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Our Happy Customers

“My wife and I want to thank you for the fine work your company did this summer when replacing our damaged roof. What started out as a relatively small project snowballed due to a vendor’s error in the materials delivered to our site. However, Jim did the right thing. Without any hesitation, he arranged for the materials to be replaced and the work completely redone correctly. He also attended to several cosmetic details at the end of the project until we were 100% satisfied. As a result, you now have another loyal customer with a good story to tell. As far as we’re concerned, there’s only one roofer in the Madison area, and that’s Ganser. In addition to Jim who managed the project, the fellows who worked on the job were outstanding. Unfortunately, we don’t remember all of their names, but Chase, Mark, and Martin come to mind. Thank you.”
Jeffrey and Helen M.

“We wanted to tell you how pleased we are with our roof that you installed. From the proposal to the final nail, you and your employees did an excellent job. Marc was very knowledgeable in explaining the process, the different quality of the products, and the pricing. We felt comfortable with the accuracy of his proposal. The crew that did the work was very polite. They answered questions we had while the roof was being installed and cleaned up their work areas along the way.
We are sure happy we chose the highest quality architectural shingle. We have had several neighbors compliment us on the roof and asked who did the work. We don’t hesitate to let them know that Ganser Company did the work.
Sometimes home remodeling projects can be a real hassle, but we are sure glad that your company made it very easy. Please feel free to use us as a reference.”
Rob and Kim S.

“Everyone we worked with were very courteous and friendly. They answered all questions we had. We have had several people stop and tell us how good the house looks! They love the French doors when people stop in to visit. You all did a wonderful job! Nicely done!!!”
Duane and Kathy J.

“Thank you to you, your crew, and your staff at the Ganser Company for your help with the recommendations and the replacement of our roof, gutters, soffit, and insulation at Westwood Christian Church. We have had time to put these new items into use and everyone agrees it was the best solution to our situation. I also want to thank you for your patience throughout the education and budgeting process as well as completing the project within our narrow window of time and in a professional manner. If you ever need a good reference for your company please be assured you can count on Westwood Christian Church to do so.”
Dick J.,

Trustee, WCC

“We were very pleased with everyone involved with the Ganser Company, from the office personnel to the estimator and the actual work crew. They were considerate about protecting our shrubs, deck, and driveway. Marc explained step by step, the procedure of replacing the roof. The crew picked up all debris and nails following the job. The roof is beautiful and we’d recommend them to anyone needing roof repair. We already told our neighbor whose roof you’re currently doing. Thanks for a job well done!”
Carol and John J.

“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.”

Susan Schneck

I highly recommend The Ganser Company! Great people! Great work! When we started looking to have our roof and siding done, we had other companies come to give us estimates. Not one of them climbed on the roof or looked into our attic. One company didn’t even meet us, they drove by and called us with a quote. Then Marc Ganser came to us. He sat down with us and not only listened to what we wanted, but also did a very thorough inspection to understand what areas had some damage and needed attention/repair. This way he could give us the most accurate quote he could. He also talked us though the fact that our chimney was not up to code and recommended another company (Hanson & Sons) to do the work. Even though they were a separate item, they stayed in touch with Marc to let them know when that was complete so that Ganser could schedule the roof. We had also visited the Ganser showroom with Marc to pick our colors and he was able to do a computer rendering of our house (since he had taken pictures while he was there) and show us a simulated version of different siding colors to help us visualize. Work on our roof began with the Ganser crew, headed by Jesus. He was so very professional and personable through the days that followed, always smiling and talking me through any questions or concerns that came up. Their crew was exceptional – fixing any damages we had on our old roof and making sure that the work was done correctly.
After the roof, the siding work began and Jesus led the crew again through that week of work. Once again, ever professional, prompt and courteous. They did an outstanding job! The gutter crew came within a couple days of the siding completion to do the installation of the gutters and downspouts. Ganser took care of all permits that were needed and cleanup after the work was done – The job was complete on time. At the price quoted. Marc came over once again, to bring us the warranty certificates and make sure we were satisfied with their work….WE DEFINITELY ARE!

