Commercial Roofing in Bismarck, ND

TPO, EPDM, modified bitumen, and metal flat/low-slope roof systems engineered for North Dakota snow loads – with commercial hail-claim support and minimal downtime.

Wegner Roofing & Solar keeps Bismarck-Mandan businesses covered. Whether you need a full re-roof, a new-construction install, or a flat roof to finally stop ponding water, our ND-licensed and insured commercial crews handle it, scheduled around your operations, not ours.

A leaking flat roof doesn’t wait for your fiscal year. Neither should the fix.

Call (701) 612-2007 or request your free commercial roofing quote →

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What Commercial Roofing Systems Do You Install?

We install flat and low-slope roofing systems that make sense for North Dakota commercial buildings: TPO, EPDM, modified bitumen, commercial metal, and roof coatings. The right system depends on your building, budget, and how long you plan to own it.

Here’s how they compare:

TPO (thermoplastic polyolefin)

the workhorse of modern flat roofing. Heat-welded seams create a monolithic, watertight membrane, and the white surface reflects summer heat. Typically lasts 20-30 years with maintenance. Our most common recommendation for Bismarck flat roofs.

EPDM (rubber membrane)

a proven single-ply system with decades of cold-climate performance. The black membrane handles freeze-thaw cycling well and installs economically on larger, simpler roofs.

Modified bitumen

a multi-layer asphalt-based system with real redundancy. A strong fit for roofs with heavy foot traffic or lots of equipment penetrations.

Commercial metal

for low-slope and steep-slope commercial buildings where longevity is the priority.

Roof coatings

a restoration option that can add years to a structurally sound roof for a fraction of replacement cost.

Not sure which fits your building? That’s exactly what the free site assessment answers.

Flat-roof problems compound fast in this climate. Get eyes on yours before the next freeze-thaw cycle.

Call (701) 612-2007 or schedule your free commercial assessment →

Should I Re-Roof, Restore, or Start From Scratch?

It depends on what’s under the membrane. A structurally sound roof with isolated failures may qualify for restoration or recover, which is significantly cheaper and faster. Saturated insulation, widespread seam failure, or repeated leaks usually mean a full tear-off is the smarter spend.

The honest answer requires a core sample and moisture scan, not a guess from the parking lot. Here’s the general logic we walk owners through:

Restore (coatings/detailing): roof is fundamentally sound, leaks are isolated, insulation is dry. Lowest cost, least disruption.
Recover: one existing roof layer, dry substrate, code allows it. Skips tear-off cost and dumpster time.
Full replacement: wet insulation, multiple layers, structural concerns, or a roof that’s simply out of life. Costs more now, ends the leak-repair cycle.

For new construction, we work from your plans and coordinate directly with your spec and schedule.

Budgeting matters, and so does downtime. We’ll price every viable option side by side so you can make the call with real numbers, not pressure.

Why Do Flat Roofs Fail in North Dakota?

Five culprits, mostly: ponding water that stresses membranes, snow loads that flex the structure, freeze-thaw cycles that pry open every weak seam, wind uplift at edges and corners, and aging seams themselves. Each one is diagnosable and fixable.

Ponding water. Flat roofs are never truly flat, until drains clog or the structure settles. Standing water accelerates membrane aging and finds every pinhole. We fix it with slope correction, added drains or scuppers, and proper detailing.

Snow load. A Bismarck winter can park months of accumulated snow on your roof. That weight stresses decking, opens seams, and turns small defects into interior leaks when it melts in March.

Freeze-thaw. Water gets into a gap, freezes, expands, and pries. Repeat 60 times per winter. Small defects that would stay dormant in a milder climate become active leaks here in North Dakota.

Seam failures. Every seam is a future leak candidate as adhesive seams age, flashings pull away, and seals loosen. This is why seam quality matters so much in ND, and why heat-welded TPO seams outperform glued ones over time. We address failing seams with re-welding, targeted detailing, or restoration coatings depending on extent.

Wind uplift. Prairie wind works hardest at your roof’s perimeter and corners. Proper edge metal and fastening patterns are code requirements for a reason.

If you’re seeing stains on ceiling tiles, don’t wait for the drip. Leaks show up far from their source on a flat roof.

Do You Handle Commercial Hail and Storm Claims?

Yes. Hail damage on TPO and EPDM is often invisible from the ground but very real to an adjuster with the right documentation. We inspect, photograph, and document the damage, then coordinate directly with your insurance adjuster through the claim.

Commercial claims are bigger, slower, and more scrutinized than residential ones. Carriers look hard at membrane bruising, fractured coatings, and dented flashings. The difference between an approved and denied claim is often the quality of documentation.

We’ve handled that documentation and adjuster process across hundreds of storm claims. If your building took hail this season, start with our storm and hail damage roof repair or call us before you file.

How Do You Keep Our Business Running During the Project?

By planning around your operations from day one. Every project starts with a free assessment, a detailed written scope, and a schedule built around your hours, deliveries, and customers, including nights, weekends, or phased sections where needed.

Here’s the process, start to finish:

Free site assessment – roof condition, moisture, drainage, code review
Written scope and quote – options priced side by side so there are no surprises
Scheduling around your operations – phasing, access, and noise planned in advance
Installation – safety-compliant crews, clean staging, daily site cleanup
Final walkthrough and warranty delivery – you see everything before we call it done

Safety and code compliance aren’t add-ons. Our crews work to current safety standards, and every install meets North Dakota commercial building code.

