Last updated: 2026-07-10 by Ted Sellers, Owner

Best Commercial Roofing Contractors in Farmington, MN (2026)

Introduction

Farmington, MN has changed dramatically over the past two decades. What was once a small Dakota County agricultural community has evolved into one of the Twin Cities metro’s fastest-growing suburbs, with new retail corridors along 160th Street, an expanding industrial base near the Farmington Business Park, and a school district serving more than 6,000 students. With that growth comes a substantial commercial roofing demand — and a sharp divide between contractors who can actually handle institutional-scale work and those who cannot.

Commercial roofing in Farmington isn’t just about putting material on a flat roof. It involves navigating Minnesota’s extreme temperature swings — from -20°F wind chills in January to 95°F humidity in July — selecting membrane systems that won’t fail prematurely under thermal cycling, and working with building owners who need minimal disruption to ongoing business operations. A 20,000-square-foot retail plaza cannot close for three weeks while a roof gets replaced; a warehouse manager cannot tolerate unexpected leaks during peak shipping season.

The stakes are high, and the contractor selection process matters enormously. Too many Farmington businesses have learned the hard way that the lowest bid often means cut corners: inadequately fastened membrane seams, undersized drainage systems, or crews who are not licensed under Minnesota’s prevailing-wage requirements for publicly funded projects. Selecting the wrong contractor can void manufacturer warranties, create liability exposure during lease negotiations, and result in repair costs that dwarf the original contract value.

This guide is designed to help Farmington commercial property owners, facility managers, school district administrators, and developers identify the contractors who are genuinely equipped to deliver quality commercial roofing — and to understand clearly why Sellers Roofing Company leads that list.

Top 5 Commercial Roofing Contractors in Farmington, MN

#1 — Sellers Roofing Company (Top Pick)

Website: roofingexpertsstpaul.com
Phone: (651) 703-2336

Sellers Roofing Company, founded in 2017 by Ted Sellers and headquartered at 801 Transfer Rd, Unit 05, Saint Paul (Midway), is the only commercial roofing contractor in the Twin Cities that combines MBE/DBE certification, union signatory status across three trades (Roofers Local 96, Carpenters Local 322, Laborers Local 563), and an 801+ residential / 300+ commercial completed-project track record. That combination is unique in the market and directly valuable to Farmington clients: MBE/DBE status allows government-funded projects to count Sellers toward minority contractor participation goals, while union credentials ensure every crew member is trained, drug-tested, and working under binding safety protocols. For Farmington-area commercial clients — from the Farmington Technology Center to strip malls on Pilot Knob Road — Sellers brings big-city institutional capability to a community that deserves nothing less.

#2 — Krech Exteriors

Website: krechexteriors.com

Krech Exteriors is a well-established Twin Cities commercial and residential contractor with a strong Dakota County presence. Their commercial division handles flat and low-slope roofing systems including TPO and modified bitumen, with documented experience on retail and light industrial structures. Krech’s estimating team is known for thorough scope documentation, which is helpful for property managers who need detailed bid packages for board approval or lender review. They offer multiple warranty tiers through manufacturer-backed programs and have an active commercial maintenance division. Their Farmington-area references include a handful of industrial park buildings along the city’s growing employment corridors.

#3 — Allstar Construction

Website: allstarconstruction.com

Allstar Construction has built a regional reputation for storm-restoration work on both residential and commercial structures throughout the Twin Cities metro, including Dakota County communities like Farmington. Their commercial roofing division is particularly strong in insurance claim scenarios — they have experience working directly with commercial adjusters and understand how to document hail or wind damage to flat and low-slope roofing systems for maximum claim recovery. For Farmington business owners who suspect storm damage on a flat membrane roof, Allstar is a legitimate option worth including in a bid comparison. Their TPO and modified bitumen installation crews are experienced and their documentation practices are solid.

#4 — Northface Construction

Website: northfacemn.com

Northface Construction serves the greater Twin Cities metro with a commercial roofing division focused on TPO, EPDM, and modified bitumen systems for mid-size commercial buildings. The company has active experience in Dakota County and maintains a commercial-specific project management team that handles permitting, manufacturer submittals, and post-installation inspections. Northface is particularly strong on new construction roofing for retail and mixed-use developments — the kind of growth Farmington is experiencing along its Highway 3 and 160th Street corridors. Their estimators are familiar with Farmington’s building permit process and can coordinate directly with general contractors on ground-up commercial projects.