Julie Hustad

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.

Arthur Meyer

“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.”

Scott Mac Naughton

Ganser Co. has assisted us with several improvement projects on our historic home, which was built in 1903 – 1904.
The first project involved the restoration and rebuilding of 2 rear exterior porches. The work was complex and challenging due to the need to blend modern building with existing architectural details original to the home. Ganser Co. employees gave an extraordinary effort in finding solutions to the unique situations presented, and the result was exceptional. Currently Ganser Co. is replacing original single pane windows on our home with durable, energy efficient Marvin Infinity ones. The project is being accomplished in several phases due to the size and number of windows. Ganser Co. has been excellent to work with. We appreciate the quality of workmanship, the reliability and professionalism at all levels of the company, and the consideration and respect they have given us. We highly recommend Ganser Co.!

John Peterson

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.

Tracy Koziol

“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.”

Frank Tuerkheimer

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.

Jeffrey Stadtmueller

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.

Mary Scherrick

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.

Dennis Ponozzo

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!!

Jill Dumphy

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!

Vincente Venute

“Had a bad roof leak on Saturday after the polar vortex and subsequent thaw. Tried four other places first, before contacting Ganser. Ganser admitted they couldn’t do anything before Monday but promised to call us back then.

8:30 Monday morning (prompt!) we got our callback, and an appointment scheduled for noon. The repair guy showed up not just on time, but early, and had the work done well ahead of schedule. The cost was very reasonable too.

Highly recommended.“

John Sears

We installed Infinity replacement windows two years ago and were so pleased with the Marvin product and the people at Ganser, we had them replace our French doors with Infinity sliding doors. We recommend highly the Ganser Company and Marvin products. Thanks Mark!

Kathleen Weber

We had two new doors and a solar tub installed. This is the third project we have had with Ganser Company. Three guys arrived at 8am and they finished well before I returned home from work at 3pm. The fit and finish were excellent. They even installed a storm door and dead bolt we got at Menards. Mark Ganser is great to work with. He listens to what you want the project to cover and shows you what they have to offer, which is a lot. My thanks for making this so easy.

Tom Thompson

I hired the Ganser Company to do a bathroom remodel for my parents. This included the removal of the old tub, complete demo and then installation of a walk-in shower with bench, safety handrails and removable shower head.

The job was completed ahead of schedule, at the quoted price and it looks better than we ever imagined. Jason and Greg did a fantastic job of explaining the options, the pros, and cons of the various solutions and then executing our plan.

We could not be happier! The quality of the work is off the charts. Everything was top-notch from start to finish. Thank you Ganser Company!

Dane Fjelstad

Our experience was amazing. From the initial meeting with Matt to the final walk through, everything was great. The company kept me well informed of the schedule and they were always on time. The work looks amazing. The site was spotless at the end of each day. The people were friendly and courteous. Everything was amazing. I recommend them without hesitation.

Cory Buye

We have used Ganser Company a number of times with great success. Our most recent project was to add roof ridge vents, replace soffit & fascia and do insulation of vent pipes in the attic. The crew, led by Kyle, were very efficient and professional and did an excellent job with minimum disruption. They kept us well informed throughout the work and were eager to answer any questions we had during the project. At the end, the clean-up was very well done. We were very pleased with the results and would not hesitate to call on them again for future needs.

Jack Winder

“We hired Ganser to replace our roof and spruce up our front porch. The project could not have turned out better. Marc from Ganser came to our house to help us make a plan that would be in our budget. Marc majored in art history in college, and it shows. His ideas and recommendations are based in history, so he has wonderful sense of how to bridge the present to the past. Marc listens to peoples ideas and brings other solid ideas to the table.

Once we got started, I was totally impressed with the roofing crew. They were polite, courteous, efficient, and their work was top notch. After the roof, the carpenters came. They were like magicians. The quality was 10/10. I could not believe the amount of quality work that was done in just a few days. With both the roofers and carpenters, the work site was left as clean as could be during and upon completion of the project.

