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General notes
Fitting the special
headless screw
14
11. Rooftop installation on corrugated / sheet
steel roofs with double ended screws
- For roofs covered in corrugated roofing sheets, drill the hole (Ø 14) for the
double ended screws into the roof skin respectively at the apex of the sheet
profile.
-
Maintain the vertical clearance between the holes for the special headless
screws to safeguard the rail clearance.
- Ensure the secure fixing on the sub-structure/rafters. Where required, create
an auxiliary sub-structure on site.
-
Drill the holes for securing the special headless screws in the rafters
(Ø 8.5) before commencing the installation. Insert a suitable rawl plug in
case of concrete or brickwork sub-structure.
-
The special headless screws must be inserted to a depth of between 80
and 100 mm. Lubrication makes the insertion easier. The smooth part of the
shank acts as the sealing seat for the contact gasket. It must be located in
the area of the roof skin.
-
For improved stability, the mounting plates for the special headless screws
are oriented upwards.
- The roof skin is sealed by light and careful tightening of the flanged nut.
Otherwise there is a risk that the corrugated Eternit roofing sheets will
fracture.
Max. 0.4 m
Rail protrusion
Collector array width
Distribute all supplied special headless screws evenly over the width of
NB
the collector array to spread the loads applied.
Tighten flange nut
carefully
Risk of
breakage
Max. 0.4 m
Rail protrusion
Aluminium mounting plate 6 mm
Double ended screw M12x300
EPDM gasket, UV-resistant
Corrugated roof
Option
Snow load
extension set
Special headless
screw with mounting
plate
3062815_0110
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