Attic Insulation Requirements Michigan

Resistance to the movement in temperature through walls ceilings and floors in your home or commercial building.

Attic insulation requirements michigan.

The higher the r value the better the thermal performance of the insulation. Michigan building code michigan residential code michigan energy code michigan electrical code michigan rehabilitation code for existing buildings michigan mechanical code and michigan plumbing code. Michigan wisconsin and minnesota will have higher building code insulation requirements than let s say tennessee. On july 27 1985 the state adopted ansi ashrae ies standard 90a 1980 statewide.

R value is a measure of insulation s ability to resist heat traveling through it. Inspecting your attic insulation. Insulation shall be blown into the spaces between the ceiling floor joists. Attic cellulose insulation cellulose insulation is recommended for the attic ceiling floor joists.

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. Insulation is generically thought of as a material that keeps things warm but insulation like foam can also help to keep a home cool. As of that date the state adopted ashrae ies standard 90 1975 statewide. Sb 719 signed in early january 1996 repealed the 1995 adoption of the 1993 mec.

Pa302 1 ceilings with attic spaces n1102 2 1 r402 2 1. However there is an exception. Achieving greater r values in attics the higher the r value the better the thermal performance of the insulation. Insulation r value requirements for michigan what is r value.

Insulation level are specified by r value. The 2015 irc requires r 49 insulation for ceilings with attic spaces. R 408 31063a specific insulation requirements prescriptive. Prior to june 22 1977 the state of michigan had no building energy efficiency requirements.

As mentioned please check your local codes and requirements before attempting anything on your own or simply call terminix for a free insulation inspection. R 38 shall be deemed to satisfy the requirement for r 49 wherever the full height of uncompressed r 38 insulation extends over the wall top plate at the eaves. Baffles must be provided between the roof rafters at the juncture with the ceiling floor joists to ensure free air movement from the eaves to the roof ridge and vents. 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.

First things first you need to go up into your attic inspect the condition of the insulation and calculate the current level of insulation. Rule 1063a section r402 2 12 of the code is amended to read as follows. The table below shows what levels of insulation are cost effective for different climates and locations in the home. The r in r value stands for resistance.