Wisconsin Attic Insulation Requirements

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Wisconsin attic insulation requirements.

Here in northern wisconsin good attic ventilation is essential to keeping your home healthy and protected. If you think you re among the 90 of us homes that are under insulated 1 performing a simple insulation inspection will help you determine your insulation needs. Having the correct amount of attic insulation can help you maintain a comfortable temperature throughout your home and help save money on your energy bills plus prevent major issues like ice dams in the winter. The higher the r value the better the thermal performance of the insulation.

Learn how to achieve good attic ventilation. This reduction of insulation shall be limited to 500 square feet of ceiling area. Sps 322 39 apply to any dwelling with insulation installed whether or not the insulation is required under this code. Where the design of the roof or ceiling assembly does not allow sufficient space for the required r 49 insulation the minimum required insulation for the roof or ceiling assembly shall be r 30.

R value is a measure of insulation s ability to resist heat traveling through it. Achieving greater r values in attics the higher the r value the better the thermal performance of the insulation. Insulation requirements for slab on grade floors are further. Sps 322 38 do not apply to an unheated space such as an attached unheated garage.

Outline of 2018 iecc requirements for wisconsin homes. 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. Alpine insulation offers quality building and insulation services in wisconsin. Insulation level are specified by r value.

Sps 322 32 2 2 ceilings without attic spaces. Attic insulation requirements according to energy star an epa program which has helped americans save 362 billion in utility bills since 1992 an uninsulated wisconsin attic requires a minimum of 16 inches of fiberglass insulation to be considered cost effective. No energy cost savings for wisconsin resulting from the state updating its commercial and residential building energy codes in accordance with federal law are significant estimated to be on the order of nearly 170 million annually by 2030. The table below shows what levels of insulation are cost effective for different climates and locations in the home.

Special insulation exceptions related to ceilings with or without attic spaces masonry veneer and thermally isolated sunrooms are set forth in iecc section r402.