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Our Service Areas

Proudly Serving Dane County & Southern Wisconsin

Get Exceptional Service From a Locally Owned & Operated Company

Ganser Company has been providing exceptional home improvement services for over 80 years. If it’s your home exterior that needs attention, our family-owned, locally owned and operated company offers installation of windows, doors, skylights, roofing, gutters, siding, insulation and many related services. For the interior of your home, we offer full bathroom remodeling.

We are proud to serve our neighbors in the following Wisconsin counties:

Contact us today at (608) 222-1243 or reach us online to discuss your project and schedule a free quote!

Local Reviews

Ganser Company Inc. Rated 5.0 out of 5 stars based on 17 customer reviews

Map of Wisconsin Dells, WI

Jason had great ideas!




Review of Ganser Company Inc.

We told Jason what we thought we wanted and he made it happen and more. We look forward to working with him next year on another window project! We haven’t had the windows installed yet.


Map of Madison, WI

House Updated




Review of Ganser Company Inc.

Wow, our house has been transformed by Ganser Company from top to bottom (literally)! They provided us with a new roof, gutters, downspouts, siding, windows, and sliding glass door. Plus added additional insulation in the attic to increase the R value. Our 1983 house has been updated for the 21st century and looks brand new! Our neighbors all love how it looks as much as we do. We are so proud every time we pull into our driveway.


Map of Fitchburg, WI

Entire Bathroom Remodel




Review of Ganser Company Inc.

This project was the complete remodeling of a bathroom-from-hell.I was very satisfied with the quality of the work and the punctuality, work ethic, friendliness, and respectfulness of Mark, David and David. Work included tearing down walls and remodeling of a tiny, poorly laid out bathroom, including re-piping, new electrical outlets, shower drain relocation in foundation, installation of lovely shower unit, toilet, and vanity, drywalling and priming. Result was a much expanded and spacious, bright, and modern bathroom. We are very pleased.


Map of Madison, WI

Awesome service!




Review of Ganser Company Inc.

They were super professional, quick, and the bathroom install was well executed!


Map of Belleville, WI

Great product, work and service!




Review of Ganser Company Inc.

In the past 15 months we have used Ganser for three major home improvement projects; attic insulation, new roof, and new siding. We are very pleased and satisfied with their work. All the people have been very professional, hardworking, and respectful. Also we have been very impressed with their attention to customer service. We felt like they took the worry out of the projects. In addition, we really like their warranties. In summary, we are very happy with their work on all the projects.


Map of Madison, WI

Denise G




Review of Ganser Company Inc.

We couldn’t be happier. Had a new patio door installed. Great experience from beginning to end. Prompt quote, continuous schedule updates, installers were amazing. And the work they did is just beautiful. We’ve done four projects with Ganzer and have been happy every time!


Map of Sun Prairie, WI

New insert windows by Infinity




Review of Ganser Company Inc.

Jason the salesperson was very professional. He explained my options well. Pricing was competitive. Wasn’t the least expensive or the highest price of our 3 proposals. We choose Ganser Co. because of the history of the company. Work crews were courteous and professional. Ganser Co. has a very good workmanship warranty. And the Infinity windows has an excellent warranty. So if you want a high quality window at a great price, GANSER THATS THE ANSWER!


Map of Jefferson, WI

Service




Review of Ganser Company Inc.

We do think Marc did a great inspection of our roof concerns and construction of our home. See you again THANKS Glenn and Shirley


Map of Madison, WI

Window replacement




Review of Ganser Company Inc.

We met with Jason Hawkins from Ganser and Company several months ago about getting our windows replaced we went through the process all the while he answer what questions we needed and looked at the things that we wanted most and helped us find a solution for the problem the installation went off without a hitch and can’t say enough about the install team or Jason we absolutely love our windows and would recommend Ganser Company in the future


Map of Jackson, WI

Bathroom remodel




Review of Ganser Company Inc.

Jason was wonderful to work with for upcoming bath remodel. Explained everything to us and made us feel confident with the decisions we made.


Kevin M.

Kevin M.

Window replacement

Near Dynes Way, Sun Prairie, WI 53590
Sun Prairie, WI - Window replacement
Kevin M.

Kevin M.

Replacement windows

Near Chadbourne Ave, Madison, WI 53726
Madison, WI - Replacement windows
John B.

John B.

Window and screen door replacement

Near Grant St, Waunakee, WI 53597
Waunakee, WI - Window and screen door replacement
Jason H.

Jason H.

Siding proposal

Near Hillcrest Dr, Sun Prairie, WI 53590
Sun Prairie, WI - Siding proposal
Jason H.

Jason H.

Roofing final walk through

Near Sunhill Dr, Madison, WI 53718
Madison, WI - Roofing final walk through
Kevin M.

Kevin M.

Window replacement

Near Birch Ave, Madison, WI 53711
Madison, WI - Window replacement
Jason H.

Jason H.

Siding proposal

Near Echo Valley Rd, Brooklyn, WI 53521
Kevin M.

Kevin M.

Window replacement

Near Hillside Ct, Evansville, WI 53536
Evansville, WI - Window replacement
Bob D.

Bob D.

No answer - left voicemail on customer cell phone.

Near Rusk St, Madison, WI 53704
Jason H.

Jason H.

New window

Near Kendall Avenue, Madison, WI 53726
Madison, WI - New window