Climate zone 1 consists of the following south florida counties.
Florida attic insulation r value.
The florida building code identifies two distinct climate zones.
Energy star s map of recommended home insulation shows that the majority of florida is within zone 2.
That translates to about 12 inches of insulation.
Typically current best home building practices indicate an r 30 to r 38 for attic insulation.
The r value your home s attic needs depends on where you live.
Foam insulation r values range from r 4 to r 6 5 per inch of thickness 2 54 cm which is up to 2 times greater than most other insulating materials of the same thickness.
What r value is best for my home.
You can see on home depot s website how many inches translates to a certain r value.
Energystar recommends an r value of r 38 for most homes.
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.
Achieving greater r values in exterior walls.
Broward collier hendry lee miami dade monroe and palm beach and require a minimum r 30 attic insulation.
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.
Foam in place insulation can be injected into walls to reduce air leakage and improve r value.
The higher the r value the better it insulates.