
Thermoplastic Single-Ply Roofing Solutions and Benefits
Understanding Single-Ply Roofing
Advantages of Single-Ply Roofing
TPO and PVC membranes each offer its own advantages. Additionally, the polymer content within a single-ply membrane influences its mechanical properties, durability, and performance. Regardless of which type of single-ply membrane is used, overall, single-ply systems can be a reliable roofing solution for many commercial buildings.
Explore Siplast Parasolo Single-Ply Systems
PREMIUM | ||||
TPO (Thermoplastic Olefin) membranes |
TPX |
PVC (Polyvinyl Chloride) membranes |
KEE |
|
Key material |
Thermoplastic Polyolefin |
Thermoplastic Polyolefin Xtreme with advanced UV and weathering resistance
|
Polyvinyl Chloride | Polyvinyl Chloride with DuPont's™ Elvaloy® Ketone Ethylene Ester |
Main characteristic |
Durable Efficiency | High-Performance | Efficient & Effective | Premium |
Performance |
Seam welding and long-term weather protection |
Seam welding and long-term weather protection |
Protection against exposure to chemicals, oils and greases 4 | Meets ASTM D3273 3 [NOTE: This standard applies to resistance against algae growth] |
Thickness options |
45, 60, and 80-mil | 50, 60, and 80-mil | 50, 60, and 80-mil | 50, 60, and 80-mil |
3 Siplast warranties and guarantees do not provide coverage against algae or other biological growth. Additional requirements apply. Contact Siplast for more information. Refer to our Guarantee Guides here for more information on warranty and guarantee coverage and restrictions.
4 Values stated are approximate and subject to normal manufacturing variation. These values are not guaranteed and are provided solely as a guide.
Considerations for Single-Ply Roofing
A building's location, function and other characteristics, such as roof access points, drainage, and local building codes, all play a significant role in determining which single-ply roofing system would be the best option.

Adapting to Modern Roofing Demands: Advantages of a Hybrid Roof System
3 Siplast warranties and guarantees do not provide coverage against exposure to chemicals. Refer to our Guarantee Guides here for more information on warranty and guarantee coverage and restrictions.
4 Energy cost savings are not guaranteed and the amount of savings may vary based on climate zone, utility rates, radiative properties of roofing products, insulation levels, HVAC equipment efficiency and other factors.
Frequently Asked Questions
What should I consider regarding the durability of single-ply roof membranes?
Single-ply roof membranes serve as the primary protective layer for the roof. While they are designed for durability, heavy foot traffic or activities on the roof can wear on the surface over time. If your roof is expected to experience heavy foot traffic or other intensive use, you may want to consider a multi-ply system. In these systems, the primary roof protection lies beneath a finished surface ply, offering enhanced durability for high-traffic areas.
Can you walk on a single-ply roof membrane?
Yes, single-ply roof systems can be walked on. However, depending on the type and volume of foot traffic, a single-ply roof can be supplemented with further protection, such as using a thicker 80-mil membrane or walkway protection pads. If the roof system is expected to get routine or frequent traffic, then a multi-ply SBS-modified bitumen roof system may be a more suitable solution.
What is the difference between fleece-back and smooth membranes?
Most single-ply membranes come with one of two types of surface backings - smooth or fleeceback. While fleeceback membranes can provide enhanced durability, they also have certain installation restrictions. Ensure you are choosing the right membrane surfacing type for your application. If you have questions contact a Siplast representative to be connected to Design Services.
What is the typical warranty or guarantee duration for single-ply roofs?
A single-ply roofing system may be covered under a manufacturer's warranty or guarantee for anywhere from 15-35 years, depending upon the thickness of the membrane and the method of attachment5.