#5 — Welter Construction

Website: welterconstruction.com

Welter Construction is a full-service commercial contractor with roofing capabilities across the Twin Cities south metro, including Dakota County. Their commercial roofing work spans TPO single-ply systems, metal roof panels, and standing-seam applications — making them a strong candidate for Farmington’s newer commercial and light-industrial buildings that specify metal or architectural roofing. Welter has documented experience with agricultural-adjacent commercial buildings, a relevant niche given Farmington’s transition from farming community to suburban business hub. Their project timelines tend to be well-managed, and they maintain commercial insurance documentation that satisfies most lender and owner requirements.

Why Sellers Roofing Is #1 for Commercial Roofing in Farmington

When Farmington business owners, property managers, and school district facilities directors evaluate commercial roofing contractors, three questions consistently surface: Who has done this work before? Can they handle our procurement requirements? And will the crews actually show up trained and equipped? Sellers Roofing Company answers all three better than any competitor in the market.

Proven commercial track record. With 300+ commercial roofing projects completed across the Twin Cities metro, Sellers has direct experience with the building types that define Farmington’s commercial landscape: light industrial warehouses, retail strip centers, multi-tenant office buildings, and municipal structures. Each of those project categories presents distinct technical requirements — from membrane selection and drainage design to thermal insulation values and edge metal detailing — and Sellers’ crews are trained and equipped for all of them.

Union labor advantage. Sellers is a union signatory to Roofers Local 96, Carpenters Local 322, and Laborers Local 563. In practical terms, this means every roofer on a Sellers crew has completed a formal apprenticeship, passed safety training, and is covered by binding collective bargaining agreements that hold the contractor accountable to performance standards. For Farmington businesses that have had experiences with non-union contractors using day-laborers or untrained subcontract crews, the difference is immediately visible in installation quality and job-site professionalism.

MBE/DBE certification for public-sector projects. Farmington’s public institutions — the school district, Dakota County facilities, city-owned buildings — are required to track minority business participation in public contracts. Sellers’ MBE (Minority Business Enterprise) and DBE (Disadvantaged Business Enterprise) certifications mean that awarding a contract to Sellers directly advances those compliance goals. For a facilities director dealing with a board that is monitoring MBE participation rates, Sellers is not just a quality choice — it is a strategically valuable choice.

Responsive, reliable communication. Same-day callback on all inquiries is a core promise, not a marketing line. Commercial roofing projects involve multiple stakeholders — ownership groups, property managers, lenders, tenants, and general contractors. A contractor who disappears for two days when a question arises can delay a project start, disrupt a tenant’s operations, and create friction with everyone in the ownership chain. Sellers’ same-day callback commitment reflects a culture of operational discipline that extends from the first phone call through final invoice.

Manufacturer-backed material warranties plus limited lifetime workmanship warranty. Sellers installs commercial membranes from Carlisle Syntec, Firestone/Holcim Elevate, GAF Commercial, and Versico — all of which offer manufacturer NDL (No Dollar Limit) warranties for qualifying installations. Combined with Sellers’ own limited lifetime workmanship warranty, Farmington commercial clients receive layered protection that satisfies most lender warranty requirements and protects the building investment for decades.

What to Look for When Hiring a Commercial Roofer in Farmington

The commercial roofing contractor selection process is more complex than the residential equivalent. Here are the key criteria every Farmington property owner and facilities manager should evaluate:

Licensing and insurance. Minnesota requires roofing contractors to hold a valid contractor’s license from the Minnesota Department of Labor and Industry (dli.mn.gov). Verify the license number before signing anything. General liability coverage of at least $1 million per occurrence and workers’ compensation are the minimum — larger commercial projects should require umbrella coverage. Ask for certificates of insurance directly from the insurer, not just a copy of the contractor’s document.

