Minimum Roof Insulation R Value Florida

You should of course see the manufacturer provided technical data sheet for the r value of specific products.

Minimum roof insulation r value florida. Foam in place insulation can be injected into walls to reduce air leakage and improve r value. Framed wall insulation must meet or exceed r 13. R value of various materials. Maximum 20 of conditioned floor area.

The higher the r value the greater the insulation performance. All other florida counties are considered to be in climate zone 2 and require a minimum r 38. Recommended insulation levels for retrofitting existing wood framed buildings. 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.

2012 iecc 4 r 25 state only fl florida 2014 florida building code energy conservation 1 r 20. 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. Here s a handy r value table that covers most types of roof coverings building insulation and a few other materials.

When determining how much insulation you need don t guesstimate calculate. 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. Different materials respond to weather conditions differently. Minimum insulation r value requirements non residential above roof deck.

R value measures how well certain building insulation materials can resist heat. Ceiling insulation must be much higher at r 30 and a raised floor must be at least r 13. Certain conditions may exist in the home such as cathedral ceilings that may limit the ability to meet these r values. The effectiveness of an insulated wall or ceiling also depends on how and where the insulation is installed.

Existing 3 4 inches of insulation. Know exactly how much you need with our project calculators. State applicable energy ashrae. Add insulation to attic.

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. 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. Insulating power or r value is only one factor to consider when building or improving a home to keep it comfortable.

Minimum r value non residential above roof deck 19727 57th avenue east puyallup wa 98387 web.