STROTEX-Q STRONG PREMIUM is a four-layer roof underlay especially recommended for roofs pitched above 17 degrees. It stands out for high resistance to mechanical damage thanks to its built-in polypropylene reinforcing mesh. It is recommended for roofs with full boarding. It protects the thermal insulation from rain and snow from the outside. With their innovative technology, Strotex Q membranes equalise differences in water-vapour concentration and so protect the roof's thermal-insulation layer. Thanks to its four-layer construction, the membrane has high tear resistance in both the transverse and longitudinal directions. It is also available at 160 g/m².
| Properties | |
| Manufacturer | Foliarex |
| Weight per m² | 160 g/m² or 200 g/m² |
| Sales unit | Roll |
| Roll dimensions | 1.5 m x 50 m |
| Number of layers | 4 |
| Sd value | 0.03 m |
| Operating temperature | -30 to 80 °C |
| Watertightness class | Class W1 |
| Reaction to fire class | Class E |
| UV resistance | 3 months |
| Colour | dark blue/white |
| Note | Also available at 160 g/m² |
