Florida Attic Insulation R Value

Typically current best home building practices indicate an r 30 to r 38 for attic insulation.

Florida attic insulation r value.

The florida building code identifies two distinct climate zones. 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. Climate zone 1 consists of the following south florida counties. 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.

You can see on home depot s website how many inches translates to a certain r value. Achieving greater r values in exterior walls. Energy star s map of recommended home insulation shows that the majority of florida is within zone 2. The higher the r value the better it insulates.

That translates to about 12 inches of insulation. You can achieve better thermal performance in your attic by adding an additional layer of insulation. Foam in place insulation can be injected into walls to reduce air leakage and improve r value. The higher the r value the better the thermal performance of the insulation.

Broward collier hendry lee miami dade monroe and palm beach and require a minimum r 30 attic insulation. Energystar recommends an r value of r 38 for most homes. This zone has a recommended r value of 30 to 60 for an uninsulated attic r25 to r38 for an attic with existing insulation and r13 to r19 for the floor.