The whole project stayed on budget and on time. I wasn’t expecting to have this reaction after the project, but I literally have fallen more in love with my house. When I am walking my dog and rounding the corner to my house, I can’t wait to see it. It a weird feeling to suddenly be significantly more in love with something that I already loved.

The materials that they use are state of the art. They have higher cost and lower cost options. Marc visits the project after the project is done to make sure that everything went according to plan. I would definitely suggest to anyone to give Ganser Company a chance when planning a project.“

Josh Palmer

Exceptional work! A very professional and skilled team. The crew (Jake-lead installer, Tyler, Ray, Trooper, Greg and Dave) quickly and skillfully installed Infinity Windows and Patio Doors by Marvin in my home. I was fortunate to be at home during the project to witness the careful installation of the windows and doors. They took great care to make certain that each window and door were leveled and sealed completely. They carefully worked around the plants in my landscaping and cleaned up thoroughly. I was pleased to have quality inspections by project managers, Jim and Lance, during the process and at the end of the installation. Everyone communicated with me to ensure my satisfaction with the finished product. Jake was very patient with me and answered my questions and concerns. Everything went according to schedule. Thank you for a job well done! I have no hesitations highly recommending Ganser Company to family and friends for their home improvement projects. I would definitely consider them for another project in my home.

Janis Kriehn

Extremely happy with the work done by the folks at Ganser. They did a wonderful job replacing our second story master bathroom shower after it began leaking into our living room (originally a tile shower that had not been installed properly by the previous homeowners). Love the results. I want to specifically thank and recommend Jason, the sales person that helped us plan out the project and get the paperwork in order, and Greg (and crew!) that made it a reality. All were professional, friendly, and very easy to work with. We’ll certainly use Ganser again in the future (hopefully for something less urgent!)

Kevin Vredevoogd

“I recently had Ganser Company remove 2 layers of old shingles and replace it. I am very happy about the results. Joe, our representative did an excellent job of explaining our options, the company background, the products to be utilized, and the “in-house” installation team. After receiving multiple bids on the property, I was fully confident in the complete package I was getting with Ganser. Once I placed the order, the work was done immediately. The product was delivered exactly when I was told it would be. The crew showed up exactly when I was told they would. They completed the job completed exactly how and when I was told. Other than the beautiful finished product, there was no sign that they had been there. A couple of days after the job was done, Joe returned to assure that I was completely satisfied with the job.

My job has me working closely with contractors all of the time. Few have ever stepped up and delivered exactly what they said as Ganser Company. I wouldn’t hesitate to use them again, or recommend them to someone.“

Richard Vernier

We’ve had Ganser do 3 jobs for us over the years: a new kitchen island, a large fantastic new window also in the kitchen, and most recently re-siding our woodpecker-ravaged North side. Obviously we are completely satisfied. The crews have a good work ethic, are careful, clean-up thoroughly, and perhaps most importantly they listen to and take into consideration my wife’s concerns. No question we will hire the Ganser Co. again. (Future roof job in the cards.)

Scotric MacEegle

We have had a fantastic experience working with Ganser for new windows and roof. Everyone person on the job was professional and experienced. They took the time to explain the process, cleaned up nicely, and the work they did is high quality. We will definitely go back for more work.

Katy Ptaszynski

“Ganser Company put a new roof on my tool shed and new siding and cladding on my porch, as well as putting new cladding around my garage door. The porch was totally transformed and the work is beautiful. The roof on my tool shed is also beautiful. Clean up was impeccable which really mattered to me as I have dogs who use the yard where the work was done. I would definitely recommend Ganser Company to other people and would use them again if I had a need for the kind of work they do.

