Single-Ply Roofing Systems for Commercial Buildings
Efficient. Lightweight. Proven for Flat and Low-Slope Roofs
Single-ply membranes are among the most popular and trusted roofing systems for commercial buildings — and for good reason. Lightweight, cost-effective, and quick to install, these systems provide durable, energy-efficient protection for flat and low-slope structures.
At Port Roofing, we install all major single-ply systems, including TPO, EPDM, and PVC — with expert guidance to match your building type, climate, and performance goals across Texas and the Gulf Coast.
What Are Single-Ply Systems?
Single-ply membranes are flexible, waterproof roofing materials installed in one or two layers, typically over insulation and a structural deck. They’re best suited for buildings with flat or gently sloped roofs.
We install:
- TPO (Thermoplastic Polyolefin)
- EPDM (Ethylene Propylene Diene Monomer)
- PVC (Polyvinyl Chloride)
These systems are commonly used on commercial, institutional, and industrial roofs due to their performance and low lifecycle cost.
Mod-Bit vs. Single-Ply Roofing
| Feature | Modified Bitumen | Single-Ply Systems |
|---|---|---|
| Waterproofing Layers | Multi-layer (redundant) | Single membrane |
| Foot Traffic Resistance | Excellent | Moderate to good |
| Flexibility in Install | High (multiple methods) | Moderate |
| Cost | Mid-to-high | Low to mid |
| Repairability | Easy and localized | Requires welding or adhesives |
| Best For | High-abuse or complex roofs | Energy efficiency / fast installs |
Benefits of Single-Ply Roofing
Easy to transport, install, and weld — great for large buildings.
TPO and PVC membranes reflect heat, reducing HVAC loads and lowering cooling costs.
Seams are hot-air welded (TPO, PVC) or adhered (EPDM) for watertight integrity.
Competitive upfront cost with proven performance and long-term value.
When properly installed and maintained, single-ply roofs require minimal upkeep.
Choosing the Right Membrane
Each system has strengths — and we’ll help you choose what fits your roof best.
TPO Roofing
Bright white surface reflects sunlight
Resistant to UV, algae, and chemicals
Ideal for warm climates and energy-conscious buildings
EPDM Roofing
Known as “rubber roofing”
Excellent resistance to weather and hail
Best for colder regions and low-traffic commercial roofs
PVC Roofing
Exceptional chemical resistance
Strong seams for watertight integrity
Common in restaurants, labs, factories, and buildings with roof exhausts or grease output
Great for These Building Types
- Retail centers & plazas
- Warehouses & logistics hubs
- Schools & universities
- Offices & medical complexes
- Government & municipal facilities
- Restaurants & food service environments (PVC)
Our Installation Process
We’ll walk you through the options and deliver a system that meets both performance standards and manufacturer warranty requirements.
See How a Single-Ply System Could Work for You
Whether you’re building new or re-roofing an aging flat roof, a single-ply membrane could be the right fit. Let’s review your roof and build a solution that lasts.
