Sarnafil® AT, Advanced Technology, is the next generation of single ply membranes. Proven Performance for over 60 years, Sika® Sarnafil® continues to remain a market leader within the UK roofing industry.

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What is Sarnafil® AT?

Sika® Sarnafil® AT membrane is a hybrid technology, that combines the flexibility and weldable of Sika® Sarnafil® PVC single ply membranes whilst providing a sustainable waterproofing solution.

Sika® has desiged and created, through continuous innovation and development, this single ply membrane with the best attributes of single ply as a roofing solution, and advanced the technology within which forms Sarnafil® Advanced Technology, Sarnafil® AT.

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Download Sarnafil® AT Product Data Sheets

Saranfil AT

The FIRST UK roofing membrane to achieve Silver
Cradle to Cradle Certified™

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What is Cradle to Cradle?

Sarnafil® Advanced Technology is the only UK roofing membrane to be certified in Cradle to Cradle. Sarnafil® AT has been independently assessed to a Silver certification by the organisation who globally assess products to ensure they are more sustainable and safer for the circular economy. Find out more about Cradle to Cradle and their assesment process:

Download Sarnafil® AT Cradle to Cradle Certificates

Sarnafil® AT White Paper

A White Paper explaining what Cradle to Cradle® is, and which criteria the Sarnafil® AT roofing membrane meets is now available for download.

This White Paper also holds educational value and could contribute to Continuing Professional Development (CPD) points.

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Benefits for Specifiers and Building Owners


No oils, plasticizers or precarious heavy metals, ideal for sustainable buildings.

cradle to cradle

Sarnafil® AT is Silver Cradle to Cradle® certified in sustainability performance.


QUV tested for long-term service and durabilty for decades.


High resistance to impact damage, which helps to avoid punctures during installation and service.


A unique robust hybrid single ply technology  


Easy, faster application and detailing work. Self adhesive tapes and membranes for detailing and upstands.


Easy to weld and produce reliable welds like PVC, but also with an even wider welding temperatures window.


Highly flexible, even at low temperatures, which allows faster rollout of the membranes on site.

Please contact our Technical Team directly if you require Sarnafil AT Standard Details in DWG and PDF format: