There are different insulation requirements and recommendations for different parts of your home.
Florida attic insulation code.
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.
Residential requirements for insulation are divided by the location in the home.
Climate zone 1 consists of the following south florida counties.
Section r806 4 local codes based on irc 2012.
Section r806 5 spray foam code local codes based on irc 2009.
Unvented attic code local codes based on irc 2009.
Existing 3 4 inches of insulation.
When designing and building an unvented attic using spray foam insulation you need to take into account code related to.
Typically current best home building practices indicate an r 30 to r 38 for attic insulation.
Add insulation to attic.
Section r316 local codes based on irc 2012.
Broward collier hendry lee miami dade monroe and palm beach and require a minimum r 30 attic insulation.
Section r316 building thermal envelope code local codes.
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.
Interior insulation r 7 8 exterior insulation r 6 ceilings.
Maximum 20 of conditioned floor area.
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.
Achieving greater r values in attics the higher the r value the better the thermal performance of the insulation.
Recommended insulation levels for retrofitting existing wood framed buildings.
To find out if you have enough attic insulation measure the thickness of the insulation.
Today we ll go over insulation for your attic and why it s essential to your florida home.
Framed wall insulation must meet or exceed r 13.
Most insulation you buy will have a sq ft number for easy reference.
For block walls interior insulation must meet or exceed r 7 8 and exterior insulation must be r 6.
Adding insulation to the attic is relatively easy and very cost effective.
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.
Ceiling insulation must be much higher at r 30 and a raised floor must be at least r 13.
Raised r 13 sog r 0 windows.
Where combustion air is obtained from an attic area it shall be in accordance with chapter 7 of the florida building code mechanical.
Homes should have between r 22 and r 49 insulation in the attic.
But the story doesn t end there.
