Wisconsin Attic Insulation Requirements

2 ceilings without attic spaces.

Wisconsin attic insulation requirements.

Here in the sheboygan county area and throughout central and southern wisconsin we are in zone 6. You should select a loose fill r 49 insulation product. Inspecting your attic insulation. Sps 322 01 3 b b the vapor retarder requirements under s.

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. 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. What areas of my home need insulation. First things first you need to go up into your attic inspect the condition of the insulation and calculate the current level of insulation.

Achieving greater r values in attics the higher the r value the better the thermal performance of the insulation. 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. Recommended r values in this region range from r5 up to r60 depending on the area being insulated.

Sps 322 32 1 a a r 38 will satisfy the ceiling r value requirement for a dwelling. Recommended insulation levels for retrofitting existing wood framed buildings. The requirements of table 322 31 1. 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.

Add insulation to attic. Sps 322 38 do not apply to an unheated space such as an attached unheated garage. Outline of 2018 iecc requirements for wisconsin homes. Insulation requirements for slab on grade floors are further.

That s why different regions of the united states have different recommended insulation levels. Special insulation exceptions related to ceilings with or without attic spaces masonry veneer and thermally isolated sunrooms are set forth in iecc section r402. 1 ceilings with attic spaces. Existing 3 4 inches of insulation.

These recommendations are for true r values not the nominal values listed on insulation packaging.