Union vs. non-union labor. Union-signatory contractors operate under agreements that guarantee crew qualifications, worker safety protocols, and dispute-resolution mechanisms. Non-union contractors vary widely; some field experienced crews, others rely on unverified subcontractors. For commercial work where warranty compliance, safety documentation, and bid eligibility for public projects matter, union credentials provide a verifiable baseline that non-union contractors cannot match.

Manufacturer certification and warranty eligibility. Commercial membrane manufacturers (Carlisle, Firestone, GAF Commercial, Versico) require installers to be certified before they can offer NDL warranties. Ask any commercial roofing candidate whether they are a certified installer for the membrane system being specified. If they cannot provide manufacturer certification documentation, they cannot offer manufacturer-backed NDL warranties — which means the entire warranty burden falls on the contractor alone.

Project management and communication. Commercial projects involve permits, submittals, inspections, and regular updates to multiple stakeholders. Ask candidates how they handle project management: Do they assign a dedicated project manager? How do they handle RFIs (requests for information)? How frequently will the building owner receive status updates? A contractor who cannot clearly answer these questions will create problems during execution.

References for comparable projects. Ask for references from commercial projects in Dakota County or the south metro with similar building types and scale. A contractor who has only done residential shingle work in Farmington is not prepared for a 15,000-square-foot flat membrane reroofing project. Check references thoroughly — call them, and ask specifically about timeline adherence, crew professionalism, and warranty claim responsiveness.

Local permit knowledge. Farmington operates under Dakota County permit requirements and the Minnesota State Building Code. A contractor unfamiliar with local permitting will create delays. Ask how many commercial permits they have pulled in Farmington or Dakota County within the past two years.

Commercial Roofing Systems Deep Dive: Choosing the Right Membrane for Farmington Buildings

Minnesota’s climate is genuinely punishing for commercial roofing systems. The combination of deep freeze, rapid spring thaw, heavy summer rainfall, and hail exposure creates conditions that test every membrane type differently. Understanding those differences is essential for Farmington building owners making long-term roofing investments.

TPO (Thermoplastic Polyolefin)

TPO is currently the dominant commercial flat roofing membrane in the Twin Cities market, and for good reason. It offers excellent heat-weld seam strength, good UV reflectivity (important for Minnesota’s summer energy costs), and strong resistance to the thermal cycling that damages older membrane systems. TPO is available in 45-mil, 60-mil, and 80-mil thicknesses — with thicker membranes offering better puncture and hail resistance. For Farmington’s retail and light industrial buildings, 60-mil TPO with fully adhered or mechanically attached installation over polyiso insulation is a common and highly cost-effective specification.

TPO has one vulnerability in Minnesota’s climate: seam failure at extremely low temperatures if the membrane was improperly welded. The difference between properly factory-trained installers and casual TPO applicators is most visible at seam quality. Sellers’ crews are trained on TPO seam welding to manufacturer specifications — a detail that determines whether a 20-year warranty remains valid.

EPDM (Ethylene Propylene Diene Monomer)

EPDM rubber membranes have been used on commercial buildings for over 50 years and remain a strong choice for certain Farmington building types. EPDM performs exceptionally well in cold temperatures — it stays flexible at -40°F — making it particularly appropriate for buildings where roof access for maintenance is limited and long-term durability without intervention is the priority. EPDM is typically less expensive than TPO on a per-square-foot basis, though its darker color absorbs heat rather than reflecting it, which can increase summer cooling loads.

For Farmington agricultural and industrial buildings where thermal performance is less critical than durability and upfront cost, fully adhered EPDM over polyiso insulation remains a legitimate long-term choice. Sellers installs both ballasted and fully adhered EPDM systems.

Modified Bitumen

Modified bitumen is a two-ply system that offers outstanding puncture resistance and excellent waterproofing performance on roofs with higher-than-average foot traffic (HVAC servicing, rooftop equipment, etc.). The top ply is typically granule-surfaced, providing UV protection and a surface that holds up under maintenance foot traffic. For Farmington commercial buildings with multiple rooftop HVAC units, exhaust fans, or other penetrations that require frequent service, modified bitumen is often specified because of its resilience.

Modified bitumen requires torch application or cold-process adhesive — both of which demand experienced crews. Improperly torched modified bitumen presents fire risks during installation and long-term blister or delamination problems.

