Ganser Company has been a locally-owned and operated family business proudly serving the Greater Dane County area for more then 75 years. Serving Madison, Monona, McFarland, Verona, Fitchburg, Middleton, Sun Prairie, and surrounding areas for all roofing, siding, window, and repair needs. Ganser Company will bring your home's original beauty back with timeless products, new innovation, and hands-on displays designed to let your imagination run wild!

There are a lot of great reasons to live in the Madison area, but pleasant, predictable weather isn’t one of them. Snow, hail, ice dams and wind can wreak havoc on your roof. We at the Ganser Company provide service and replacement for all kinds of roofs, including asphalt, metal, slate, tile, rubber, wood shake and thermoplastics. No matter what kind of roof you have on your home, Ganser has the answer.

Our steep-slope residential roofs use only the best made-in-the-USA materials and come in a variety of styles, allowing you to pick the perfect match for your house. Features include an advanced ventilation system to insulate your attic and keep it dry, as well as ice dam barriers that prevent water from backing up in cold weather. We hold a Master Elite certification from GAF, the largest shingle roof manufacturer in the United States and the most trusted name in the roofing business. This means we can offer not just a material warranty but also a 25-year workmanship warranty that few other contractors can match.

Our low-slope single-ply roofs are strong and well-protected against UV damage and heat-aging. Custom-order taper systems will prevent water from accumulating and causing costly long-term damage. If you want, we can also add ribs to improve your home’s appearance. You can further customize your roof to include railings, a deck system and custom-made flashings. Not only are our single-ply roofs made right here in America, they are also certified by Energy Star, helping to keep utility bills low and protect the environment.

Ganser Company Inc. Reviews

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susan schneck

I\'ve had Ganser perform two jobs on our home, one a roof repair and one a door replacement (exterior + screen). Both times I was super happy with the results! I worked with Mark who is absolutely wonderful. He came out before both jobs to review & quote us, was very honest with expectations, and provided great product guidance without sales pressure. He also came out again after both jobs to make sure we were satisfied! Both of the work teams who came out were excellent too. They checked in with me every time they had to make an adjustment to the plans, and did wonderful jobs. They were also super neat and cleaned up the area way more than I expected given my experience with other contractors. With the roof I can hardly tell where the repairs were, it looks amazing! The door also looks fantastic and we are super happy with it. We also had Mark out for a quote on a bathroom remodel, and although we didn\'t move forward at that time, we will absolutely be doing so in the future. His suggestions were excellent and he was able to point to personal experience with some of the finishes he recommended. I highly recommend Ganser for replacement and remodeling.

vincente venuta

Very happy with the product and the workmanship. The crew was very professional. At the end of the day the only sign that they had been there at all was the work they had done. There was no tools or trash lying around. The work was high quality. Any concerns we had, however small, were addressed promptly and without fuss. We would happily do business with them again!

Scott Mac Naughton

Marc Ganser was awesome to work with. Explained what was to be done so you could understand. The 2 gentleman who did the work were great also. Did the work efficiently and with no mess. The lead man even went to get different shingles to match my shingles even better. Will call back when we redo the bathroom. Or when a new roof is needed. Thanks to all the people that we dealt with a the Ganser Co.

Tracy Koziol

I just used Ganser for a large exterior project on our home that included many doors, windows, new roof over hangs, and exterior repairs on a four story home on a steep lot. Many other companies would not even bid the job due to its complexities. Ganser, however, did bid the job happily and was professional from day one. I appreciated all communication was upfront and clear. The project was finished in a timely manner and at the quoted price. I was constantly being updated with the start dates and progress of the project. Everything turned out perfectly. I would highly recommend them and plan on using them for any future projects. I have worked with many contractors and by far this was the easiest process I have been through.

frank Tuerkheimer

Mark Ganser came yesterday morning to look at some water/leak problems we had. He was exceptionally knowledgeable and helpful with respect not just to those issues, but others we asked him about during his visit. He obviously knows his business and he shared that part of his knowledge pertaining to our problems fully and clearly. It was a pleasure dealing with him.

Jeffrey Stadtmueller

Mark Ganser has addressed all our needs in the work done at our home over several years. Great products, professional and courteous staff, and overall a \"do it once, do it right\" attitude. Ganser is a great investment for your home.

