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SBS-modified bitumen roof systems
SBS roof systems brochureNo one knows SBS like Siplast. Because we invented it.
In the 1960s, Siplast drove an SBS/bitumen breakthrough in commercial roofing technology. By modifying bitumen (asphalt) with styrene-butadiene-styrene polymer (SBS), the resulting roofing products offered better elongation, recovery, and durability properties compared to other existing asphaltic roofing technologies.
As the pioneer of SBS product innovation, we continue to set the bar higher—with systems that surpass evolving industry standards and high-performance solutions trusted to protect historical structures and mission-critical facilities. The secret to the superior quality of our SBS is consistency in our manufacturing process, followed by rigorous testing and quality control to ensure each batch has met our precise specifications for optimal performance, from the lab to the roof.
For the highest quality SBS, come to the source.
Superior performance. Worry-free protection. Decades of service.
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The SBS built to outperform and outlast
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Our SBS batches are tested 150 times, because the world will test your roof every day.
Siplast premium quality SBS roof systems have certain physical properties that help enable it to maintain performance over decades of service on a roof. Combining a premium bitumen with optimized levels of polymer creates a quality standard that has remained consistent for 40 years. And our unique manufacturing process ensures consistency in tensile strength, ultimate elongation, and cyclic fatigue recovery properties, for long-term performance, exceptional weather resistance, flexibility, and longevity. Siplast conducts more than 150 quality control tests on every batch of SBS source material to ensure raw material quality. The result is a range of versatile, high-performance SBS systems that surpass industry standards.
Need a flashing that's efficient?
Click here to view Parapro 123 Flashing ResinSiplast SBS systems
Siplast offers several SBS-modified bitumen roofing solutions—with a variety of thicknesses, carriers, reinforcements, and surfacings to address your specific needs. Each is engineered to Siplast standards to offer key advantages when addressing specific project challenges.
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| Paradiene® 20/30 System with Parapro flashing |
Paratech System | Veral® System | |
| Solar reflectance† | Initial: 0.74 Aged: 0.53‡ | Initial: 0.74 Aged: 0.53 | Initial: 0.87 Aged: 0.70 |
| Application options | Hot/cold applied, torch applied, self adhered & mechanically attached | Hot/cold applied, torch applied, self adhered & mechanically attached | Torch applied & cold applied |
| ASTM types | ASTM D6162‡, D6163, D6164‡ | ASTM D6163‡, D6164 | ASTM D6298 |
| CSA standard§ | A 123.23-15 | A 123.23-15 | A 123.23-15 |
| Guarantee options | 30 year | 20 year | 20 year |
*This represents only the base ply of the system.
†The fraction of solar energy that is reflected by the roof. These values are tested by the CRRC.
‡Only for cap sheets using the bright white (BW) minerals.
§CSA Group is a recognized third-party certification body and testing agency with specialized expertise.
Complete the system
Siplast SBS system enhancements
Installing SBS systems
Detail drawing library
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Why Siplast for SBS
After years of research, Siplast introduced a bitumen blend modified with a precise level of styrene-butadiene-styrene polymer—SBS—that outperformed existing asphalt blends with better elongation, durability, and recovery properties.
Featured projects
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United Nations General Assembly
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Florida State University Student Union
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SBS-modified bitumen roofing system FAQs
Siplast SBS-modified bitumen roof systems are eligible for guarantee coverage terms of up to 30 years. Reference the Siplast Paradiene® and Parafor Guarantee Guide here or contact Siplast Design Services via email at designservices@siplast.com or by phone at 855-861-6460 for additional information.
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