7
• Fix the auxiliary boards to battens so that the distribu-
tion of anchors resembles the positions in Fig. 2. At
the same time screw the boards so high that the roof
anchor does not hinder placing the roof tile with the
right overlap (see Fig. 8).
• Hang the roof anchors onto the auxiliary board
respecting their distribution shown in Fig. 2.
• Fix the anchors using stainless steel screws.
2.2.2 Installation with roof anchors for rafters
For tiled roofs, rafter anchors can be used. Either a
fi
xed
(not adjustable) stainless-steel hook (Fig.7a) can be
used, or an adjustable aluminum anchor (Fig. 7b) that
enables horizontal shift of the anchor along the
fi
board. For this anchor type also the rail
fi
xing height can
be adjusted.
Installation
• Remove roo
fi
ng in places where anchors shall be
fi
xed
(Fig. 5). The distance “a” between anchors is de
fi
ned
in Fig. 2.
• Cut the counter batten used for
fi
xing the waterproo-
fi
ng membrane.
• Prior to the installation itself, use an underlay for
anchors according to the thickness of battens and
counter battens so that the anchors installed do not
hinder proper positioning of the roof tiles.
• Screw the adjustable aluminum anchor to a rafter and
move it in the groove horizontally so that it doesn’t
hinder proper positioning of the roof tile. If a
fi
xed
stainless steel anchor is used, its position shall be
adjusted before
fi
xing.
• Fix all the other roof anchors in the same way.
• When installing roof anchors, maintain a direction
parallel to the roo
fi
ng (horizontal).
2.2.3 Installation with roof anchors for shin-
gle or metal roofs
• Depending on the number of collectors, measure and
calculate the positions for
fi
xing roof anchors (Fig. 2).
Such places shall be selected for mounting where
anchors can be
fi
xed suf
fi
ciently into the roof frame
(rafter or similar).
• Prior to
fi
xing the anchor, apply suitable silicone
putty on the contact surface (adjacent to the roo
fi
ng)
in order to prevent water leaking, or possibly use a
sealing method recommended by the roo
fi
ng manu-
facturer.
• Simply lay the anchor onto the roof tiles and
fi
x it with
stainless-steel bolts.
If the roo
fi
ng is made of e.g. copper or
zinc-plated iron, then the anchor contact surface
shall be isolated using suitable underlay (rubber).
Otherwise there is a risk of contact corrosion.
2.2.4 Installation using bolts for fi xing rails
onto a roof
This method of installation is preferably used for roofs of
bitumen corrugated sheets like Gutta or Onduline etc., or
for corrugated eternit or metal sheets.
counter
batten
rafter
roof
battens
waterproofing membrane
a
Installation:
• Depending on the number of collectors, locate the
places for drilling holes and installing bolts into the
roo
fi
ng (Fig. 6f). Pre-drill 6 mm diam. holes into a
rafter or another massive wooden roof element for the
bolts.
Holes should be always drilled in the crest
of the roo
fi
ng wave, not in its valley, to avoid
leakage.
• The bolt shall be screwed into a rafter or another mas-
sive wooden roof element (see 2.2.3) using spanner
No. 7.
• After screwing the bolt in, put on the rubber seal (Fig.
6f) and using a washer and nut, seal the drilled hole.
• Then mount the U-shaped bracket (Fig. 9) on the
bolt, between two nuts with a serrated washer.
• Then M8 bolt with
fl
oating head (for rails) shall be
mounted into the other end of the bracket. First insert
the
fl
oating head into the groove of the rail, and then
tighten the bolt together with the rail to the U-shaped
bracket using a nut and a serrated washer.
Fig. 5: Fixing an auxiliary board and roof anchors
Fig. 6: Opening the space for anchor fi xing
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