IKO SBS Premium Underlay

Application

The product is designed to be used as part of multiple layer bituminous felt system (cold and warm roof) and should be used with an SBS cap sheet. All waterproofing detailing must be undertaken as separate flashings.

Description

A torch-on polyester based, sand surfaced polymer modified bitumen membrane used as an underlay. The styrene butadiene styrene (SBS) modification is added to the bitumen, creating an elastomeric product which is able to cope with greater ranges of temperature whilst maintaining superior flexibility.

Features and benefits:

  • SBS modification – greater flexibility under ambient temperature fluctuations.
  • CE marked.

Applications:

The product is designed to be used as part of multiple layer bituminous felt system (cold and warm roof) and should be used with an SBS cap sheet. All waterproofing detailing must be undertaken as separate flashings.

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 SBS Premium Underlay

Standard product features

Technical characteristics:

  • Composition: Oxidized/ SBS blend.
  • Form: Roll.
  • Colour: Sand finished.
  • Length: 12 m.
  • Width: 1 m.
  • Mass/ Weight: 3.2 kg/m².
  • Roll weight: 38.2 kg.
  • Carrier: Polyester.
  • External fire performance (to EN 13501-5): F-roof(t4).
  • Reaction to fire (to EN 13501-1): F.
  • Water tightness (to EN 1928): Pass.
  • Maximum tensile force (to EN 12311-1): Longitudinal and transverse: ≥350 N/50 mm.
  • Elongation (to EN 12311-1): Longitudinal and transverse: ≥17%.
  • Resistance to static loading (to EN 12730 (A)): 20 kg.

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