Minimum Attic Insulation Florida

Energy star s map of recommended home insulation shows that the majority of florida is within zone 2.

Minimum attic insulation florida.

Homes should have between r 22 and r 49 insulation in the attic. For block walls interior insulation must meet or exceed r 7 8 and exterior insulation must be r 6. Achieving greater r values in attics the higher the r value the better the thermal performance of the insulation. Framed wall insulation must meet or exceed r 13.

Climate zone 1 consists of the following south florida counties. Openings for ventilation having a least dimension of 1 16 inch 1 6 mm minimum and 1 4 inch 6 4 mm maximum shall be permitted. Inspecting your attic insulation. Meet minimum r values given in table 402 1 1 frame walls r 13 block walls interior insulation r 7 8 exterior insulation r 6 ceilings.

Add insulation to attic. Your attic should have a certain amount of insulation in it and the recommended level of insulation for your attic is dependent on where you live. 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. Maximum 20 of conditioned floor area.

First things first you need to go up into your attic inspect the condition of the insulation and calculate the current level of insulation. Recommended insulation levels for retrofitting existing wood framed buildings. 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. The florida building code identifies two distinct climate zones.

Performance compliance walls ceilings floors. Residential requirements for insulation are divided by the location in the home. Existing 3 4 inches of insulation. Prescriptive compliance form 405.

All other florida counties are considered to be in climate zone 2 and require a minimum r 38. 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. Broward collier hendry lee miami dade monroe and palm beach and require a minimum r 30 attic insulation. Exterior openings into the attic space of any building intended for human occupancy shall be protected to prevent the entry of birds squirrels rodents snakes and other similar creatures.

Insulation requirements in florida. Raised r 13 sog r 0 windows. Most insulation you buy will have a sq ft number for easy reference. Here s what you need to know about insulation requirements in florida.