PVC, KEE and TPO Single-Ply Systems

Innovation in roofing technology meets decades of expertise in roofing product chemistry. Siplast Single-Ply Roof Membranes, including PVC, KEE, and TPO, are designed to meet the highest standards of performance, durability, and reflectivity. At Siplast, we understand that the heart of a premium roofing system lies in its chemistry, and that's why we've meticulously engineered each membrane to provide top of the line protection and longevity for your building.

A technical drawing showing a cross-section of a Siplast roof system and a pipe penetration, with a layer of "Inverted Parasolo TPX Fleece-Back" on top.

Detail drawing library

Looking for more in-depth information about the assembly process? This video provides a comprehensive overview, but for precise measurements, material specifications, and intricate connections, please consult the Detail Drawings Library. You'll find all the critical data needed to ensure a compatible assembly.

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PVC roofing materials being adhered with glue

Parasolo PVC KEE

For projects requiring enhanced durability and flexibility, our Parasolo KEE (Ketone Ethylene Ester) membranes are the solution. KEE's unique chemistry provides exceptional protection against weathering, chemicals*, and UV exposure, while maintaining its flexibility over a broad range of temperatures. Siplast Parasolo KEE membranes combine the best of both worlds—outstanding toughness and exceptional flexibility – making them the perfect choice for complex roof designs and challenging environments.

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Siplast roofers induction welding PVC materials

Parasolo PVC

Our PVC (Polyvinyl Chloride) membranes are built on a foundation of robust chemical engineering. PVC's inherent flexibility and protection against UV radiation, chemicals*, and fire** make it an ideal choice for a variety of roofing applications. The advanced formulation of our PVC membranes helps ensure long-term performance, even in demanding environments. With Siplast Parasolo PVC, you can expect a roof that stands the test of time, offering both strength and flexibility where it’s needed most.

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Roofing membrane being mechanically-attached to a commercial roof

Parasolo TPX

Our TPO (Thermoplastic Polyolefin) membranes are the epitome of modern roofing technology. Siplast's advanced TPO chemical formulation delivers excellent heat-weldability, reflectivity, and durability. TPO membranes are also formulated with Red List free ingredients, making them a suitable choice for builders looking to meet certain sustainability goals.

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* Siplast warranties and guarantees do not provide coverage against exposure to chemicals. Refer to siplast.com for more information on warranty and guarantee coverage and restrictions.

† In Class A E108 testing, specific Parasolo PVC roofing assemblies have demonstrated the capability to extinguish even when the flame source remains applied to the assembly.

Frequently asked questions

What are the the benefits of reflective roofs?

TPO roofs reflect sunlight and heat, helping to reduce rooftop temperatures, potentially helping to lower interior building temperatures.

What are the differences between TPO and EPDM?

The choice between EPDM and TPO roofing depends on a number of factors, including climate, budget, and level of durability required. For instance, EPDM is known for its durability and flexibility, while TPO performs extremely well in resisting punctures and impacts, but its effectiveness is heavily influenced by factors such as membrane thickness and installation method. While EPDM is a low-cost material, TPO is also a low-cost option, but it reflects UV rays and heat, so it is a suitable choice for building owners looking for energy efficiency.

Can hail damage a TPO roof?

Yes, like any roofing system, TPO roof membranes can be damaged by severe hail storms. However, Siplast offers specialized systems designed to provide protection against hail impacts. When combined with the proper insulation system and attachment methods, our TPO membranes are eligible for guarantee coverage for hail up to 4 inches in diameter*. This helps ensure that your roof remains reliable and protected, even in the face of severe hail conditions. For more information on our systems designed for hail conditions, please contact us to discuss a solution for your project.

Is a PVC roof the same as a TPO?

No, they are not the same. PVC and TPO are both thermoplastic single-ply roof membranes that offer similar benefits such as reflectivity, easy installation, and durability, but they each have different material compositions. TPO is made of ethylene propylene rubber and polypropylene, while PVC is composed of ethylene and chlorine. As different chemistries are used to create PVC and TPO membranes, they differ in flexibility and other properties.

Can you walk on PVC roofing?

Yes, PVC roofing is able to withstand moderate foot traffic. However, heavy pedestrian traffic may reduce the service life of a PVC roof. Siplast Parasolo PVC Walkways can be installed in areas of the roof where high pedestrian traffic is anticipated, as a protective course applied over the PVC membrane.

* Siplast warranties and guarantees do not provide coverage against hail or punctures except where additional puncture resistance coverage is purchased for eligible systems. Contact Siplast for more information. Refer to applicable warranty or guarantee for complete coverage and restrictions