STROTEX-Q PERFORMANCE is a four-layer roof underlay intended for roofs with full boarding. Double Fiber Technology (DFT) in production gives it very high resistance to weathering and to damage during installation. It is used in roof structures where solar panels are to be installed, and is especially recommended for ceramic-tile coverings. With their innovative technology, Strotex Q membranes equalise differences in water-vapour concentration and so protect the roof's thermal-insulation layer. It can be laid directly on the thermal insulation. It protects the thermal insulation from rain and snow from the outside. Every layer of the product contains UV stabilisers that slow down weather-induced ageing. Thanks to its four-layer construction, the membrane has high tear resistance in both the transverse and longitudinal directions.
| Properties | |
| Manufacturer | Foliarex |
| Weight per m² | 220 g/m² |
| Sales unit | Roll |
| Roll dimensions | 1.5 m x 50 m |
| Number of layers | 4 |
| Sd value | 0.02 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 |
