Florida Attic Insulation Code

Framed wall insulation must meet or exceed r 13.

Florida attic insulation code.

Contributes to but does not supersede thermal resistance requirements for attic and roof assemblies in section c402 2 1 of the florida building code energy conservation. But the story doesn t end there. Let s say you measured your attic and you realize your attic has about 9 inches r 30 of insulation and your attic is about 40 sq feet you d need at least 3 inches of extra insulation that covers 40 sq ft to get an r value of r 38. Climate zone 1 consists of the following south florida counties.

There are different insulation requirements and recommendations for different parts of your home. Existing 3 4 inches of insulation. Yes generally a higher r value means a more effective insulator but the highest r value possible may not be necessarily right for your project. Homes should have between r 22 and r 49 insulation in the attic.

Residential requirements for insulation are divided by the location in the home. For block walls interior insulation must meet or exceed r 7 8 and exterior insulation must be r 6. Typically current best home building practices indicate an r 30 to r 38 for attic insulation. Here s what you need to know about insulation requirements in florida.

Must be inside conditioned space tested to q n 0 03 by a class 1 bers rater or class a b or mechanical contractor hvac controls. Maximum 20 of conditioned floor area. Interior insulation r 7 8 exterior insulation r 6 ceilings. Add insulation to attic.

Broward collier hendry lee miami dade monroe and palm beach and require a minimum r 30 attic insulation. Insulation in your walls floors and ceilings helps to keep your home cool in the summer and warm in the winter. To find out if you have enough attic insulation measure the thickness of the insulation. Recommended insulation levels for retrofitting existing wood framed buildings.

The florida building code identifies two distinct climate zones. What r value is best for my home. Achieving greater r values in attics the higher the r value the better the thermal performance of the insulation. If it is less than r 22 7 inches of fiber glass or rock wool or 6 inches of cellulose you could probably benefit by adding more.

Insulation requirements in florida. Blown fiberglass installed in the attic has an r value of 2 2 per inch so 12 inches of it would give you an r value of 26 4 in your attic installation project. Raised r 13 sog r 0 windows. Find your zone on the map and then use the chart to determine the level of insulation you need to properly insulate your attic walls floors and crawlspaces.