OptiTorch-Premium Self-Adhesive Felt Waterproofing System

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

SA52 Capsheet

Flame free, self-adhesive application
Incorporates Borner graphite technology which actively prevents spread of flames on the roof
Tested as part of a system to achieve Broof Test 4 fire classification as certified by Warringtonfire
Excellent low temperature flexibility at -25°C
280g/m2 polyester/glass composite reinforcement
Manufactured for exceptional quality using German engineering
Integrated ‘Safe-Seal’ laps to enable homogenous, efficient sealing of side laps

SA Underlay

Flame free, self-adhesive application
Easy to peel removable film
High resistance to foot marking
Low temperature flexibility at -15°C
Suitable for all types of roofing applications