Wisconsin Attic Insulation Requirements

The ideal attic insulation r value is different than the ideal wall insulation r value.

Wisconsin attic insulation requirements.

The higher the r value the better the thermal performance of the insulation. 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. Insulation ratings can be improved by adding more layers of insulation.

Achieving greater r values in attics. Subchapter iv dwelling thermal envelope sps 322 30 general design requirements. For example if you install r 19 fiberglass batts in 2x6 frame walls with the studs 16 inches on center double top plates and other elements of standard framing the actual r value of the whole wall with the r 19 insulation will be about r 15. Wisconsin home improvement can help to assess your home s wall insulation and recommend next steps for an efficient home.

R value is a measure of insulation s ability to resist heat traveling through it. 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. Insulation level are specified by r value. Alpine insulation offers quality building and insulation services in wisconsin.

Sps 322 33 slab floors. Sps 322 21 protection of insulation. Make sure your home is properly insulated in all these locations. Subchapter iii insulation materials and installation sps 322 20 basic requirements.

Sps 322 31 prescriptive insulation and fenestration criteria. You can mix the type and material of insulation too. High performance wall insulation improves comfort in addition to the benefit of improved energy efficiency and money savings a good layer of insulation in the walls of your home can help make it feel cozy and comfortable. 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.

This reduction of insulation shall be limited to 500 square feet of ceiling area. Insulation requirements for slab on grade floors are further. Sps 322 32 2 2 ceilings without attic spaces. Special insulation exceptions related to ceilings with or without attic spaces masonry veneer and thermally isolated sunrooms are set forth in iecc section r402.

Sps 322 32 specific insulation requirements. Call us at 866 261 1090 or contact us online to learn more. 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.