Florida Attic Insulation R Value

You can achieve better thermal performance in your attic by adding an additional layer of insulation. Energystar recommends an r value of r 38 for most homes. You can see on home depot s website how many inches translates to a certain r value.

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Climate zone 1 consists of the following south florida counties.

Florida attic insulation r value.

Energy star s map of recommended home insulation shows that the majority of florida is within zone 2. 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. 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. The r value your home s attic needs depends on where you live.

Broward collier hendry lee miami dade monroe and palm beach and require a minimum r 30 attic insulation. Foam in place insulation can be injected into walls to reduce air leakage and improve r value. What r value is best for my home. That translates to about 12 inches of insulation.

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. The higher the r value the better the thermal performance of the insulation. Achieving greater r values in exterior walls. The florida building code identifies two distinct climate zones.

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. The higher the r value the better it insulates. Typically current best home building practices indicate an r 30 to r 38 for attic insulation.

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