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ENGAGE™ TR
Thermoplastic polyolefin roofing
Thermoplastic polyolefin roofing membrane solutions
When it comes to roofing, materials matter. Dow’s ENGAGE™ TR Polyolefin Elastomer (POE) offers an ethylene-based solution specially designed for low-sloped thermoplastic polyolefin (TPO) roofing membranes. With superior flexibility, weatherability, toughness, and weldability, ENGAGE™ TR POE enables roofing membrane systems with easy installation, longer lifetimes, and improved reliability.
Roofing solutions for TPO membranes
Learn about the advantages of using ENGAGE™ TR POEs in TPO roofing membranes.
ENGAGE™ TR POE brings to low-sloped roofing membranes across the globe. The unique olefin block-copolymer, which is used in the top and bottom layers of roofing membranes to provide exceptional performance, is an essential part of Dow’s diverse portfolio of roofing science innovations.
Roofing membranes produced with ENGAGE™ TR POE overcome the limitations of conventional polypropylene-based TPO roofing membranes. They’re tougher, more flexible and have superior UV resistance. That means easier installation, increased longevity due to weatherability and excellent hail resistance.
ENGAGE™ TR
View our product catalog for ENGAGE™ TR to find the best solutions for your needs.
Learn how unreinforced TPO roofing with ENGAGE™ TR POE outperforms Polypropylene TPO
| Roofing Mambrane Properties | ENGAGE™ TR POE | Polypropylene TPO |
| Tensile modulus | 49 MPa | 82 MPa |
| Tensile strength | 17.5 MPa | 17.0 MPa |
| Tensile strength retention after heat aging* | 85% | 30% |
| Tensile elongation retention after heat aging* | 99% | 3% |
| Loss of weight loss after 10,000 hours of UV aging** | 0.7% | 2.8% |
| Surface crack at UV radiation initiation time** | 10,000 hours | 6,000 hours |
| Membrane brittleness point (ASTM D2137) | -65°C | -45°C |
| Welding initiation temperature (welder setting at 4.5 m/min) | 320°C | 380°C |
*Based on Dow testing that compared an unreinforced roofing membrane made with ENGAGE™ TR POE with an un-reinforced roofing membrane made a polypropylene TPO at the same additive and filler formulation. Additional information available upon request.
**After 8,000-hour heat aging at 116°C per ASTM D6878
***Xenon-Arc aging at 0.7 W/(m2· nm) at 340 nm per ASTM D6878
Resource
Dow can help answer your roofing challenges with roofing membrane solutions.
Dow’s materials enable roofing durability and energy efficiency for a better tomorrow.
ANTEC study comparing polypropylene and polyethylene-based thermoplastic polyolefin waterproofing membrane.
Let’s find the perfect solution for your needs.