Indiana Insulation Attic R Value

Add insulation to attic.

Indiana insulation attic r value.

The insulation for basement walls must be from the top of the wall down 10 feet below grade or to the basement floor whichever is less. There are many ways to retrofit a home with fiberglass and. As a benchmark one inch of solid wood has an r value of 1. Where you live different climates require different insulation r values.

The higher the r value the better the thermal performance of the insulation. Attic insulation for homes that are situated in cold climates homeowners need to ensure that they have a minimum of r 49 in their attics this is equivalent to about 16 inches of fibreglass insulation. Your home s age if your home is more than 10 year old you likely need more insulation. It is recommended that most homes in indiana have between r 49 and r 60 of insulation depending on the insulation material.

The first r value applies to continuous insulation the second to framing cavity insulation. A thermal moisture and radiant barrier. What r value do i need. 13 5 means r 13 cavity insulation plus r 5 insulated sheathing.

The second r value for mass walls applies when more than half the insulation is on the interior of the mass wall. If your home is in a warmer climate you require an r 38 or higher or about 12 more. R values for walls represent the sum of cavity insulation plus insulated sheathing if any. The higher the r value the better the insulation s ability to resist heat flow.

Department of energy recommends 16 in. Foam insulation has a solution for this wild frontier. Or insulation sufficient to fill the framing cavity r 19 minimum. Install foam insulation for a closed attic system and you stop the extreme temperatures never allowing the air to invade the space keeping it conditioned to the home s temperature.

You will need a higher r value of insulation if you live in the northeast than if you live in southern california. In comparison an inch of blown fiberglass insulation has an r value of 3 1 3 4 and an inch of blown cellulose in an attic has an r value of 3 2 3 7 along with knowing the r value of a particular insulation it is also important to calculate the r value of a total system. Achieving greater r values in exterior walls. Existing 3 4 inches of insulation.

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 can achieve better thermal performance in your attic by adding an additional layer of insulation. Recommended insulation levels for retrofitting existing wood framed buildings. R 5 shall be added to the required slab edge r values for heated slabs.

Insulation levels and thermal performance are measured by r value. Either insulation meets the requirement.