Sarnafast® Tube SFT-50

Sarnafast® Tube SFT-50

The SFT thermally broken tube systems consists of the SFT tube assembled with the appropriate screw fastener. The SFT tube system is used to restrain Sarnafil S/TCS mechanically fixed membranes, by installing rows of SFT fasteners in the side lap of the sheet, at centres determined by the wind uplift and the deck type.

  • Eliminates cold bridging. Standard rigid steel fasteners can add in excess of 10mm to the required thickness of the thermal insulation.
  • Higher fastener design loads which can reduce numbers of fasteners required
Find a Technical Advisor

Usage

The SFT thermally broken tube systems consists of the SFT tube pre-assembled to either an SBF (steel, timber), TI (concrete) or a suitable stainless steel fastener (high humidity applications and in some instances guarantee periods over 15 years).  The 15mm diameter grey polypropylene SFT tube has an integrated 50mm diameter stress plate, with 4 large barbs that puncture and grip the membrane.  This is only suitable for use in insulated Sarnafast applications. For applications with no insulation an alternative fastener and membrane plates will be used.

SFT fasteners must be installed with the appropriate Sarnafil TP Installation tool to ensure the correct fastener setting and to eliminate damage to the SFT tube.

Prior to installation, the Sarnafil membrane must be pre-punched with a Sarnafil SMP punch to avoid distortion of the membrane.

Advantages

  • Eliminates cold bridging. Standard rigid steel fasteners can add in excess of 10mm to the required thickness of the thermal insulation.
  • Higher fastener design loads which can reduce numbers of fasteners required

Colour

Grey