GEOTECH FS are fire-resistant membranes with harmless inorganic anti-flame additives distributed right through the membrane.
The GEOTECH FS membranes are the result of research activities and do not have the contraindications typical of membranes that are self-protected with metal foil. They can be applied without any protection on both flat and pitched roofs, even on insulating layers with high thermal resistance. GEOTECH FS are polymer bitumen waterproofing membranes that have been tested pursuant to the Scandinavian standard concerning reactions to external fire: Nord Test Method-Resistance to fire spread according to SS 02 48 24 – NT FIRE 006 assimilated as European method UNI ENV 1187/2. Furthermore, it has been classified as B Roof (t2) pursuant to standards UNI EN 13501-5 on both combustible underlying surface and on the incombustible underlying surface. The fire-resistant properties are long-lasting and controlled constantly at the factory.
The three versions of GEOTECH FS membranes differ in terms of the type of mix: MINERAL HELASTOPOL FIRESTOP is with elastomeric polymer-bitumen base, MINERAL ELASTOCENE GEOTECH FS is with polyolefin elastomers and copolymers polymerized with a metallocene catalyst, while GEOTECH FS POLYESTER is with elastoplastomeric polymer-bitumen base. The reinforcement of the GEOTECH FS membranes is rugged and flexible and consists of non-woven polyester fabric; the waterproof coating is resistant to sudden temperature changes and aging. The upper face is self-protected with hot-bonded and pressed slate granules, which represents further protection against fire; over this, there is another side overlap strip without any slate but protected with a torch-bondable Flamina strip to seal the joint. This film is also applied on the lower face of the membrane to enable fast and safe laying. The GEOTECH FS membranes protect the whole roofing against fire when used as the last layer on visible waterproof coverings, even under photovoltaic systems. They are ideal for covering roofs made of ribbed metal sheets and wood. Furthermore, their use is also recommended on systems where fire-sensitive insulating panels will be used and as an undertile membrane on wooden structures.
- The membrane is fire resistant and can be laid even on insulation products with high thermal resistance.
- It contains harmless anti-flame additives.
- It can be laid on any pitch and on both combustible and incombustible substrates.