Standing-Seam Metal

For Farmington’s newer commercial construction — particularly agricultural-adjacent warehouses, automotive-related commercial buildings, and multi-use facilities along the city’s developing commercial corridors — standing-seam metal roofing is increasingly specified. Metal offers the longest potential service life (40-70 years), excellent resistance to hail and wind, and compatibility with rooftop solar installations. The higher upfront cost is offset by dramatically lower lifecycle maintenance costs compared to membrane systems.

Sellers installs standing-seam metal in Galvalume, painted steel, and aluminum specifications. Metal roofing on commercial buildings in Farmington typically requires coordination with structural engineering to confirm the building’s load capacity for the chosen panel weight and profile.

Roof Coatings and Restoration

For Farmington commercial buildings with existing membrane roofs that have serviceable substrate but weathered surfaces, silicone or acrylic roof coatings can extend membrane life by 10-15 years at 25-40% of full replacement cost. Sellers evaluates existing roof conditions using visual inspection and, where warranted, infrared moisture scanning before recommending restoration versus replacement. Not every roof is a good coating candidate — widespread moisture intrusion, substrate rot, or failed seams require full replacement — but for the right building, coating programs represent significant capital preservation.

According to the National Roofing Contractors Association (NRCA), proper maintenance and timely coating applications are among the most cost-effective strategies for extending commercial roof life in northern climates.

Farmington’s Commercial Building Stock and Climate Considerations

Farmington (ZIP codes 55024) sits in northern Dakota County, bordered by Lakeville to the north and Vermillion Township to the south. The city’s population has grown from roughly 12,000 in 2000 to over 24,000 today, driven by its location along US-3 and Cedar Avenue and its relative affordability compared to first-ring suburbs.

That growth has generated a diverse commercial building inventory. Along 160th Street and Pilot Knob Road, retail and restaurant strip centers built in the 2000s and 2010s are now reaching the end of their original roof service lives — many of these buildings carry 20-year-old TPO or modified bitumen that needs evaluation and likely replacement in the next 5-7 years. The Farmington Business Park and industrial nodes near the Farmington Airport (a private-use facility) have a mix of metal and membrane commercial roofs that serve manufacturing, distribution, and agricultural-support tenants.

The city’s public infrastructure — Farmington High School, the district’s elementary and middle schools, city hall, and the Dakota County Library branch — represents significant public-sector roofing investment. These projects are subject to prevailing-wage requirements and MBE/DBE participation goals, making union-signatory, certified minority contractors like Sellers not just eligible but strategically preferred.

From a climate perspective, Farmington experiences the full range of Dakota County weather: average annual snowfall of 45-55 inches, ground-freeze penetrating 48+ inches, summer high temperatures regularly exceeding 90°F, and hail events that track through the area multiple times per decade. The Minnesota Climatology Office at the DNR Climate Applications documents the region’s precipitation patterns, which show persistent heavy rainfall events in May-June that are particularly demanding for commercial drainage systems. Any commercial reroofing project in Farmington should include a drainage adequacy assessment — older roofs often have undersized or clogged interior drains that will fail under modern precipitation intensities.

Commercial building owners in Farmington should also consider energy code compliance. Minnesota’s current commercial energy code (based on ASHRAE 90.1) specifies minimum insulation R-values for commercial roofing assemblies. Reroofing is often the most cost-effective opportunity to bring a building into compliance and reduce long-term energy costs — and contractors like Sellers can help owners document insulation upgrades for utility rebate programs through Xcel Energy or Dakota Electric.

Commercial Roofing Costs in Farmington (2026)

Commercial roofing pricing in Farmington varies significantly by system type, building configuration, existing conditions, and project scope. The following ranges reflect market conditions as of 2026 for Dakota County commercial projects:

TPO Single-Ply (60-mil, mechanically attached, over existing substrate):
$6.50 – $9.00 per square foot installed. For a typical 10,000 sq ft retail building, expect $65,000 – $90,000 before drainage modifications or edge metal upgrades.

TPO Single-Ply (fully adhered, new construction or tearoff/replace):
$8.50 – $12.00 per square foot installed. Full tearoff of existing membrane adds $1.50 – $2.50/sq ft.