Mary Sherrick

We’ve had Ganser do several projects for us since we moved into our home in late 2014 (gutters, soffits, porch overhang, bathroom, and a Trex deck). All projects have turned out wonderfully. The only issue we have had was with the apron on the deck. The vertical face board pulled away from the deck...yuck. Marc Ganser answered our call for help and had contacted Trex for a solution. A Ganser carpenter came out and completed the fix. It looked great for one season and then warped again. Whoops.... When we called again, Marc came back out and problem solved with us. Within a couple of weeks we had a new apron/solution and we have no doubt this fix will be a winner! Ganser is obviously a company that follows through! Thank you Marc. Thank you Ganser Company.

Dennis Ponozzo

We recently had our roof replaced. From the first in-home visit to the free estimate to the actual service, everything was professional and top-notch. Great communication, fast service, high quality and trustworthy. I\'d definitely recommend them...and actually we did...to our neighbors.

Jill Dumphy

We had 11 windows and 4 doors replaced - what a beautiful difference the new windows and doors have made. We couldn\'t be happier with the quality of the products, the invaluable help, the professionalism of all the people involved in our project (beginning with our first consultation with Marc Ganser, to the workers, to the office personnel). We unreservedly recommend the Ganser Company - you will be glad you chose this business!! We will be using their services again in the near future with more products to improve our home. Thank you Ganser Company!!

Gardner Peckham

Ganser is a great customer experience, perhaps the best I’ve had. They are honest, thorough, timely, efficient, and deliver very high quality products. I highly recommend them.

Arthur Meyer

During one of the torrential downpours we had late last summer, we noticed that we had a leak in our roof. This spring, I started contacting various contractors for a roof replacement quote. Out of all of the people I had come to view and get quotes, there was only one that bothered to look in the attic and that was Ganser. This is important because I ended up having some black mold started. Ganser used a systematic approach to fixing the problem that involves inspection of ALL of the elements such as proper soffit ventilation, bathroom fan ventilation, and proper attic air flow. They found that for some reason, the entire North side of my roof was blocked of ventilation. There had been continuous soffit vent material placed over plywood with only a few small openings on each side of the roof soffit overhang. Along with this, there had been plywood installed between the rafters up tight to the roof deck blocking all air flow on the North side of my house. I ended up having them do a total roof and soffit replacement on our house along with all new larger gutters. During this process, we found other issues where moisture was a problem that caused some rotting in different areas of the roof overhang. This caused compaction of my attic insulation which had to be removed as a precaution due to the mold. At the same time, they suggested having all of the penetrations for electrical wires and light fixtures foam sealed prior to replacement of insulation which I did have them do as well. They called me several times to verify their start date and answer any questions that I had. They started on time and performed all of the functions within a few days time. I am extremely satisfied with the results. All of their workers are extremely good and they never hesitated to answer questions, show me how they fixed the problems that were identified, and provide me with any information that I needed. Everything was done with a focus on proper repairs. I could not be more pleased. Had I chosen to go with the cheapest repair, I would have ended up with a new roof and continuing problems. The main issue was that the bathroom fans were not properly vented, causing the majority of the moisture problems and with little ventilation there was no way for it to dry out. This would have led to some very major issues in a few short years. Not one other company noticed or informed me of any of these issues and would have gladly replaced my roof and not fixed the problem. Yes, the project ended up costing us more money than anticipated, but now I know that my investment is properly protected for many years to come and I have an excellent warranty to back that up. If we were to sell this house after a few years of retirement as planned, within the next 5-10 years we would have had some very major expenses with another roof replacement. I am so thankful to Marc Ganser and his staff of professionals for their considerable knowledge, understanding, and craftsmanship throughout this project. They have all proven to be trustworthy, timely, honest, thorough, and committed to customer satisfaction. Words cannot explain how thankful I am to them for assistance in protecting a very valuable asset and most importantly the well being of my family by eliminating the mold problem in the early stages and fixing the problem. I now know that I have a very solid roof with ridge vents and soffit ventilation, foam sealed attic penetrations, new insulation, and properly vented bathroom fans. For this, I am truly grateful and can guarantee that Ganser WILL be part of our next home project.

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Ganser Company Inc.

1906 W Beltline Hwy, Madison WI, 53713

Call now: 608-222-1243

http://www.gansercompany.com/

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