If you own or manage a commercial property in the Inland Empire, choosing the right flat roofing system is a major decision. The three most common options — TPO, PVC, and built-up roofing (BUR) — each have unique advantages for Southern California’s climate. Here’s how they compare for Inland Empire businesses.
TPO Roofing (Thermoplastic Polyolefin)
TPO is the fastest-growing flat roofing material in the Inland Empire, and for good reason:
Pros
- Energy efficient: White TPO membranes reflect up to 87% of solar radiation, reducing cooling costs significantly in our hot summers
- Cost-effective: Generally the most affordable single-ply option at $4-$8 per square foot installed
- Durable: Resistant to UV rays, chemical exposure, and punctures
- Heat-welded seams: Creates a watertight bond stronger than the membrane itself
Cons
- Lower-quality TPO can shrink or crack over time in extreme heat
- Limited color options (white, gray, tan)
- 15-20 year lifespan, shorter than some alternatives
PVC Roofing (Polyvinyl Chloride)
PVC has been a trusted commercial roofing material for decades:
Pros
- Chemical resistance: Excellent for restaurants, industrial facilities, or any property with chemical exposure
- Fire resistance: Class A fire rating
- Durability: More puncture-resistant than TPO
- Lifespan: 20-30 years with proper installation
Cons
- Higher cost than TPO ($6-$11 per square foot installed)
- Plasticizers can leach out over time, making the membrane brittle
- Environmental concerns with PVC manufacturing
Built-Up Roofing (BUR)
The traditional workhorse of commercial roofing:
Pros
- Proven longevity: 20-30 year lifespan with multiple layers of protection
- Excellent waterproofing: Multiple layers of bitumen and reinforcing fabric create redundancy
- Fire resistance: Gravel surface provides Class A fire protection
- UV protection: Gravel or reflective coating protects the membrane from sun damage
Cons
- Heavy system — requires adequate structural support
- Messy installation (hot asphalt application)
- Higher maintenance for gravel surface
- Cost: $5-$10 per square foot installed
Which Is Best for Your Inland Empire Commercial Property?
| Building Type | Recommended System | Why |
|---|---|---|
| Office / retail | TPO | Energy savings, cost-effective |
| Restaurant / industrial | PVC | Chemical and grease resistance |
| Warehouse / distribution | TPO or BUR | Durability, lower cost |
| Multi-tenant commercial | PVC or BUR | Longest lifespan, lowest lifetime cost |
Inland Empire Commercial Roofing You Can Trust
Outer Shield Roofing installs and services commercial roofs across the Inland Empire, including Corona, Riverside, Murrieta, and Temecula. Contact us for a free commercial roof consultation. Learn more about our commercial roofing services.