The company

Who writes the quote

Cardinal Insulation of Boca Raton LLC. The listing name is Cardinal Insulation. Blown-in insulation is the first service. The Boca shop is 4263 NW 1st Ave, Boca Raton, FL 33431. Call (561) 654-7698.

Experience

The number on a quote comes from the attic in front of us: square feet, what is already down, whether it is dry, and whether the attic stays vented. A county-wide price per foot is not that. A photo of the hallway is not that. The planner on this site is a range. The bid is after the hatch is open.

Dry fill is sealed and topped to R-38. Wet, moldy, or rodent-damaged fill comes out first, at its own price. Attic sanitizing after that removal is a third price. It is not mold remediation for the rooms below. If animals are still inside, a licensed pest-control company gets them out. We do not claim that license.

Expertise

Quotes are prepared by Russell Y, a building scientist, BPI certified, and certified to perform blower door testing. Ask to see the BPI card at the estimate. We do not print a certificate number on this site until you have given us the one to publish.

A blower door measures air leakage of the whole house at 50 pascals. Florida's 2023 energy code, R402.4.1.2, limits a new house in climate zones 1 and 2 to 7 air changes per hour, tested to ANSI/RESNET/ICC 380. We report that number only when the test is run. An insulation price is not a blower door test. Most of the attics we touch are existing houses, and that section does not require the test when the work is a small share of the thermal envelope.

The ceiling numbers we install against are in Table R402.1.2: R-30 minimum in climate zone 1, R-38 minimum in climate zone 2. Palm Beach and Broward are zone 1. We install R-38 and check the depth. New fiberglass is about R-2.5 per inch. Settled fiberglass is about R-2.2. New cellulose is about R-3.6. Air-permeable insulation is not the air seal. The holes are closed first.

The shops

4263 NW 1st Ave, Boca Raton, FL 33431. The Boca listing. (561) 654-7698.
955 S Congress Ave, Delray Beach, FL 33445. Customers can walk in. Same phone.
681 SW 16th Ter, Pompano Beach, FL 33069. Same phone.
17628 Brian Way, Jupiter, FL 33478. Cardinal Insulation of Jupiter. (754) 253-9607.

Other cities on this site are service areas. They are not extra shops.

A 2026 listing

Quality Business AwardsBest Insulation ContractorBoca Raton, Florida · 2026

Quality Business Awards lists Cardinal Insulation as the Best Insulation Contractor in Boca Raton, Florida, for 2026, in the insulation contractor category. Their page is the record. It is not a Florida contractor license, and it is not the BPI card.

What you can check

The shop address, by walking in or opening the map.
The BPI card, at the estimate.
The general-liability certificate, if a property manager needs it. Ask and we send it.
The code tables linked above, which are the public Florida book, not our brochure.
The company name on www.yelp.com www.mapquest.com local.yahoo.com

We do not quote a dollar amount off the power bill. We do not claim R-49 or R-60 is the Florida prescriptive ceiling for these counties. We do not call loose fill an air seal.

The longer explanations are which insulation belongs in the house and how a South Florida attic works.

Call (561) 654-7698

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
Item	Number	What it means
Zone 1 ceiling, Florida code	R-30 minimum	Palm Beach and Broward
Zone 2 ceiling, Florida code	R-38 minimum	Not R-49 and not R-60
What Cardinal installs	R-38, depth checked	Above the zone 1 floor
New blown fiberglass	About R-2.5 per inch	Not R-3.2 to R-3.8
Settled fiberglass	About R-2.2 per inch	4 inches is about R-9
New cellulose	About R-3.6 per inch	Denser. Still not an air seal
Open-cell foam	About R-3.6 per inch	A roof-deck product
Closed-cell foam	About R-6.5 per inch	2 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.