IKO Systems T-F Underlay
Application

For use as reinforced bitumen underlay within in a built-up roofing specification system, in both new build and refurbishment projects. Must be used in conjunction with an IKO Safestick or IKO S-A cap sheets and in accordance with an IKO specification.

Prime the substrate using either IKO Systems Bonding Agent or IKOpro Sprayfast MPP.

Description

A polyester reinforced bitumen membrane used as an underlay within a built-up roofing system; the membrane is coated on both sides with self-adhesive bitumen styrene butadiene styrene (SBS) elastomeric coating. The upper surface is protected with a protective film that facilitates rapid bonding of the waterproofing layers. The self-adhesive coating underside is protected by a release film.

The underside has a self-adhesive bitumen coating that provides a 40% partial bond allowing vapour dispersion between the membrane and substrate. The underside has a 75 mm selvedge that facilitates a rapid installation of the lap joints.

Features and benefits:

  • Flame free application – self-adhesive bonding to a primed substrate with laps secured using hot-air welding; no requirement for gas torches.
  • Partial bond – reduces the potential for blistering.
  • Rapid installation – rolls can be installed quickly with additional rapid sealing of the laps.
  • Surface protection – the upper surface has a protective film finish that provides additional protection to the membrane.
  • CE marked.

Applications:

For use as reinforced bitumen underlay within in a built-up roofing specification system, in both new build and refurbishment projects. Must be used in conjunction with an IKO Safestick or IKO S-A cap sheets and in accordance with an IKO specification.

Prime the substrate using either IKO Systems Bonding Agent or IKOpro Sprayfast MPP.

General information

Uniclass 2015

Pr_25_57_08_75 Reinforced bitumen roofing sheetsPrimary

CAWS

J41/10 Built-up reinforced bitumen membrane warm deck roof covering

J41/110 Built-up reinforced bitumen membrane warm deck roof covering

J41/12 Built-up reinforced bitumen membrane cold deck roof covering

J41/130 Built-up reinforced bitumen membrane cold deck roof covering

Specification data - Reinforced bitumen roofing sheets

Product Reference

IKO Systems T-F Underlay

Standard product features

Technical characteristics:

  • Composition: SBS.
  • Form: Roll.
  • Colour: Film.
  • Length: 16 m.
  • Width: 1 m.
  • Mass/ weight: 2.50 kg/m².
  • Roll weight: 40 kg.
  • Carrier: Polyester (175 g/m²).
  • Membrane bond: Self-adhesive.
  • Lap bond: Hot air weld.

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