R value of various materials.
Minimum roof insulation r value florida.
Maximum 20 of conditioned floor area.
2012 iecc 4 r 25 state only fl florida 2014 florida building code energy conservation 1 r 20.
Add insulation to attic.
The higher the r value the greater the insulation performance.
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.
You should of course see the manufacturer provided technical data sheet for the r value of specific products.
Certain conditions may exist in the home such as cathedral ceilings that may limit the ability to meet these r values.
Existing 3 4 inches of insulation.
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.
Foam in place insulation can be injected into walls to reduce air leakage and improve r value.
Minimum insulation r value requirements non residential above roof deck.
All other florida counties are considered to be in climate zone 2 and require a minimum r 38.
Must be inside conditioned space.
State applicable energy ashrae.
For block walls interior insulation must meet or exceed r 7 8 and exterior insulation must be r 6.
Minimum r value non residential above roof deck 19727 57th avenue east puyallup wa 98387 web.
For a very good introductory overview article on r value see r values over at the website of.
Raised r 13 sog r 0 windows.
R value measures how well certain building insulation materials can resist heat.
Know exactly how much you need with our project calculators.
When determining how much insulation you need don t guesstimate calculate.
Recommended insulation levels for retrofitting existing wood framed buildings.
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.
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.
Different materials respond to weather conditions differently.
Typical recommendations for exterior walls are r 13 to r 23 while r 30 r 38 and r 49 are common for ceilings and attic spaces.
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.
Energy star s map of recommended home insulation shows that the majority of florida is within zone 2.
