Attic Insulation Requirements Indiana

Both can be added to uninsulated attics or layered over existing material.

Attic insulation requirements indiana.

Insulation level are specified by r value. The majority of the requirements related to attic ventilation have not changed much from the previous editions. First things first you need to go up into your attic inspect the condition of the insulation and calculate the current level of insulation. Insulation institute association provides resources and information on spray foam rockwool and fiberglass insulation insulation r values building code changes as well as instructions for homeowners and building professionals when installing insulation in attics ceilings and other interior locations.

The higher the r value the better the thermal performance of the insulation. Achieving greater r values in attics the higher the r value the better the thermal performance of the insulation. The following are the requirements taken directly from the irc. Find your zone on the map and then use the chart to determine the level of insulation you need to properly insulate your attic walls floors and crawlspaces.

The ventilation amount and opening size requirements can be found in section 806 roof ventilation of chapter 8 roof ceiling construction. Inspecting your attic insulation. Special insulation exceptions related to ceilings with attic spaces ceilings without attic spaces masonry veneer and. Now that you ve air sealed your attic and basement check your attic insulation levels and add more if necessary.

The table below shows what levels of insulation are cost effective for different climates and locations in the home. In other words the desired inside temperature remains and the undesirable outside temperature stays well outside. 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. R 5 shall be added to the required slab edge r values for heated slabs.

Your attic should have a certain amount of insulation in it and the recommended level of insulation for your attic is dependent on where you live. The attic is the easiest place to add insulation to improve your comfort and the energy efficiency of your home. Insulation requirements for slab on grade floors are further specified in iecc section r402 2 9. For diy attic insulation you ve got two choices.

N1101 4 1 blown or sprayed roof ceiling insulation. The thickness of blown in or sprayed roof ceiling insulation fiberglass or cellulose shall be written in inches mm on markers that are installed at least one for every 300 ft 2 28m 2 throughout the attic space the markers shall be affixed to the trusses or joists and marked with the minimum initial installed thickness with numbers a.