Indiana Insulation Attic R Value

It is recommended that most homes in indiana have between r 49 and r 60 of insulation depending on the insulation material.

Indiana insulation attic r value.

R 5 shall be added to the required slab edge r values for heated slabs. Of attic or roof insulation in regions where the u s. Add insulation to attic. 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.

If your home is in a warmer climate you require an r 38 or higher or about 12 more. 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. The higher the r value the better the insulation s ability to resist heat flow. Department of energy recommends 16 in.

The higher the r value the better the thermal performance of the insulation. Your home s age if your home is more than 10 year old you likely need more insulation. A thermal moisture and radiant barrier. What r value do i need.

You can achieve better thermal performance in your attic by adding an additional layer of insulation. Achieving greater r values in exterior walls. The second r value for mass walls applies when more than half the insulation is on the interior of the mass wall. 13 5 means r 13 cavity insulation plus r 5 insulated sheathing.

The first r value applies to continuous insulation the second to framing cavity insulation. As a benchmark one inch of solid wood has an r value of 1. 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. Either insulation meets the requirement.

You will need a higher r value of insulation if you live in the northeast than if you live in southern california. Foam insulation has a solution for this wild frontier. Existing 3 4 inches of insulation. There are many ways to retrofit a home with fiberglass and.

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. R values for walls represent the sum of cavity insulation plus insulated sheathing if any. Insulation levels and thermal performance are measured by 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.

Recommended insulation levels for retrofitting existing wood framed buildings. Many homes have as little as 9 in.