City Hall, 100 N. Jefferson Street, Room 608, Green Bay, WI 54301
Phone: (920) 448-3300 (8 AM–4 PM)
Website: greenbaywi.gov/permits →
Green Bay roof replacement rules — the cold climate context
Roofing permits in Green Bay are obtained at City Hall, 100 N. Jefferson Street, Room 608. Phone: (920) 448-3300. Long project permit application required. Wisconsin SPS codes + Green Bay local ordinances govern. Wisconsin DSPS Dwelling Contractor Certification AND Qualifier Certification required for contractor work. The deck inspection after tear-off is the critical checkpoint before new roofing is applied.
Green Bay's Climate Zone 6 creates specific roofing requirements. Ice-and-water shield is required at eaves for Green Bay: Wisconsin's cold winters create ice dam conditions where meltwater from warm roofing (heated by attic heat loss) refreezes at cold eave edges and backs up under shingles. The self-adhering eave membrane prevents water infiltration. This is a genuine performance requirement in Green Bay, unlike southern markets where ice shield is optional or not required.
Snow load is a structural consideration for Green Bay roofing. Northeast Wisconsin's ~45 inches of annual snowfall, plus potential for heavy wet snow events, creates meaningful roof snow loads. Wisconsin SPS structural provisions address snow loads applicable to the Green Bay area. The roofing contractor must use fastening patterns appropriate for the wind loads applicable to Green Bay.
Class 4 impact-resistant shingles are less of a priority in Green Bay than in the DFW or Kansas hail belts — Green Bay's Lake Michigan location moderates the hailstorm frequency somewhat. Focus is instead on wind resistance and ice dam protection.
| Variable | How it affects your Green Bay roof permit |
|---|---|
| Ice-and-water shield required | Green Bay Climate Zone 6: ice-and-water shield at eaves required by Wisconsin SPS codes. Self-adhering membrane prevents ice dam water infiltration. Critical performance requirement, not optional. |
| Snow load structural design | Northeast Wisconsin snow loads: ~45 inches annual snowfall. Wisconsin SPS structural provisions govern. Fastening patterns and deck structural requirements address snow load. |
| Attic ventilation for ice dam prevention | Proper balanced attic ventilation (1/150 of attic floor area) is the primary long-term ice dam prevention strategy in Green Bay. Inadequate attic ventilation allows heat loss that creates ice dams. |
| Wisconsin DSPS Dwelling Contractor Certification | Both certifications required for contractor roofing work. Owner-occupants of primary single-family residences may do own roofing with permit. |
| Deck inspection after tear-off | Building inspector reviews deck condition after tear-off before new roofing applied. Green Bay's freeze-thaw cycling and ice dam history can damage roof decking. |
What roof replacement costs in Green Bay
Architectural shingle (1,800 sq ft): $9,000–$17,000. Metal roofing: $15,000–$28,000. Contact (920) 448-3300 for permit fee.
Common questions about Green Bay WI roof replacement permits
How do I apply for a roofing permit in Green Bay?
Long project permit application submitted in-person at City Hall, 100 N. Jefferson Street, Room 608. Phone: (920) 448-3300. Wisconsin DSPS Dwelling Contractor Certification required or owner-occupant permit. Approximately one week processing time.
Does Green Bay require ice-and-water shield on roofs?
Yes. Wisconsin SPS codes require ice-and-water shield (self-adhering bituminous membrane) at eaves for Green Bay's Climate Zone 6. Green Bay's cold winters create ice dam conditions that drive meltwater under shingles. The eave membrane prevents this water infiltration. Verified at the deck inspection after tear-off.
What snow load provisions apply to Green Bay roofing?
Northeast Wisconsin's significant snowfall (~45 inches annually) creates meaningful roof snow loads. Wisconsin SPS codes address snow load structural design for the Green Bay area. Roofing fastening patterns and deck structural requirements address these loads. The Wisconsin DSPS-certified roofing contractor specifies appropriate fastening per Wisconsin SPS requirements.
What causes ice dams in Green Bay?
Ice dams form when heat from the heated interior of a house escapes through the attic and warms the roof surface above the eave. Snow melts on the warm upper roof and flows down to the cold eave, where it refreezes and forms an ice dam. Water backs up under shingles behind the dam. Prevention: ice-and-water shield at eaves + proper attic insulation (R-49 minimum per Wisconsin SPS 363) + balanced attic ventilation to keep the roof surface cold uniformly.
Does Wisconsin require contractor licensing for roofing?
Yes. Wisconsin requires Dwelling Contractor Certification AND Qualifier Certification from the Wisconsin DSPS for contractors performing one- and two-family residential roofing work. Verify at dsps.wi.gov or (608) 261-8500. Owner-occupants of primary single-family residences may obtain permits and personally do roofing work.
Wisconsin SPS codes — how Green Bay building codes differ from most states
Wisconsin uses the Safety and Professional Services (SPS) code system — the Wisconsin Department of Safety and Professional Services's own regulatory code framework — rather than the International Code Council (ICC) codes used by most other states. The Wisconsin Uniform Dwelling Code (UDC, encompassing SPS 320–325 for residential construction), Wisconsin Commercial Building Code (SPS 361–366), and Wisconsin Plumbing Code (SPS 382–387) are Wisconsin's own code structure with Wisconsin-specific provisions.
For homeowners and contractors, the practical implication is that Wisconsin-specific code requirements apply rather than the 2018 IRC or 2021 IRC that governs most other states in this guide. Wisconsin's energy code (SPS 363) reflects Climate Zone 6 requirements that are substantially more demanding than zones applicable to Texas, Oklahoma, or Florida. Wisconsin's contractor certification requirements (Dwelling Contractor Certification + Qualifier Certification through DSPS) are Wisconsin-specific and separate from any national contractor certification. Green Bay Building Inspection Division enforces Wisconsin SPS codes alongside local Green Bay municipal ordinances. Contact (920) 448-3300 for current code requirements applicable to your specific project.
Wisconsin Public Service (WPS) — Green Bay's dual-utility provider
Unlike most cities in this guide where electricity and natural gas are provided by separate companies, Green Bay is served by Wisconsin Public Service (WPS) for both electricity and natural gas. WPS, a subsidiary of WEC Energy Group headquartered in Green Bay, serves approximately 474,000 electric customers and 350,000 natural gas customers in northeast and central Wisconsin. The single-utility structure means Green Bay homeowners coordinate with one company for all energy service changes: panel upgrades, gas line modifications, meter disconnects, and solar interconnection all route through WPS.
WPS customer service: 800-450-7260. Electric emergency: 800-450-7240. Gas emergency: 800-450-7280. For construction-related service changes (meter disconnects for panel upgrades, gas meter changes for gas line work), coordinate with WPS alongside the City of Green Bay Building Inspection Division permit at (920) 448-3300. WPS offers net metering for solar installations; verify current net metering terms at wisconsinpublicservice.com before finalizing solar system design. WPS customers may also be eligible for Wisconsin Focus on Energy rebates for energy efficiency and renewable energy improvements.
City of Green Bay Building Inspection Division. Wisconsin DSPS certification required. Contact (920) 448-3300 for current permit fee schedule. Not engineering advice.