Florida Attic Insulation R Value

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.

Florida attic insulation r value.

R value is a measure of insulation s ability to resist heat traveling through it. Solid wood has an r value of 1. For block walls interior insulation must meet or exceed r 7 8 and exterior insulation must be r 6. Let s start at a base point.

Each state does have their own minimum insulation requirements which are often lower than the levels recommended by the department of energy. Blown fiberglass installed in the attic has an r value of 2 2 per inch so 12 inches of it would give you an r value of 26 4 in your attic installation project. Walls are entered by the type of assembly and the r value of insulation. The table below shows what levels of insulation are cost effective for different climates and.

The transfer of heat by contact with solid objects such as the ceiling walls or floor is called conduction see figure 1. Your home s age if your home is more than 10 year old you likely need more insulation. The higher the r value the better it insulates. Recommended home insulation r values.

Most computer programs allow the user to calculate gross wall areas and subtract window and door areas. Ceiling insulation must be much higher at r 30 and a raised floor must be at least r 13. R value is how well insulation can resist heat flow. The higher the r value the better the thermal performance of the insulation.

Insulation levels are measured by r value. Insulation is measured in r values the higher the r value the better your walls and roof will resist the transfer of heat. All r values are insulation only tested labeled per ftc rule16 cfr 460. First check the insulation in your attic ceilings exterior and basement walls floors and crawl spaces to see if it meets the levels recommended for your area.

R values of framing members concrete blocks gypsum board etc. The r value your home s attic needs depends on where you live. Insulating power or r value is only one factor to consider when building or improving a home to keep it comfortable. An r value is also calculated per inch of width.

The higher the r value the better the thermal performance of the insulation. Insulation level are specified by r value. There are many ways to retrofit a home with fiberglass and. Achieving greater r values in exterior walls.

You will need a higher r value of insulation if you live in the northeast than if you live in southern california. Where you live different climates require different insulation r values. You can achieve better thermal performance in your attic by adding an additional layer of insulation. Therefore a three inch thick board has an r value of 3.