What is it?

OptiTorch-Premium Self-Adhesive system is a high-performance felt waterproofing system, comprised of the following:

  • OT-Premium SA Underlay – a polyester based waterproofing material designed for use as a vapour control layer or base layer in built-up roofing systems. This is particularly suited to specifications where fire safety does not allow the use of torch-on membranes.
  • OT-Premium SA52 Cap Sheet – a cold-applied, self-adhesive bituminous cap sheet which is saturated and coated with high-quality SBS (Styrene-Butadiene-Styrene) modified bitumen. The upper layer is protected with slate mineral and the bottom layer is coated with self-adhesive compound, covered with removable film. In addition, this cap sheet incorporates exceptional fire protection properties and has been fully fire tested.

What can it be used for?

The OptiTorch-Premium felt system is easy to apply with the ability to install all year round due to it not being affected by the weather. OptiTorch-Premium also provides long-term UV resistance and contains special additives to protect from root growth. It’s suitable for:

  • Sites with no hot works permitted
  • Flat roofs
  • Pitched roofs
  • Curved roofs
  • Green roofs
  • Areas of foot traffic
  • New construction
  • Refurbishment projects

OptiTorch-Premium Anti-Root

OptiTorch-Premium Standard

OptiTorch-Premium can only be used by a trained approved contractor.