Flat & Low-Slope Roofing in the Twin Cities — TPO, EPDM & Modified Bitumen
Specialized systems for garages, additions, and architectural homes. Owner-supervised. MN Lic# BC809688.
Flat and low-slope roofs are common on garages, additions, and some architectural homes across the Twin Cities. They require different systems than standard sloped roofs — materials that handle standing water, thermal movement, and Minnesota's freeze-thaw cycles.
Flat Roofing Systems We Install
TPO — Thermoplastic Polyolefin
The most popular option for new flat roofing installations. TPO's heat-welded seams create a virtually seamless membrane that handles Minnesota's temperature swings exceptionally well.
- White or gray reflective membrane
- Heat-welded seams — no adhesives to fail
- Energy Star rated
- 20–30 year lifespan
EPDM — Rubber Membrane
The proven workhorse of flat roofing. EPDM (ethylene propylene diene monomer) is a black rubber membrane that has been installed successfully on residential and commercial roofs for decades.
- Extremely durable rubber construction
- Lower cost than TPO
- Excellent for low-slope residential applications
- 20–30+ year lifespan
Modified Bitumen
A multi-layer system with built-in redundancy. Modified bitumen is the traditional choice for commercial-style applications and some residential situations where a multi-ply system is preferred.
- Multi-layer redundancy
- Torch-applied or self-adhering options
- Appropriate for commercial-style residential architecture
- 20–25 year lifespan
Where Flat Roofing Is Used in the Twin Cities
These systems are the right call for a variety of residential situations:
- Detached garages with flat or near-flat rooflines
- Low-slope sections on a home that transitions to a pitched roof
- Additions and porches with shed or flat rooflines
- Commercial-style residential architecture
If your home or structure has any of these, a standard shingle system is not appropriate — and installing one is a common mistake that leads to premature failure and leaks.
Flat Roofing FAQs
Call for a free inspection. Flat roof leaks are often at seams, flashings, or drainage points. We'll find the source and give you repair vs. replacement options.
A quality TPO or EPDM system properly installed lasts 20–30 years. Poor drainage or inadequate flashing can cut that significantly — which is why installation quality matters.
Carefully, yes — but it's better to have Luis assess drainage during an inspection and install appropriate drainage solutions so you don't have to get up there regularly.
Per square foot, flat roofing systems are often comparable or slightly less — but the materials and techniques are very different. Get a free estimate for your specific situation.
Get a Free Flat Roof Inspection
Luis will identify the right system for your structure, check existing drainage, and give you a written estimate for repair or full replacement.
Get Your Free 21-Point Inspection