When it comes to flat or low-slope commercial roofing, single-ply membrane systems have become one of the most popular and cost-effective solutions available. But what exactly is a single-ply roof, how does it work, and is it right for your building?
In this guide, we’ll explain everything you need to know about single-ply roofing, including its benefits, lifespan, installation, and cost.
What is Single-Ply roofing?
Single-ply roofing is a lightweight, flexible roofing membrane designed for flat or low-slope roofs. It consists of a single layer of synthetic material—usually rubber or thermoplastic—that provides waterproofing and UV protection.
The two main types of single-ply membranes are:
- TPO (Thermoplastic Olefin) – Durable, energy-efficient, and heat-weldable
- EPDM (Ethylene Propylene Diene Monomer) – A rubber membrane known for flexibility and resistance to weathering
- PVC (Polyvinyl Chloride) – Chemical-resistant and ideal for roofs with grease or industrial exposure
These membranes are typically applied in large rolls and either adhered, mechanically fastened, or ballasted to the roof deck.
Benefits of Single-Ply roofing
Single-ply systems offer several key advantages for commercial and industrial buildings:
- ✅ Lightweight installation – Less structural load than built-up roofing (BUR)
- ✅ Excellent waterproofing and leak protection
- ✅ Energy-efficient – Especially with white TPO or PVC membranes that reflect heat
- ✅ UV-resistant and flexible – Expands and contracts with temperature changes
- ✅ Quick installation – Minimizes business disruption
- ✅ Cost-effective maintenance – Easy to inspect and repair
- ✅ Chemical resistance – Especially PVC for restaurants or manufacturing plants
These features make single-ply systems a preferred choice for warehouses, retail centers, factories, office buildings, and more.
How long does Single-Ply roofing last?
With proper installation and routine maintenance, single-ply membrane roofs typically last:
- TPO: 20–30 years
- EPDM: 25–35 years
- PVC: 20–30 years
Longevity depends on several factors, including roof exposure, membrane thickness, installation quality, and whether regular inspections are performed.
How to install Single-Ply roofing?
Installation varies slightly by membrane type, but generally follows these steps:
- Clean and prepare the roof deck
- Apply insulation board (often polyiso or EPS)
- Install the membrane using one of three methods:
- Fully adhered – Bonded with adhesive for high wind resistance
- Mechanically fastened – Secured with screws and plates
- Ballasted – Held down by gravel or pavers (less common today)
- Seal seams using heat welding (TPO/PVC) or adhesive tape (EPDM)
- Flash penetrations and edges to ensure watertight performance
- Inspect and test for seam strength and full coverage
It’s critical that installation is performed by certified commercial roofing professionals to ensure warranty compliance and long-term performance.
How much does single-ply roofing cost?
The cost of a single-ply membrane roof depends on factors like membrane type, roof size, insulation, and installation method. On average:
- TPO: $5 – $9 per sq. ft.
- EPDM: $4 – $8 per sq. ft.
- PVC: $6 – $10 per sq. ft.
Additional factors that influence pricing:
- Roof accessibility and slope
- Number of penetrations or HVAC units
- Tear-off of old roofing system
- Warranty type (manufacturer vs. contractor)
A professional site inspection is the best way to get an accurate quote.
Contact Northeast Industrial Roof for Single-Ply Roofing
At Northeast Industrial Roof, we are specialists in TPO, EPDM, and PVC single-ply roofing systems for commercial and industrial facilities. Whether you need a full roof replacement, new construction installation, or preventative maintenance, we deliver:
- Expert installation
- Energy-efficient materials
- Manufacturer-backed warranties
- Customized solutions for your property
Contact Northeast Industrial Roof today for a free consultation on single-ply roofing solutions.