Are Your Commercial Roofs Engineered for North Dakota Snow Loads?

Yes. Every system we install is designed to meet North Dakota snow-load requirements for your building’s location and roof type. That includes drainage design; because snow load isn’t just weight, it’s where months of meltwater goes when it finally lets go.

Snow-load design on a commercial roof covers more than the membrane. Drift loading against parapets and rooftop units, drainage capacity for spring melt, and the structural condition of the deck all factor in. If your building is older, a re-roof is the right moment to verify the structure still meets today’s requirements. We flag any concerns during assessment, before they become winter emergencies.

Can I Finance a Commercial Roof Replacement?

Yes. Commercial pricing is always project-specific, so start with a free assessment rather than a ballpark. Wegner offers 0% interest for 6 years, no-money-down and no-out-of-pocket programs, and a Price Beat Guarantee on comparable quotes.

0% interest for 6 years financing available
No money down / no out-of-pocket programs
Price Beat Guarantee
Free inspections and assessments

Roofing calendars fill fastest right after storm season. Lock in your assessment now.

Why Do Bismarck Businesses Choose Wegner for Commercial Roof Work?

Because we’re local, we’re certified, and we’ll still be here when your warranty matters. Family-owned since 2011, licensed and insured in North Dakota, manufacturer-certified crews, hundreds of five-star reviews, and ranked #58 among the Top 100 U.S. roofing contractors.

Commercial roofing rewards contractors who show up year-round, not storm-chasers who disappear after the insurance checks clear. Our crews are based here, work here through the winter, and answer the phone in the same office next year. Commercial references available on request.

When your building needs full envelope work, exteriors, or restoration, start with the Bismarck roofing contractor that handles all of it.

Where Do You Take On Commercial Projects?

Our commercial crews stage out of 533 Airport Road Ste. A, minutes from the airport corridor and south Bismarck’s warehouse and retail strips, which means fast response for leak calls across the metro core.

Downtown Bismarck’s older masonry buildings bring their own challenges (aging built-up roofs, parapet drainage, tight alley access) and we plan staging accordingly. Across the river, Mandan‘s industrial parks and retail strip lean heavily on TPO and EPDM, where river-valley wind exposure makes edge securement critical. Lincoln‘s newer commercial builds sit on open ground where uplift ratings do real work.

Farther out, we schedule crews for Washburn and Wilton along the Highway 83 energy corridor and Hazen to the west. Anywhere in Burleigh County and the surrounding area, we’ll get a project manager on your roof.

What Bismarck Homeowners Say

Frequently Asked Questions About Commercial Roofing

What commercial roofing systems do you install in Bismarck?

We install TPO, EPDM, modified bitumen, commercial metal, and roof coatings – the full range of flat and low-slope systems. The right choice depends on your building’s structure, use, and budget, which is exactly what our free site assessment determines.

Should I repair, restore, or replace my flat roof?

It depends on age and what’s under the membrane. Isolated leaks on a sound roof often mean restoration; saturated insulation or widespread seam failure means replacement. A free assessment with moisture scanning gives you the honest answer, priced both ways.

How long does a TPO or commercial roof last?

Most commercial systems (TPO, EPDM, modified bitumen) deliver 20-30 years with routine maintenance. Lifespan depends heavily on installation quality, drainage, and regular inspections. A neglected roof fails early; a maintained one often outlasts its warranty.

Do you handle commercial hail and storm insurance claims?

Yes. We document hail and wind damage, including membrane bruising that’s invisible from the ground, and coordinate directly with your insurance adjuster. Thorough documentation is often the difference between an approved commercial claim and a denied one.

How do you fix ponding water on a flat roof?

We correct the cause, not just the symptom: slope correction with tapered insulation, added drains or scuppers, and proper membrane detailing at low points. Standing water accelerates membrane failure, so ponding is worth addressing before it becomes a leak.

Can you work around our business hours?

Yes. We schedule commercial projects to minimize downtime: phased sections, off-hours work where needed, and staging planned around your deliveries and customers. Your written scope includes the schedule before work begins, so there are no surprises.

Are your roofs engineered for North Dakota snow loads?

Yes. Every system is designed to current North Dakota code snow-load requirements, including drift loading and drainage for spring melt. On older buildings, we verify the deck and structure during assessment and flag any concerns before installation.

How Much Is That Leak Costing You Right Now?

More than the roof repair will.

Your customers notice the stained ceilings. Soaked insulation results in higher heating bills. Inventory, equipment, and operations at risk. Flat-roof damage gets more expensive every week it goes undiagnosed. Finding out the source of that leak costs nothing.

One free site visit tells you exactly what shape your roof is in, what it needs, and what every option costs, from a targeted fix to full replacement. No pressure, no obligation, no invoice.

Small membrane failures become six-figure interior damage. Get ahead of it this season.

Call (701) 612-2007 – Mon-Fri, 8AM-5PM
Request Your Free Commercial Roofing Quote

Wegner Roofing & Solar
533 Airport Road Ste. A, Bismarck, ND 58504