Sika-Trocal Metal Discs

PVC coated metal washers with a mechanical fastener through the centre, used to secure Sika-Trocal Type S and SG single-ply waterproof membranes against wind uplift. The discs are solvent welded to the underside of the membrane.

Proprietary pressure plates are used to secure the edge of the membrane.

General information

Uniclass 2015

Pr_20_29_60_96 WashersPrimary


J42/10 Warm deck roof covering

J42/355 Mechanical fasteners, washers, pressure plates, etc.

Specification data - Washers

Product Reference

Sika-Trocal Metal Discs

Product Options


The S3 disc is designed to be used with Sika-Trocal S3 Disc Tube and WX-48T fasteners, or thermally broken fasteners from SFS Intec and Fixfast. S1 and S2 discs are designed to be used in non-thermally broken tube applications with suitable screw fasteners by Sika-Trocal, SFS Intec and Fixfast. Consult Sika-Trocal for recommendations and advice.

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