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 can only be used by a trained approved contractor.