Alternative Uses for Roofing Membranes

All single-ply membranes make for great roofing systems, but they can be used for a variety of other purposes too. EPDM, TPO, and PVC can be used in the lining of underground tunnels and can serve as liners for water retention ponds, irrigation canals, and other water containment systems.

For years, EPDM membranes were used as pond liners – even before they were utilized for commercial roofing. You could see EPDM pond liners being used in agriculture for irrigation canals and ditches, by municipal water systems for retention ponds and spillways, and even in backyards as small ponds and water features. This is still true today, and EPDM has expanded into additional markets such as tunnel waterproofing.

The number of large underground transportation tunnels used for vehicle traffic or metropolitan railways has certainly increased in the last few decades as traffic and access needs continue to outstrip the supply of existing infrastructure. These tunnels have to keep water out, whether they’re underneath a river or traversing through a mountain, and single-ply membranes meet their waterproofing needs with the same technology used on the roof. Different types of membrane offer specific benefits, from EPDM’s large sheet size to thermoplastics’ (TPO/PVC) seam weldability. Regardless of whether the tunnel is a boring project or a “cut and cover”, lining the tunnel can be accomplished using several different installation methods and can utilize EPDM, TPO, or PVC.

For more information, please consult the links for the products or specifications on the Carlisle SynTec website below.

Tunnels – Conventional Blindside Method

Consult the Tunnel Waterproofing System – Conventional Specification and Details on the Carlisle SynTec website. 

Tunnels – Cut and Cover Method

Consult the Tunnel Waterproofing System – Cut and Cover Specification and Details on the Carlisle SynTec website. 

Pond Liners

Consult GeoMembrane Page for Pond Liner Products and Brochures on the Carlisle SynTec website. 

 Contact Craig Tyler at [email protected] with questions.

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