Commercial Roofing Solutions

Transforming innovation into world-class roofing solutions for decades

For over half a century, Siplast has been at the forefront of engineered commercial roofing systems technology. From partnering with Shell Chemical of Europe on the industry-changing development of SBS (styrene-butadiene-styrene) modified bitumen, to the development of innovative roof solutions to help you meet your environmental and sustainability goals, Siplast is with you every step of the way. We have consistently fused the best in technology and technique with a philosophy of close, creative partnership that allows us to understand your vision from the inside - and to help make it a reality.

SBS-Modified Bitumen Systems

Siplast's SBS-modified bitumen blend formulation allows exceptional elongation and recovery properties over a wide range of temperatures. Our high-performance, two-ply Paradiene and Veral roof systems are trusted solutions for commercial buildings.
Learn More
PMMA Liquid-Applied Systems

Parapro Roof Membrane and Parapro 123 Flashing Systems offer the benefits of PMMA technology for roofing applications. The science of PMMA provides exceptional performance advantages and faster cure times than polyurethane and polyester systems.
Learn More
Single-Ply Systems

Parasolo Roof Systems are best-in-class single-ply solutions that come with Siplast's service and product engineering. Available in PVC, PVC KEE, and TPO technologies, Parasolo’s high performance single-ply option is well-suited for warehouses, office space, retail facilities, and low-traffic roofs.
Learn More
Low-Odor STP Liquid-Applied Systems

Siplast’s Paraflex System is built on silane terminated polymer (STP) chemistry, has a low odor signature, and is low VOC and isocyanate-free. Paraflex is suitable for project circumstances that make the application of conventional roofing sheets difficult.
Learn More

Spend time caring for the community you serve. Not your roof.

The last thing a hospital needs to be worried about is its roof. At Seattle's Swedish Hospital, Siplast helped provide peace of mind with a state-of-the-art roof system to protect the 200,000+ yearly patients and sensitive equipment of this world-class acute-care medical facility — allowing medical teams to concentrate on the most important thing: the health of their patients.

Read about the Swedish Issaquah Hospital project

Additional Resources

Siplast systems are installed exclusively by Siplast Select Contractors

Siplast Roofing, Waterproofing, and Lightweight Insulating Concrete Systems are installed exclusively by Siplast Select Contractors. These independent roofing professionals are experienced in high quality installation methods using the latest Siplast technologies.*
See Contractor Resources
Video Library

Take a look around our selection of videos for an introduction to Siplast, overviews of our products, as well as educational and instructional videos on roofing technology, application techniques, roof maintenance, and installation best practices.
View All

^* Contractors enrolled in Siplast certification programs are not employees or agents of Siplast, and Siplast does not control or otherwise supervise these independent businesses. Contractors may receive benefits from Siplast for participating in the program and offering Siplast enhanced warranties and guarantees, which require the use of Siplast products.

Roofing Solutions

Transforming innovation into world-class roofing solutions for decades

SBS-Modified Bitumen Systems

PMMA Liquid-Applied Systems

Single-Ply Systems

Low-Odor STP Liquid-Applied Systems

Spend time caring for the community you serve. Not your roof.

Additional Resources

Siplast systems are installed exclusively by Siplast Select Contractors

Video Library

Help and Support

Find a Representative

Contact Us

Submit a Claim