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.
Florida attic insulation code.
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.
Achieving greater r values in attics the higher the r value the better the thermal performance of the insulation.
Maximum 20 of conditioned floor area.
Homes should have between r 22 and r 49 insulation in the attic.
Where combustion air is obtained from an attic area it shall be in accordance with chapter 7 of the florida building code mechanical.
Recommended insulation levels for retrofitting existing wood framed buildings.
Add insulation to attic.
Insulation in your walls floors and ceilings helps to keep your home cool in the summer and warm in the winter.
Today we ll go over insulation for your attic and why it s essential to your florida home.
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.
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.
To find out if you have enough attic insulation measure the thickness of the insulation.
Section r806 4 local codes based on irc 2012.
Existing 3 4 inches of insulation.
1203 3 unvented attic and unvented enclosed rafter assemblies.
Broward collier hendry lee miami dade monroe and palm beach and require a minimum r 30 attic insulation.
Climate zone 1 consists of the following south florida counties.
Raised r 13 sog r 0 windows.
There are different insulation requirements and recommendations for different parts of your home.
Typically current best home building practices indicate an r 30 to r 38 for attic insulation.
Most insulation you buy will have a sq ft number for easy reference.
When designing and building an unvented attic using spray foam insulation you need to take into account code related to.
Framed wall insulation must meet or exceed r 13.
Adding insulation to the attic is relatively easy and very cost effective.
Section r316 building thermal envelope code local codes.
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.
Unvented attic code local codes based on irc 2009.
Section r316 local codes based on irc 2012.
Section r806 5 spray foam code local codes based on irc 2009.
Interior insulation r 7 8 exterior insulation r 6 ceilings.
