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Special features for corrugated/sheet steel roofs with double-ended screws
Fitting the
double-ended screw
Flange nut,
remove carefully,
risk of breakage.
16
Rooftop installation -
Corrugated roof
Max. 0.4 m
rail protrusion
Rail width
Use thread-locking
compound to prevent
moisture entering
Distribute all supplied double-ended screws evenly over the width of the
CAUTION
collector array to spread the loads applied.
- For roofs covered in corrugated roofing sheets, drill the holes (Ø 14) into
the roof skin respectively at the apex of the sheet profile.
-
Maintain the vertical clearance between the holes for the double-ended
screws to safeguard the rail clearance.
- Ensure the secure fixing on the sub-structure/rafters. Where required, create
an additional sub-structure on site.
-
Drill the holes for securing the double-ended screws in the rafters (Ø 8.5)
before commencing the installation. Insert a suitable rawl plug in case of
concrete or brickwork sub-structures.
-
The double-ended 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 sealing seat for the contact gasket. It must be located in the
area of the roof skin.
-
The upper mounting plates point downwards; the lower mounting plates
point upwards. If the snow load extension set is used the double ended
screws should be cut off flush with the nut, above the mounting plate. This
ensures that the collector housing does not come to rest on the screws.
- The roof skin is sealed by lightly and carefully tightening the flanged nut.
Corrugated Eternit roofing sheets may otherwise fracture. Use filler elements
(on site) where necessary.
-
We recommend the use of a thread-locking compound (e.g. Marston-Domsel
585.243) to prevent moisture entering along the thread and to secure the
position of the flange nut.
Max. 0.4 m
rail protrusion
Aluminium mounting plate 6 mm
Double-ended screw M12 x 300
EPDM gasket, UV-resistant
Filler piece (on site)
Corrugated roof
>15°
Option
Snow load
extension set
Double-ended screw
with mounting plate
3062815_201508
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