Commercial Roofing Solutions

Transforming innovation into world-class roofing solutions for decades -UAT Security Patch Testing

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 innovative roof solutions to help you meet your environmental and sustainability goals, Siplast has 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.

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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.
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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.
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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.
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PVC Systems

Parasolo™ PVC KEE roof systems incorporate Elvaloy®* copolymer with formulation advancements to help with weathering, algae, and chemical resistance.** Parasolo delivers a high performance single-ply option well-suited for warehouses, office space, retail facilities, and low-traffic roofs.
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UAT Security Testing

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

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* Elvaloy® is a registered trademark of DuPont™
** Siplast Guarantees do not provide coverage for algae or chemical exposure. Refer to guarantees for complete coverage and restrictions.

Paradiene 30, Cold Adhesive, SFT Adhesive or Hot Asphalt

Paradiene 30 FR are finish plies of the Siplast Paradiene 20/30 FR System. These granule-surfaced top ply, Paradiene 30, shields the base from the elements and mechanical abuse, while the base ply, Paradiene 20 absorbs roof stresses. These high performance, modified bitumen finish plies can be applied in approved Type IV asphalt, Siplast PA-311 Adhesives or SFT Adhesive.
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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

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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.*
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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.
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^* 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. Review Pro Primer E installer's guide supplement document here.

Siplast ALert

Roofing Solutions

Transforming innovation into world-class roofing solutions for decades -UAT Security Patch Testing

Security Testing

UAT Security Testing

SBS-Modified Bitumen Systems

PMMA Liquid-Applied Systems

PVC Systems

UAT Security Testing

Paradiene 30, Cold Adhesive, SFT Adhesive or Hot Asphalt

UAT Security Testing

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

UAT Security Testing

Siplast systems are installed exclusively by Siplast Select Contractors

Video Library

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