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M J Dalsin I am a facility manager covering 10 states for an extremely large restaurant franchise. I have used MJ Dalsin in South Dakota market for roof repairs. They have fixed all my roof issues in a timely manner and provide before and after photos. They are professionals in the roofing business and I will continue to use their services. I operate a Full Service Hotel and they have been a wonderful partner over the last year with cleaning up our roof with repairs. They take action and do quality work! I don't know what I'm more impressed with; the customer service or the skill of the technicians.
Services
We have made a strong presence in our industry and are continuously striving to offer the best results to our customers. Our experience with nearly all types of roof systems has made us become one of the top roofing companies in the nation. Our Midwest roots date back through three generations to 1912.
Quality products and skilled craftsmanship are the key elements that separate professional roofing contractors from the amateurs. The EPDM rubber roof system has become the most economical product for construction leak-proof low-slope roofs, and its durability has been proven as we've applied it to over 35 million square feet over the past 30 years.
MJ Dalsin has a maintenance/repair department that has a 24-hour emergency service. Our service technicians are qualified to do repairs and maintenance on all EPDM, TPO, PVC, Built-up asphalt, and metal roofs. We also do elastomeric roof coatings and snow guards. Your business, your roof, and your complete satisfaction are important to us.
We offer a preventive maintenance program with annual or bi-annual inspections called 'Roof Care'. Our trained personnel will examine your roof and accessories for any damages, problems and/or defects to your roof system at pre-set intervals. All problems that are detected will be brought to the owner's/manager's attention along with a report with photos and a remedy for these issues. The most important factors in a roof's life cycle is to regularly inspect and perform all preventive maintenance that is needed.
Reviews (13)
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Zach Tillett
Nov 22, 2021
MJ Dalsin goes above and beyond with thorough detail when it comes to anything on the roof. Fast service, and excellent attention to detail. The group of guys over at MJ Dalsin are one of a kind and should be used for any leak, repair, you name it when it comes to your roof. MJ Dalsin should be your first thought when you hear roofing! Absolutely recommend!
Jake Rothwell
Oct 19, 2021
Their quality was of work is excellent. The team Is very professional, easy to work with, and very responsive.
Mark Werner
Jun 25, 2021
I don't know what I'm more impressed with; the customer service or the skill of the technicians. I'm in Brookings South Dakota and they are located in Sioux Fall South Dakota. The distance is roughly 50 miles. There have been times when I've called with a problem and they showed up the same day. We have one of those aging roofs with rocks on top of a membrane. MJ Dalsin has never failed to find the pin hole that is causing the leak.

It's not just one technician with this talent, the whole crew is able to find the leak just by stepping it off from the inside of the building. I've kidded them before about working themselves out of a job because when they fix a leak it's for good. They even date and initial the patch. MJ Dalsin calls before they get here, contacts me when they get here, inspects the roof, shows me the pictures of the problem, tells me what they're going to do and then contacts me when it's done for my inspection and approval. Awesome is way over used but it's the best word to describe MJ Dalsin. Thank you! Mark A. Werner
James Donovan
Jun 24, 2021
I am a facility manager covering 10 states for an extremely large restaurant franchise. I have used MJ Dalsin in South Dakota market for roof repairs. They have fixed all my roof issues in a timely manner and provide before and after photos. They are professionals in the roofing business and I will continue to use their services. Services: Roof inspection, Roof repair
Chad Burleson
Feb 26, 2021
The Top Roofing Company In Sioux Falls. I operate a Full Service Hotel and they have been a wonderful partner over the last year with cleaning up our roof with repairs. They take action and do quality work! Thank You MJ Dalsin! Service: Roof repair
Bill Boyd
Jan 06, 2021
I've used MJ Dalsin Roofing for a number of projects. I manage 20+ businesses in the Sioux Falls area. These guys treat me like I'm their only customer. They're professional. They're solid. I trust them.
Mark Werner
Nov 03, 2020
I don't know what I'm more impressed with; the customer service or the skill of the technicians. I'm in Brookings South Dakota and they are located in Sioux Fall South Dakota. The distance is roughly 50 miles. There have been times when I've called with a problem and they showed up the same day. We have one of those aging roofs with rocks on top of a membrane. MJ Dalsin has never failed to find the pin hole that is causing the leak.

It's not just one technician with this talent, the whole crew is able to find the leak just by stepping it off from the inside of the building. I've kidded them before about working themselves out of a job because when they fix a leak it's for good. They even date and initial the patch.
MJ Dalsin calls before they get here, contacts me when they get here, inspects the roof, shows me the pictures of the problem, tells me what they're going to do and then contacts me when it's done for my inspection and approval.
Awesome is way over used but it's the best word to describe MJ Dalsin. Thank you!!
Richard Kelly
Aug 03, 2019
We are very happy with the work that MJ Dalsin did. Our roof was well overdue to be replaced and we were in quick need of a replacement. MJ Dalsin was quick to give us a quote and they started on the roof shortly after. Friendly staff, professional service, and we couldn't be happier with the result.
Angie Nagel
Jul 12, 2019
Recently had this roofing company come to the strip plaza my business is and thoroughly went over our leaky roof. Over the course of the 12 years I have been in this location these guys are the real deal. THEY KNOW ROOFING. They also stopped back in just to check and see how things were after a recent rain! Call these guys first before you waste your money somewhere else!
Peter Kleinjan
Jun 19, 2019
Commercial roofing is a specialized field. MJ Dalsin is simply the best contractor in South Dakota when it comes to flat rubber roofs or sheet metal maintenance and repairs. They do great work on new construction to make the building look as designed. Their sheet metal can create an amazing look for an industrial structure that even an architect would be happy with. Whether you have a warehouse, retail, or office building, I highly recommend MJ Dalsin. Reggie is the guy to talk to!
Corey Burton
Jun 09, 2019
I work at a local manufacturing company in Sioux Falls, where we have battled roof leaks in certain areas for years. We have used multiple roofers in an attempt to fix some problematic roof leaks on a flat roof but never really had any luck with fixing these problems. We called these guys out and in one afternoon they fixed multiple problem areas (haven't leaked since) as well as basically assessed the entire rest of the roof.

In dealing with them since I would consider them one of the best most professional outfits we deal with, I wouldn't use anyone else at this point. If you are having roof issues, look no further.
Shana Showers
Apr 28, 2019
MJ Dalsin Roofing Company is a fantastic Vendor to work with if you are needing repairs or maintenance on your roof. The work will be completed at the highest quality and in a timely manner. The guys at MJ Dalsin are top notch. You will not be disappointed with the excellent service they provide. I would highly recommend for any of your roofing needs! Shana Showers- Keller Williams Realty Sioux Falls
Terry Johnson
Apr 05, 2019
Great crew showed up promptly to deal with some leaks in an older flat roof. Also came back on short notice when a new leak was discovered. Very professional and courteous and fantastic to work with. Highly recommended