Minimum Roof Insulation R Value Florida

Raised r 13 sog r 0 windows.

Minimum roof insulation r value florida.

Energy star s map of recommended home insulation shows that the majority of florida is within zone 2. Ceiling insulation must be much higher at r 30 and a raised floor must be at least r 13. R value of various materials. All other florida counties are considered to be in climate zone 2 and require a minimum r 38.

Minimum r value non residential above roof deck 19727 57th avenue east puyallup wa 98387 web. The effectiveness of an insulated wall or ceiling also depends on how and where the insulation is installed. R value measures how well certain building insulation materials can resist heat. The higher the r value the greater the insulation performance.

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. For a very good introductory overview article on r value see r values over at the website of. When determining how much insulation you need don t guesstimate calculate.

Must be inside conditioned space. Different materials respond to weather conditions differently. 2012 iecc 4 r 25 state only fl florida 2014 florida building code energy conservation 1 r 20. 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.

You should of course see the manufacturer provided technical data sheet for the r value of specific products. 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. Framed wall insulation must meet or exceed 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.

Know exactly how much you need with our project calculators. 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. Add insulation to attic. Here s a handy r value table that covers most types of roof coverings building insulation and a few other materials.

Insulating power or r value is only one factor to consider when building or improving a home to keep it comfortable. Foam in place insulation can be injected into walls to reduce air leakage and improve r value. Recommended insulation levels for retrofitting existing wood framed buildings. For block walls interior insulation must meet or exceed r 7 8 and exterior insulation must be r 6.

Existing 3 4 inches of insulation.