Our commercial division has installed every major flat roofing system on Essex County buildings. Here is our honest assessment of what works best based on real-world performance data.
Performance Data from Our Projects
Tracking warranty claims and service calls across our Essex County commercial portfolio reveals clear performance tiers. TPO installations from the past 15 years average less than 1 service call per year. PVC performs similarly with slightly fewer seam-related issues. EPDM averages 1.5-2 service calls per year, primarily for seam maintenance. Modified bitumen falls between EPDM and TPO.
The energy data is equally clear. Buildings that switched from EPDM to TPO report 15-25% cooling cost reductions in Essex County. One Newark office building we re-roofed with TPO in 2018 documented $4,200 in annual cooling savings, paying back the material premium in under 3 years.
Common Specification Mistakes
The most common mistake Essex County building owners make is choosing based on installed cost alone. The cheapest bid often uses thinner membrane, lower-grade insulation, and minimal warranty coverage. A 45-mil TPO with a 10-year warranty is not comparable to a 60-mil TPO with a 20-year warranty, even though both are "TPO."
Another common mistake is ignoring the insulation component. Many Essex County commercial buildings have inadequate roof insulation by current code standards. Adding insulation during re-roofing costs $1-$3/sq ft but delivers ongoing energy savings that dwarf the investment. We specify minimum R-30 for all commercial re-roofing projects.
Our Default Recommendations
Standard commercial building: 60-mil TPO with polyiso insulation to R-30 minimum, fully adhered system. Restaurants and food service: 60-mil PVC with the same insulation specification. High-traffic mechanical areas: modified bitumen walk pads over TPO or PVC field membrane. Budget-sensitive projects: 60-mil EPDM with fully adhered seam reinforcement.
We do not compromise on membrane thickness. 45-mil products save $0.50-$1/sq ft but lose years of service life. For a 10,000 sq ft roof, that is $5,000-$10,000 in savings versus $20,000-$30,000 in reduced lifespan. The math always favors premium thickness.
Our commercial roofing recommendations are data-driven, based on performance tracking across hundreds of Essex County installations. TPO with premium insulation is the optimal choice for most applications.