EPDM (fully adhered, 60-mil):
$6.00 – $8.50 per square foot installed. EPDM is generally slightly less expensive than comparable TPO but offers less reflectivity.

Modified Bitumen (2-ply torch-down, granule cap):
$7.50 – $11.00 per square foot installed. Price varies significantly based on the number of penetrations and rooftop equipment requiring flashing work.

Standing-Seam Metal Roofing:
$14.00 – $22.00 per square foot installed. Higher upfront cost; dramatically lower 30-year lifecycle cost than membrane systems.

Silicone or Acrylic Roof Coating (restoration):
$2.50 – $4.50 per square foot applied (including prep and primer). Cost-effective option when existing substrate is in good condition.

Additional cost considerations:
– Polyiso insulation upgrades: $1.50 – $3.00/sq ft depending on R-value target
– Interior drain replacement: $800 – $2,500 per drain
– Permitting: Farmington commercial permits vary by project value; budget $500 – $2,000 for most reroofing scopes
– Prevailing-wage premium on public projects: typically 10-20% above standard commercial pricing

Sellers Roofing provides detailed written estimates within a reasonable timeline of site inspection. All estimates include itemized material specifications, labor scope, warranty terms, and permit fees. Call (651) 703-2336 for a no-obligation assessment of your Farmington commercial roof.

What to Expect: The Commercial Roofing Process with Sellers

Commercial roofing projects follow a structured process that differs meaningfully from residential work. Here is what Farmington building owners can expect when working with Sellers Roofing Company:

Step 1: Initial Inquiry and Same-Day Callback
Contact Sellers by phone at (651) 703-2336 or through the website contact form. The same-day callback commitment means a qualified team member will reach out within business hours to discuss your project scope, timeline needs, and any immediate concerns (active leaks, storm damage, etc.).

Step 2: Site Assessment and Condition Report
A Sellers project manager will visit the property to conduct a thorough roof inspection. For commercial roofs, this includes visual membrane assessment, seam integrity check, drain and scupper evaluation, edge metal inspection, and penetration flashing review. Where moisture infiltration is suspected, infrared scanning may be recommended.

Step 3: Specification and Bid Development
Based on the inspection findings, Sellers will develop a detailed project specification and written bid. For public-sector projects in Farmington, this includes prevailing-wage labor rates, MBE/DBE documentation, and any required bid bond or performance bond specifications.

Step 4: Contract Execution and Permitting
Once the contract is signed, Sellers pulls all required permits from the City of Farmington and coordinates pre-construction submittals with the membrane manufacturer if a NDL warranty is being specified.

Step 5: Mobilization and Installation
Union crews mobilize according to the agreed project schedule. Commercial projects typically include a pre-construction meeting with the building owner or facility manager to review logistics, daily work hours, access points, and communication protocols. Sellers coordinates directly with tenants or building occupants to minimize disruption.

Step 6: Inspection, Warranty, and Closeout
On project completion, Sellers conducts a final walk-through with the building owner, facilitates manufacturer inspection for NDL warranty registration, and provides all project documentation including as-built drawings, warranty certificates, and permit close-out records.

Frequently Asked Questions

Related Reading

Get a Free Commercial Roofing Estimate in Farmington

Sellers Roofing Company is ready to assess your Farmington commercial property and deliver a detailed, no-obligation estimate. Whether you manage a retail strip center, an industrial warehouse, a school district building, or a multi-tenant office property, the Sellers team brings the union labor, MBE/DBE credentials, and manufacturer certifications your project demands.

Call (651) 703-2336 — same-day callback guaranteed.

Or submit an inquiry through the contact form at roofingexpertsstpaul.com. A project manager will reach out promptly to schedule your site assessment.

Sellers Roofing Company
801 Transfer Rd, Unit 05
Saint Paul, MN 55114 (Midway)
Founded 2017 | MBE/DBE Certified | Union Signatory | BBB A+

Extended Commercial Roofing Reference for Farmington Property Owners

Commercial Roofing System Selection Framework

Selecting the right commercial roofing system for a Farmington property requires methodical evaluation rather than defaulting to the least expensive option. The following framework guides the selection process:

Substrate evaluation first. Before specifying a new system, evaluate the existing substrate. Is the existing insulation wet or dry? What is the condition of the structural deck? Is there one existing layer of roofing or two (affecting re-cover eligibility)? Sellers Roofing provides moisture scanning and core sampling as part of the commercial assessment process to answer these questions objectively.

