Wisconsin building codes for roof replacement
Wisconsin has no mandatory statewide residential code. What applies depends on the jurisdiction that issues the permit.
The latest edition of the Wisconsin state building code is based on the 2021 IBC. Wisconsin mandates a unique statewide residential code, called the Uniform Dwelling Code (UDC), which is not based on adoption of the IRC or any model code.
Counties in Wisconsin
County pages for Wisconsin are not published yet. The adoption data above covers the whole state.
Adoption data: FEMA Building Code Adoption Tracking (BCAT).