As of now*, with our prolongated building approval Z-10.4-583 for sandwich panels with PIR/PUR-foam core, you have the possibility to use photovoltaic-fasteners of 2 different companies:
K2:
for the first time the non-penetrating system of K2, ”basic rail” in conjunction with “basic clip”, can be used with our G4-roof panels with core thicknesses ≥ 40 mm and standard steel cover sheets (0,5mm for external sheet and 0,45mm for internal sheet upon request) as an approved all-in-one system with general building approval (“allgemeine Bauartgenehmigung”).
Schletter:
photovoltaic fasteners for G4-roof panels with core thicknesses ≥ 40 mm and standard steel cover sheets (0,6mm external sheet & 0,45mm internal sheet) as approved all-in-one system with Schletter (trapezoidal bracket “clamp fit” in conjunction with fasteners “single fix-V”), also providing a general building approval (“allgemeine Bauartgenehmigung”).
Advantages of the complete systems:
Non-penetrative photovoltaic installation on G4 roof panels
Approval for Supporting Metecno Sandwich Panels: Z-10.4-583
Schletter configurator for download: LINK
* not applicable retrospectively