heron Bay attic, blown on the flat ceiling. The tray and the garage room are extra assemblies, not more of this same floor.

Newer does not mean the attic is at R-38. A house built to R-30, then left alone, is at the minimum if the depth is still even, and under it if the edges were never filled. We measure before we add. Adding a foot of fiberglass on top of a full R-30 is a different job from filling a bare eave.

Open-cell spray foam on a roof deck
The bonus-room roof, foamed, when that room is inside the house. The main attic in the photo above is not foamed.

The code minimum for these ceilings is still R-30. Climate Zone 1A covers Broward and Palm Beach. Our blown-in standard is R-38. New fiberglass is about R-2.5 per inch. Markers go in at one per 300 square feet so the depth can be read later.

Foam sealing a ceiling penetration
Cans and top plates in a newer house. The holes are cleaner. They still leak.

The bonus room over the garage is the other Heron Bay call. The open attic over the rest of the house stays a blown floor. The room in the slope, if the vents over it are closed and the deck is inside the house, is spray foam. Leaving that slope vented and stuffing batts into it is the usual mistake.

Cans, bath fans, and the top plate still leak in a newer house. The holes are just cleaner. The seal is the same hour of work. Then baffles, then the blow. Dry fill stays. Nests come out first.

Parkland Golf and Country Club is the same ZIP and the same rule. Wide attic, no shop in the community, same Boca listing. If the house is on the Coral Springs line, say the ZIP. 33076 is Parkland. 33067 and 33071 are Coral Springs.

Newer Heron Bay attics are cleaner and still wrong in a specific way. The center was blown or batted to the code floor. The tray ceiling, the dropped soffit over the kitchen, and the space over the garage were not. Those dropped areas are open to the attic on the sides. They are uninsulated walls lying on their side. A top-up that only raises the flat ceiling leaves the tray cold. The sides of the tray get covered too, or the job is not finished.

The garage bonus room is the other miss. If the floor of that room is the ceiling of the garage, and the room is conditioned, the slope and the kneewall are the boundary. Batts stapled in the kneewall and falling out are not R-38. Foam on that deck, with the vents over that room closed, is the repair. The rest of the house attic stays vented and blown.

The Google listing is Cardinal Insulation, Cardinal Insulation of Boca Raton LLC, insulation contractor, at 4263 NW 1st Ave, Boca Raton, FL 33431. Blown-in insulation is the first service. Call (561) 654-7698. This neighborhood is not a second pin.

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Measured against the Florida code

The attic numbers, not a brochure

The 2023 Florida Building Code, Energy Conservation, Table R402.1.2 sets a climate zone 1 ceiling at R-30 and a climate zone 2 ceiling at R-38. Cardinal installs R-38 and checks the inches. A Florida page that lists R-49 to R-60, or R-3.2 to R-3.8 per inch for both fiberglass and cellulose, is using a different book. Table R402.4.1.1 says air-permeable insulation shall not be used as the air seal.

Quotes are prepared by Russell Y, a building scientist, BPI certified, and certified to perform blower door testing. When the door is run, the result is air changes per hour at 50 pascals, the method in R402.4.1.2. That section limits new houses in climate zones 1 and 2 to 7 ACH50. An insulation job on an existing house is not automatically that test. We report the number only when we measured it.

Insulation numbers Cardinal uses against the Florida code
ItemNumberWhat it means
Zone 1 ceiling, Florida codeR-30 minimumPalm Beach and Broward
Zone 2 ceiling, Florida codeR-38 minimumNot R-49 and not R-60
What Cardinal installsR-38, depth checkedAbove the zone 1 floor
New blown fiberglassAbout R-2.5 per inchNot R-3.2 to R-3.8
Settled fiberglassAbout R-2.2 per inch4 inches is about R-9
New celluloseAbout R-3.6 per inchDenser. Still not an air seal
Open-cell foamAbout R-3.6 per inchA roof-deck product
Closed-cell foamAbout R-6.5 per inch2 inches is about R-13

Loose fill does not stop air. The holes are sealed first. Two inches of closed-cell foam is an air-seal coat, not a finished attic. We do not quote a dollar amount off the power bill. Ducts in a vented attic stay in the heat. The shop for the Boca listing is 4263 NW 1st Ave.

Blown-in insulation, the full pageResidential insulationWhich insulation belongs in a Florida houseWho writes the quoteHow a South Florida attic actually works

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