About Siplast

An Introduction to the Industry Leader in SBS-modified Bitumen


The Siplast story of uncompromising quality and commitment to our customers begins over half a century ago with an innovation that would change the commercial roofing and waterproofing industry. In the late 1960s, Siplast Research and Development, working in conjunction with Shell Chemical of Europe, developed SBS (styrene-butadiene-styrene) modified bitumens. We found that by properly modifying asphalt with SBS, we could produce a highly durable elastomeric blend with exceptional elongation/recovery properties over a wide range of temperatures.

There are Siplast roofs applied in the early years of our SBS blend that are still in service today. Since then, Siplast Engineered Roof Systems have been applied over all types of deck constructions, in the extremely varied weather conditions of more than 40 countries. That performance history has helped us earn our reputation as a leader in the development and manufacture of the world’s most advanced roofing and waterproofing systems.


Complete Roofing and Waterproofing Solutions


Siplast believes that no one product is appropriate for every use. Different conditions require different solutions. So, in addition to SBS-modified bitumen roofing materials, Siplast manufactures a line of polymethyl methacrylate (PMMA) liquid resin products for roofing and waterproofing applications. The products offer the application convenience of liquid-applied systems while meeting Siplast’s uncompromising performance standards.

Siplast is the only commercial manufacturer to offer a roof system package that combines SBS-modified bitumen membranes with the added benefits of lightweight insulating concrete. Siplast's SBS-modified bitumen roof membranes have a long performance history over lightweight insulating concrete. Our experience has shown that the insulation's encapsulated design provides a stable, monolithic surface for the roof membrane system. It has also demonstrated that the relatively high density of Siplast Lightweight Insulating Concrete can positively affect membrane life by impeding extreme temperature fluctuations and the resulting thermal stresses that can cause membrane fatigue.

Used together, Siplast SBS-modified bitumen roof membranes and Siplast Lightweight Insulating Concrete Systems result in a longer lasting roof. And, since Siplast Lightweight Insulating Concrete Systems are reusable, significant cost savings over the life of the building can be realized.