Attic Insulation Florida Code

Section r316 local codes based on irc 2012.

Attic insulation florida code. Section r316 building thermal envelope code local codes. Insulation requirements in florida. Unvented attic code local codes based on irc 2009. Typically current best home building practices indicate an r 30 to r 38 for attic insulation.

It provides the option of testing with a blower door to demonstrate that air leakage is less than 7 ach or that tightness be considered acceptable when items. Section r806 4 local codes based on irc 2012. Add insulation to attic. Existing 3 4 inches of insulation.

Section r806 5 spray foam code local codes based on irc 2009. 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. In climate zones 5 6 7 and 8 of table r301 1 of the florida building code energy conservation any air impermeable insulation shall be a class ii vapor retarder or shall have a class iii vapor retarder coating or covering in direct contact with the underside of the insulation. 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. All florida insulation proper insulation levels for attic insulation in orlando maitland lake mary longwood gotha call 407 410 3626 for a free quote. 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. Recommended insulation levels for retrofitting existing wood framed buildings.

Most insulation you buy will have a sq ft number for easy reference. 50 pa in accordance with section r402 4 1 2 of the florida building code energy conservation residential provisions the dwelling unit shall be ventilated by mechanical means in accordance with section 403 of the florida building code mechanical. Section 402 4 2 of the code requires building air tightness and insulation installation to be demonstrated as compliant with the code. When designing and building an unvented attic using spray foam insulation you need to take into account code related to.

Here s what you need to know about insulation requirements in florida. The florida building code identifies two distinct climate zones. Broward collier hendry lee miami dade monroe and palm beach and require a minimum r 30 attic insulation. Where the air infiltration rate in a dwelling unit is less than 3 air changes per hour when tested with a blower door at a pressure 0 2 inch w c.