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Commercial roofing work in North Iowa

Owner-Operated Since Day One

Built on Hard Work.
Backed by Results.

A-1 Roofing Services is a Mason City-based commercial and industrial roofing contractor. When you call, you get David — the owner, on your roof, doing the work. No subcontractors, no runaround.

David Borntreger, owner of A-1 Roofing Services

Our Story

The Owner Shows Up. Every Time.

David Borntreger started A-1 Roofing Services because he saw a gap in the North Iowa market: business owners who needed commercial roofing done right were getting passed off to crews they'd never meet, managed by companies more focused on volume than quality.

So he built something different. At A-1, David is on every job site — not just signing off from the office, but physically on your roof, assessing the problem and directing the work. That owner-on-site accountability changes everything about how a project gets done.

We serve Mason City, Clear Lake, Charles City, and communities across North Iowa and Southern Minnesota. Flat roofs, metal roofing, TPO, EPDM, restoration coatings, emergency repairs — if it's a commercial or industrial roof, we handle it.

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By the Numbers

Proven in the Field

5.0★ Average Google Rating
4 Verified Reviews
90mi Service Radius
24/7 Emergency Response

What We Stand For

The Foundation of Our Work

Three principles guide every project, every inspection, and every conversation we have with a client.

Honesty First

We tell you exactly what your roof needs — not what maximises our invoice. If a repair will do the job, we say so. If replacement is genuinely necessary, we'll show you why.

Quality Craftsmanship

We don't rush work to hit volume targets. Every seam, every flashing detail, every penetration gets proper attention. A roof we put on should still be performing a decade from now.

Accountability

The owner is on every job. If something isn't right, David is the person who fixes it — not a customer service line. That direct accountability is the reason our clients come back.

Where We Work

Serving North Iowa & Southern Minnesota

Based in Mason City, we cover a 90-mile radius — from Clear Lake and Charles City to Albert Lea and Austin in Southern Minnesota. If your building has a flat, low-slope, or metal roof and you're within range, we can help.

  • Mason City & Clear Lake, IA
  • Charles City & Hampton, IA
  • Garner & Forest City, IA
  • Albert Lea & Austin, MN
  • Surrounding communities within 90 miles
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Commercial roofing project across North Iowa
Commercial roofing project in North Iowa

No Pressure. No Obligation.

Schedule Your Free Roof Inspection

David will inspect your roof, document every issue, and give you a straight read: repair, restore, or replace. Written report included. No sales pressure, ever.

No obligation. No pressure. Just a straight read on your roof.

Request Free Inspection

Or call David directly (24/7)

(641) 381-3241