This zone has a recommended r value of 30 to 60 for an uninsulated attic r25 to r38 for an attic with existing insulation and r13 to r19 for the floor.
Minimum roof insulation r value florida.
Certain conditions may exist in the home such as cathedral ceilings that may limit the ability to meet these r values.
Ceiling insulation must be much higher at r 30 and a raised floor must be at least r 13.
The higher the r value the greater the insulation performance.
State applicable energy ashrae.
When determining how much insulation you need don t guesstimate calculate.
For block walls interior insulation must meet or exceed r 7 8 and exterior insulation must be r 6.
R value measures how well certain building insulation materials can resist heat.
2012 iecc 4 r 25 state only fl florida 2014 florida building code energy conservation 1 r 20.
Existing 3 4 inches of insulation.
Must be inside conditioned space.
Minimum r value non residential above roof deck 19727 57th avenue east puyallup wa 98387 web.
R value of various materials.
Foam insulation r values range from r 4 to r 6 5 per inch of thickness 2 54 cm which is up to 2 times greater than most other insulating materials of the same thickness.
Add insulation to attic.
You should of course see the manufacturer provided technical data sheet for the r value of specific products.
Different materials respond to weather conditions differently.
Minimum insulation r value requirements non residential above roof deck.
Maximum 20 of conditioned floor area.
The effectiveness of an insulated wall or ceiling also depends on how and where the insulation is installed.
Here s a handy r value table that covers most types of roof coverings building insulation and a few other materials.
Depending on where you live and the part of your home you re insulating walls crawlspace attic etc you ll need a different r value.
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.
Energy star s map of recommended home insulation shows that the majority of florida is within zone 2.
Insulating power or r value is only one factor to consider when building or improving a home to keep it comfortable.
Recommended insulation levels for retrofitting existing wood framed buildings.
For a very good introductory overview article on r value see r values over at the website of.
Know exactly how much you need with our project calculators.
All other florida counties are considered to be in climate zone 2 and require a minimum r 38.
Framed wall insulation must meet or exceed r 13.
