Florida Attic Insulation Code

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

Florida attic insulation code. Framed wall insulation must meet or exceed r 13. 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. Interior insulation r 7 8 exterior insulation r 6 ceilings. When designing and building an unvented attic using spray foam insulation you need to take into account code related to.

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. Section r316 local codes based on irc 2012. Residential requirements for insulation are divided by the location in the home. Climate zone 1 consists of the following south florida counties.

Where combustion air is obtained from an attic area it shall be in accordance with chapter 7 of the florida building code mechanical. Section r806 4 local codes based on irc 2012. But the story doesn t end there. Ceiling insulation must be much higher at r 30 and a raised floor must be at least r 13.

Insulation in your walls floors and ceilings helps to keep your home cool in the summer and warm in the winter. Section r806 5 spray foam code local codes based on irc 2009. Section r316 building thermal envelope code local codes. Maximum 20 of conditioned floor area.

Adding insulation to the attic is relatively easy and very cost effective. Recommended insulation levels for retrofitting existing wood framed buildings. For block walls interior insulation must meet or exceed r 7 8 and exterior insulation must be r 6. Existing 3 4 inches of insulation.

Must be inside conditioned space tested to q n 0 03 by a class 1 bers rater or class a b or mechanical contractor hvac controls. Broward collier hendry lee miami dade monroe and palm beach and require a minimum r 30 attic insulation. Today we ll go over insulation for your attic and why it s essential to your florida home. Achieving greater r values in attics the higher the r value the better the thermal performance of the insulation.

The florida building code identifies two distinct climate zones. 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. Homes should have between r 22 and r 49 insulation in the attic. Unvented attic code local codes based on irc 2009.

Add insulation to attic. There are different insulation requirements and recommendations for different parts of your home. Most insulation you buy will have a sq ft number for easy reference.