Margaret Reno

“This summer my wife and I decided to fix the appearance of our home. we got quotes from 4 companies and almost cancelled #5 (Ganser Company) because we had made a choice. We did keep the Ganser appt and are very happy we did. Marc Ganser came out and not only walked around the home like everyone else, he crawled into the attic and went up on the roof. He pointed out the things I knew were bad but also pointed out why, along with a couple up coming problems. We decided to go with Ganser and the work occurred in 2 stages, roof first then siding/trim and attic. Both crews were prompt, efficient, and very courteous. We liked that all work was handled by one company especially when 2 appearance problems came up. While they had nothing to do with integrity of the finished product we just did not like them as they appeared. Both items were quickly remedied to our needs. The crews did a great job cleaning up every day and even went as far as putting our patio furniture back in place before leaving. Workmanship was very good and I did not see any corners cut to save time or money. Great company and PEOPLE at all levels to work with

Dave Hollub

We had Ganser install 4 windows for us. They were able to do the work on our timetable and were quick to address any issues along the way. We couldn’t be happier with the quality of the windows and the installation work. The team was respectful of our home and made sure to thoroughly clean up after themselves. We plan to use Ganser again for our big home projects.

Jon Minnick

“We are very pleased with the new roof from Ganser. From our first inspection by our sales person Mark Ganser, through the installation by Jesus and his crew, to the final follow up by Mark, our experience has been completely positive. The installation was done quickly and professionally with excellent clean up. I especially liked that Mark recommended the best underlayment and extra vents to keep our roof cold and dry for years to come. If there’s one thing my dad taught me it’s “buy cheap, buy twice.” Definitely NOT something you want to do with a roof.

John Bill

We had to replace all of our aging windows. The entire Ganser crew was professional, respectful of our property, efficient, did an excellent job of window replacement, and clean-up. We are extremely happy with the outside cladding, and now don’t have to look forward to periodic trim painting. We also really like the upgraded screens, which really are almost invisible. We’re very happy with the work crew, service, and of course the Infinity replacement windows. Thanks for a great job!

Paul Larson

I’ve used Ganser for two major projects and one minor project on my home, which was built in 1909. To date, Ganser has replaced my roof, remodeled and enclosed my front porch, and, most recently, replaced windows. I worked with Travis on my first project, and with Marc on the two most recent projects. Both are great guys who I trust with my home – and I don’t say that lightly. I wouldn’t have any other company work on my house.

Each time I have worked with Ganser, they have been professional, prompt, and responsive when I had concerns or questions. The costs are fair and reasonable, especially given the challenges of working on an older house. The craftsmanship and materials used are excellent, and the results have greatly improved the look (and value) or my home.

The work crews are courteous. They show up on time and finish as promised. They have been conscientious about cleaning up and about protecting my home, and my neighbors’ homes, during projects. I cannot say enough good things about my experiences. As a former colleague once said, “You’d be crazy to have anyone BUT Ganser carry out this project.”

Lucy Mathiak

“Unfortunately we were hit by a major hail storm and were in need of some major repairs.

I am new to the area and wanted to make sure we would could retain a reputable company to secure our repairs.
After a little bit of homework I invited Mark Ganser into our home for an interview.

We were extremely impressed with his professionalism, and knowledge of what would be required to put our home back to its better than original condition!

Mark went into great detail about how Ganser only does it’s roofing the “Ganser Way”
I must admit, it truly was better than new..

The siding, gutters and roof have all been replaced with total care for our property, including the grass, trees, and shrubs.. They were never in danger of being hurt during the process.

If we are ever in need of future work for our home, we will certainly call Mark and his team of professionals to do our home repairs.

They are top notch and total professionals.“

Steve Foresta

A tree damaged the front gable of my house; resulting in the entire roof-line edge from peak to gutter including crown modeling and shingles needing to be replaced. Bummer.
It was a complicated job because of the height and pitch of the repair – it would require two-people. It was further complicated because the work needed to duplicate the opposite roof line, and the new shingles needed to match the existing ones. Bummer.
I contacted the Ganser Company for an estimate, which they provided in a timely manner at a reasonable price. To my delight, the crew assigned to the job did a beautiful job; they removed and replaced all the damaged materials in meticulous fashion – as if there was never any damage! Thank you, thank you!

Anya Firszt

We are very happy with Ganser for our Window and sliding door install. Our representative Matt made what could have been a drawn-out, dull process into a fun and welcoming experience.

The lead installation tech was very kind and considerate who went above & beyond to meet our needs.

The windows really make our home look like a completely different place!

Chantel Soumis

Contact us to get a free quote for your project!