IKO Systems Underlays

IKO Systems Underlays are for use as vapour control layers for adhered IKO Polymeric roofing systems that can be applied in a range of ways.

Systems T-O UnderlaySystems S-A UnderlaySystems T-O Underlayer (Torch-on) consists of a polyester carrier coated with SBS rubber modified bitumen. The upper surface is finished with fine sand and the lower surface has a sacrificial film which rapidly melts during the torching operation.

Systems S-A Underlayer (Self-Adhesive) is an elastomeric self-adhesive underlayer incorporating a robust polyester reinforcement for greater durability, coated with SBS modified bitumen. The product has a smooth upper surface that forms an ideal surface for bonding thermal insulation.

Features and Benefits

  • High tensile polyester base
  • High resistance to damage and delamination
  • SBS bitumen coating offering excellent low temperature flexibility
  • Prevents penetration of water vapour and damage to roof construction
  • Range of application methods to suit project requirement