Florida Attic Insulation R Value

The higher the r value the better it insulates.

Florida attic insulation r value. The r value your home s attic needs depends on where you live. Climate zone 1 consists of the following south florida counties. 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 the thermal performance of the insulation.

You can achieve better thermal performance in your attic by adding an additional layer of insulation. What r value is best for my home. The florida building code identifies two distinct climate zones. Broward collier hendry lee miami dade monroe and palm beach and require a minimum r 30 attic insulation.

Achieving greater r values in exterior walls. Typically current best home building practices indicate an r 30 to r 38 for attic insulation. You can see on home depot s website how many inches translates to a certain r value. 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.

That translates to about 12 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. Foam in place insulation can be injected into walls to reduce air leakage and improve r value.