Match system to building use. TPO is the leading specification for most Farmington commercial buildings — reflective, heat-weldable seams, strong cold-temperature performance. EPDM is preferred for replacement projects on older buildings where system compatibility and budget favor a rubber membrane. Modified bitumen is the specification for complex roof geometries with many custom flashings. Metal roofing is appropriate for industrial and agricultural structures. No single system is right for every building.

Calculate total cost of ownership. The lowest installed cost rarely produces the lowest long-term cost. A properly maintained 60-mil TPO system with NDL warranty coverage at $11/sq ft and a 25-year service life is less expensive over time than a 45-mil TPO at $7/sq ft with a 14-year service life requiring full replacement. Sellers provides total cost of ownership analysis for commercial clients on request.

Verify warranty compliance requirements. If your building has an active manufacturer warranty, verify what maintenance and repair compliance the warranty requires. NDL warranty maintenance programs typically require documented annual inspections by a certified contractor. Non-compliance can void coverage. Sellers offers maintenance inspection programs for Farmington commercial clients with active manufacturer warranties.

Navigating Commercial Roofing Bids in Farmington

When soliciting commercial roofing bids for a Farmington property, the ability to compare bids accurately requires that all bids specify the same scope. Here is what to require in every commercial bid:

Named manufacturer and product. “TPO membrane” is not a specification. “Carlisle Sure-Weld 060 TPO, mechanically fastened” is a specification. All bids should name the manufacturer and product so you know exactly what you are comparing.

Attachment method. Mechanically fastened, fully adhered, and induction-welded TPO installations have different performance characteristics and different costs. Specify the same attachment method across all bids for accurate comparison.

Insulation specification. The R-value, insulation type (polyiso, EPS, mineral board), and attachment method (adhered, mechanically fastened, or combination) should be identical across comparable bids.

Warranty structure. NDL warranties from the manufacturer provide broader protection than standard material-only warranties. All bids should specify the warranty term and structure. Ask specifically whether each bidder is certified by the named manufacturer to issue the specified warranty.

Labor compliance documentation. For public or prevailing wage projects in Farmington, ask all bidders to confirm wage compliance in writing and provide documentation of the applicable certifications. Sellers Roofing can provide this documentation immediately upon request.

Farmington Commercial Roofing Frequently Asked Questions (Supplemental)

Q: What causes ponding water on Farmington commercial roofs?

Ponding water — water that remains standing more than 48 hours after rainfall — is caused by insufficient structural slope, inadequate tapered insulation design, clogged internal drains, or settled/compressed insulation that has created low spots. Ponding water is the leading cause of premature commercial roof failure in Minnesota and is specifically excluded from many manufacturer warranties as a pre-existing condition. Sellers’ commercial assessments always evaluate drainage as a first priority.

Q: What is the difference between a commercial roof inspection and a moisture scan?

A visual inspection assesses surface conditions — membrane integrity, seam condition, flashing detail, penetration sealing. A moisture scan uses either infrared thermography or nuclear moisture meters to detect wet insulation beneath the membrane surface that is not visible in a standard visual inspection. Wet insulation dramatically accelerates membrane aging and must be removed and replaced. For any re-roofing decision, moisture scanning provides the objective data needed to determine whether re-cover is feasible or full tear-off is required.

Q: Can Sellers Roofing provide emergency commercial repairs in Farmington at night or on weekends?

Yes. Commercial emergencies — active leaks, storm-damaged roofing, failed seam sections — can occur at any time. Call (651) 703-2336 for emergency response coordination. Sellers deploys emergency crews for temporary sealing and protective measures as quickly as logistically possible. Emergency response documentation also establishes the timeline of protective measures for insurance purposes.

Call (651) 703-2336 today for a free commercial roofing consultation in Farmington. Same-day callback, no obligation.