For a very good introductory overview article on r value see r values over at the website of.
Minimum roof insulation r value florida.
You should of course see the manufacturer provided technical data sheet for the r value of specific products.
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.
For block walls interior insulation must meet or exceed r 7 8 and exterior insulation must be r 6.
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.
Must be inside conditioned space.
Know exactly how much you need with our project calculators.
R value measures how well certain building insulation materials can resist heat.
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.
The effectiveness of an insulated wall or ceiling also depends on how and where the insulation is installed.
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.
Maximum 20 of conditioned floor area.
When determining how much insulation you need don t guesstimate calculate.
Foam in place insulation can be injected into walls to reduce air leakage and improve r value.
Minimum r value non residential above roof deck 19727 57th avenue east puyallup wa 98387 web.
State applicable energy ashrae.
Certain conditions may exist in the home such as cathedral ceilings that may limit the ability to meet these r values.
All other florida counties are considered to be in climate zone 2 and require a minimum r 38.
Add insulation to attic.
Framed wall insulation must meet or exceed r 13.
R value of various materials.
Ceiling insulation must be much higher at r 30 and a raised floor must be at least r 13.
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.
Minimum insulation r value requirements non residential above roof deck.
Here s a handy r value table that covers most types of roof coverings building insulation and a few other materials.
Energy star s map of recommended home insulation shows that the majority of florida is within zone 2.
The higher the r value the greater the insulation performance.
Raised r 13 sog r 0 windows.
2012 iecc 4 r 25 state only fl florida 2014 florida building code energy conservation 1 r 20.
