Commercial Flat Roofing Systems in St. Louis
Durable, energy‑efficient, and code-compliant flat roof installations backed by expert service and warranties.
- Experts in Both Residential and Commercial Roofing
- Five-Star Service for Every Project
- Roof Financing Available
Ready to get your roof checked out?
Advantages of Choosing the Right Flat Roof System
Low-slope design reduces construction costs while delivering efficient drainage and interior space.
Reflective membranes (like white TPO or PVC) cut cooling expenses and extend roof life.
Robust roofing systems stand up to moisture, UV exposure, and temperature swings.
What We Offer for Commercial Roofing
- Thermoset Single‑Ply Membrane (EPDM)
- Synthetic rubber membrane designed for durability and flexibility. Available as ballasted, mechanically attached, or fully adhered.
- Lifespan: 30–50 years. Budget-friendly and ideal for cooler climates.
- White, reflective, flexible membrane with heat-welded seams. Economical and energy efficient. Can last 20–30 years.
- PVC: High-performance thermoplastic membrane resistant to chemicals, fire, and oils. Strong welds and longer expected lifespan—great for food-service or chemical-exposed rooftops.
- Multi-layer asphalt sheets reinforced with polyester or fiberglass; installed via torch-down or cold adhesive. Durable with moderate cost.
- Traditional “tar and gravel” roof built with alternating layers of felt and hot asphalt, topped with aggregate. Fire-resistant and well-suited to heavy-use surfaces.
- Includes standing-seam metal panels and green/ballasted (“protected membrane”) roof systems. Best for longevity, sustainability, or load-bearing applications.
Which Flat Roof System Fits Best for Your Building?
EPDM:
Affordable and reliable—ideal for colder climates or tight budgets.
TPO:
Balanced performance and economy with added reflectivity.
PVC:
Best chemical resistance and seam strength. Suited for demanding commercial environments.
Mod-Bit & BUR:
Strong, traditional options for heavy traffic areas or steep warranties.
BUR:
20+ year lifespan. Mod-bit: flexible installation.
Green/Metal Systems:
Premium investment for long-term resilience, cool roofing, or rooftop gardens.
Cost & Longevity
Expected Costs & Life Expectancy
Modified Bitumen / BUR: $4–$8/sq ft; lifespan ~15–20 years.
EPDM: $5–$7/sq ft; lifespan ~30–50 years.
TPO / PVC: $5.50–$9.50/sq ft; reflectivity improves energy performance; lifespan 20–30+ years.
Metal & Green Roofs: $8–$15+/sq ft; lifespan 30–50+ years.
Real Customer Feedback
Flat Roofing FAQ
EPDM and metal systems typically last longer, but TPO and PVC offer an energy-efficient balance.
Yes—we tailor each installation with substrate, drains, and insulation to provide performance and warranty compliance.
TPO/PVC use heat-welded seams; EPDM relies on adhesives or tape; BUR and mod-bit rely on overlapping and hot materials.
Why Clients Trust Us for Flat Roof Projects
We’re a local roofing company built on integrity and service. From honest inspections to flawless installations, Arrowhead delivers the quality you deserve—backed by a 10-year workmanship guarantee and fast help when storms hit.