Sika’s latest roof membrane technology is extremely durable, and very efficient in application. It minimizes the environmental footprint and meets the highest environmental standards.

The requirements placed on roofing systems are constantly increasing. Air pollution, UV radiation, and increasingly common hailstorms all take their toll on roofs. Only products that are extremely robust and enduring can withstand the intensity of these environmental influences. Sika’s solutions meet exactly these requirements. Thanks to decades of experience, the company is leading in sustainable roofing technologies. With its offering and expertise, Sika meets the increasing expectations on the part of developers. They demand solutions that can be safely, rapidly, and efficiently processed on the building site and at the same time do not burden the environment. Complete Sika systems deliver crucial added value, including product development which, from the start, is geared toward using recycled material.

"Our latest roof membrane is even more high-performing and sustainable. This is a requirement that all our innovations meet." Patricia Heidtman, Core Technology Head Thermoplastic Systems

Closing Material Cycles

Sarnafil® AT, the latest generation of roof membranes, combines the benefits of all Sika’s roofing technologies into one. It is flexible, resilient, and durable, can be deployed in multifaceted ways as well as in all climates, and saves on raw materials. All processes have been optimized – from production of the raw materials used to energy and water consumption during the production process, and to the recycling of the material at the end of the life cycle.

Sika facilitates a significantly faster application of roof membranes.

The roof sheeting can be welded together more quickly, and membranes can be applied to angled surfaces rapidly and easily. And as the material remains flexible even at low temperatures, the membrane can even be applied in winter.

Cradle to Cradle Certified Membrane

First and Only Cradle to Cradle CertifiedTM Membrane 

Sika is the first manufacturer of roof membranes in the world to have a product certified according to the Cradle to Cradle CertifiedTM environmental label, which is based on a circular economy. The criteria met by Sarnafil® AT encompass the entire life cycle, including both health and social aspects.

The recycling of roof membranes saves resources and reduces the burden on the climate

Since 15 years already, Sika has successfully run its roof recycling program in North America. Sika roof membranes are retrieved and reprocessed at the end of their life cycles and used to manufacture new membranes. Until now, more than 36,000 tons of raw materials have been saved thanks to this program, and the CO2 footprint has been reduced. Another recycling loop is the reuse of scrap material from the production process in the fabrication of new products. Due to the high recycling proportion, Sika’s new roof membranes also meet the most rigorous requirements of the LEED seal of quality, which stands for sustainable construction worldwide.


Sika received the Vinyl Recycling Award for this program in 2020.
>30 Years
Sika roofing systems offer an above-average
life cycle
-36’000 t
significant quantities of raw materials are saved and production costs are cut
-10% CO2
the recycling of roof membranes contributes to climate protection
Used roof membranes
Image: Used roof membranes are retrieved and processed into granular material. The recycled material then flows into the production of new roofing materials.
Rogers Centre in Toronto
Image: The Rogers Centre in Toronto, which was completed in 1989, was the first building in the world to have a retractable roof. No less than 41,000 m² of Sika Sarnafil membranes were used in its construction. All of this material was recycled when the building was renovated 30 years later, and the roof was once again sealed with a Sika Sarnafil system.