Windows, Siding & Insulation

Congress Glass, Inc.

Window or siding contractor in Janesville, Wisconsin

Map Listing: License Not CheckedData Downloaded November 6, 2026

Congress Glass, Inc. is a window or siding contractor on OpenStreetMap in Janesville, Wisconsin. We have not checked a license for this business. Wisconsin regulates home improvement or residential work, but has no full general contractor license, so ask for the license or registration number and check it with the state or your local building department.

Contact

Trades
Windows, Siding & Insulation
Address
909 North Parker Drive, Janesville, WI 53545
Phone
(608) 752-7888
Website
congressglass.com
Hours
Mo-Fr 08:00-17:00, Sa-Su closed
As mapped; call first.

Congress Glass, Inc., located in Janesville, Wisconsin, stands as the premier window repair expert for Rock, Walworth, and Green counties. Our expertise spans a broad range of services including the installation and repair of shower doors, remediation of

Location

Map © OpenStreetMap contributors.

Before You Hire

Typical lead time is several weeks, due to custom order lead times. Ask:

  • What is your license number, and which state or city issued it?
  • Can you send a current certificate of liability insurance and proof of workers’ compensation?
  • Will the contract list the scope, materials, price, start and finish dates and payment schedule?
  • Who pulls the permits, and are they included in the price?
  • Who will run the job day to day, and will you use subcontractors?

All 8 questions to ask →

Wisconsin Rules

Wisconsin regulates home improvement or residential work, but has no full general contractor license. Threshold: Based on permits and scope for one- and two-family homes. Read the Wisconsin license summary.

  • Be wary of limited-time discounts that require signing today.
  • Federal cooling-off rules may cover some in-home sales; ask for the cancellation form.

Wrong or out of date? Anyone can fix this on OpenStreetMap; we pick up changes at the next refresh, or tell us. A listing is not an endorsement.

More Windows, Siding & Insulation in Janesville

824 South Fremont Street, Janesville

Map listing: license not checkedWindows, Siding & Insulation

Sources: Washington L&I, Oregon CCB and New York DOL open data; © OpenStreetMap contributors (ODbL) · Data last updated November 6, 2026 · Sources & method