Double-threaded screw for fastening photovoltaic systems on roofs with wooden, concrete or hollow bricks and concrete load-bearing structure, covered by corrugated panels, faux panels or tiles.
Stud screw STSR A2
STSR is the double-threaded screw in A2 stainless steel for PV panels mounting on corrugated panel or faux-barrel tile roofs with wooden load-bearing structure. Also suitable for installation on concrete with chemical injection mortar or in brick and cement structure with chemical injection mortar and FIS HK injection anchor sleeve or FIS HN injection anchor sleeves with net. Incorporated EPDM gasket for sealing against rain infiltration. Pre-drilling required.
The STSR double-threaded screw is supplied pre-assembled with EPDM gasket, tightening nut and pair of nuts for connection to the MW or SSP brackets.
The roofing must not be removed during installation.
Thanks to the EPDM gasket, waterproofness of the roof is maintained.
Properties
Stud and nuts in stainless steel A2-70 according to EN ISO 3506-1/2:2009.
Application and approval
Applications
Installation of PV panels on roofs with wooden, concrete or hollow bricks and concrete load-bearing structure, covered by corrugated panels, faux panels or tiles.
Building materials
Concrete beams and slabs.
Hollow brick and concrete slabs.
Wooden beams.
You can find detailed information on building materials in the approval document.
Assembly instruction
Functionality
Identify the length of the STSR double-threaded screw depending on the roof cover thickness.
Determine the centre distance of the STSR double-threaded screws according to the snow and wind loads of the system installation area and inclination of the roof.
Identify the position of the STSR double-threaded screws depending on the load-bearing structure and the layout of the installation.
Drill the support according to the diameter of the screw and the type of support.
In case of concrete, fasten the STSR double-threaded screw into the structure using a chemical injection mortar.
In case of hollow bricks covered by concrete, fasten the STSR double-threaded screw into the structure using a chemical injection mortar and FIS HK injection anchor sleeve.
In case of wooden beams, fasten the STSR double-threaded screw into the structure after pre-drilling it.
Tighten the STSR double-threaded screw until the gasket is fully in contact with the roof covering.
Carefully seal the exit point of the screw from the roof with bituminous sealant in order to improve waterproofness.
Connect the Solar rail to the upper part of the screw by inserting SSP or MW connection plates, adjusting their height using the MU nuts.
Installation stud screw STSR in concrete substructure
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Installation stud screw STSR in hollow brick substructure
