A family-owned commercial roofing and sheet metal contractor built on decades of hands-on craft. We deliver consistent, verifiable work — on schedule, on budget, no surprises.
100+
Years in Business
Family legacy since founding
1,000+
Projects Completed
Commercial & industrial roofs
3rd
Generation Owned
Deep roots, proven craft
MN
Licensed & Bonded
Fully insured contractor
From new construction and full replacements to preventive maintenance and emergency repairs, John A. Dalsin & Son delivers end-to-end roofing solutions for commercial and industrial buildings.
New builds, complete tear-offs, and full replacements across flat, low-slope, and complex roof assemblies. We work with TPO, EPDM, modified bitumen, built-up roofing, and metal systems — specifying what genuinely fits your building's requirements.
Copings, flashings, gutters, downspouts, custom fabrication, and ornamental metal work. Fabricated in-house to exact specifications.
Detailed condition assessments, preventive maintenance programs, and emergency repair response to protect your building envelope.
Sympathetic repairs and restorations for historic structures, maintaining architectural integrity while bringing systems up to modern standards.
Warehouses, manufacturing facilities, schools, and healthcare buildings. Large footprints, tight schedules, zero tolerance for downtime.
Subcontracting to general contractors on new construction. Design-assist capabilities, submittal packages, and on-site coordination.
Multi-
Generation
Family ownership, consistent quality
John A. Dalsin & Son, Inc. has been a fixture in Minnesota's commercial roofing industry across multiple generations. Founded by John A. Dalsin and carried forward by his family, the company remains privately held — which means direct accountability, long-term thinking, and a crew that takes pride in every project.
We've roofed manufacturing plants, office buildings, schools, hospitals, and historic landmarks across the Twin Cities and greater Minnesota. The work speaks for itself: repeat clients, referral-driven growth, and a portfolio built over decades rather than assembled for a sales pitch.
Vertically integrated: We self-perform roofing and sheet metal — no subcontracting core scope.
Qualified workforce: Union-affiliated tradespeople with ongoing training and certification.
Manufacturer relationships: Authorized applicator for leading roofing membrane and metal manufacturers.
Unlike large national contractors who rotate crews and project managers, Dalsin operates with a stable, experienced team. The estimators, project managers, and field supervisors who quote your job are the ones who see it through.
That continuity produces better coordination, fewer change orders, and finished work that actually matches what was specified. It also means you can hold someone accountable if something needs attention post-completion.
Talk to Our Team
Line-item proposals you can read, not lump-sum bids. You know exactly what you're buying — and what you're not.
Projects are planned with real float, not wishful thinking. When weather or materials cause delays, you hear about it before it becomes a problem.
We stand behind our work after closeout. Manufacturer warranties are backed by a contractor that will still be in business when you need them.
No day-labor churn. Our field teams know the systems they install and hold the certifications that manufacturer warranties require.
Sheet metal components are fabricated in our own shop — tighter tolerances, faster turnarounds, and no third-party delays.
OSHA-compliant safety programs, regular jobsite audits, and EMR rates that qualify us for owner-controlled insurance programs.
Whether you need a roof replacement on a commercial building, an assessment of an existing system, or custom sheet metal fabrication — get in touch and we'll connect you with the right person on our team.
Location
Minneapolis / Twin Cities metro area, Minnesota
Specialties
Commercial Roofing · Sheet Metal · Historic Restoration · Industrial
Contractor Status
Licensed, Bonded & Insured · Minnesota Certified
Send us details about your building and scope. We'll follow up promptly to schedule a site visit or phone consultation — no obligation.
We respond to all inquiries within one business day.