How many commercial roofing contractors are in Madison?
Our directory lists 8 independently verified commercial roofing contractors serving Madison, Wisconsin, ranked by experience, certifications and reputation. Larson & Keeney Home Services is ranked #1.
How do I choose a commercial roofer in Madison?
Confirm licensing and insurance for Wisconsin, ask for commercial project references in Madison, get multiple written quotes, and check each contractor's BBB standing. Every company listed here has been independently researched.
Does Madison require a commercial roofing permit and inspection?
Yes. The City of Madison's Building Inspection Division requires a building permit for commercial roof replacements. Wisconsin-licensed commercial roofing contractors must carry Department of Safety and Professional Services (DSPS) contractor registration. Madison has adopted the IBC/IECC 2021, meaning energy code compliance (R-30 insulation) is inspected as part of the permit process. Projects on UW-Madison campus involve the State of Wisconsin Division of Facilities Development — a separate permitting track from City of Madison.
What is the correct R-value for a new commercial roof in Madison, Wisconsin?
Madison falls in IECC Climate Zone 6A. Wisconsin's adopted energy code requires R-30 continuous insulation for commercial roofs. This is typically achieved with 5–6 inches of polyisocyanurate (ISO) insulation board. Note that ISO insulation's labeled R-value (typically R-6 per inch at room temperature) is derated to approximately R-5 per inch at cold-weather design temperatures — specify the long-term thermal resistance (LTTR) value for Wisconsin design conditions to ensure code compliance at actual service temperatures.
Is a roof recover (overlay) option available for Madison commercial buildings?
Yes, where the existing roof deck is structurally sound and the existing membrane is dry. Wisconsin's adopted IBC permits one re-cover before requiring a full tear-off. A roof core sample or infrared thermal scan before specifying a recover determines whether the existing insulation is dry enough to build over — wet insulation under a new membrane will continue to degrade and cause the new system to fail prematurely. Dane County's freeze-thaw cycling makes wet-insulation discovery common in buildings older than 20 years.