Wisconsin code
What WI requires (SPS 321.28)
- Ice-and-water shield required on shingle or shake roofs over heated rooms when the slope is 4:12 or shallower
- The shield must run at least 30 inches up from the roof edge
- And must reach at least 12 inches past the inside of your exterior wall
- Permit pulls through Janesville Building & Development Services. State-licensed Dwelling Contractor required