Exhausto DTH Mode D'emploi page 45

3004346_2016_04_01.fm
Fig. 7, 8 and 8a
1
2
NB
- applies to
PERFORM
only
3
4
5
6
7
Step
Make a hole in the roof approx. 30 mm larger than the roof duct.
Loosen the overlying tile/roofing material and push it up to make room for the
cover.
PERFORM or lead cover
It is a good idea to bend the edge of flashing
(at the bottom and, if appropriate, the visible
part of the sides) to ensure greater strength
(better form stability) and a more attractive
finish (fig. 8a.).
Insert the roof duct carefully into the
roof so that the cover is flush with the
top of the tiles.
Fit the support bars to the roof cap so
that the roof duct will be lifted approx.
5 mm when the support bars are
subsequently attached to the roofing
beams. This ensures that all the
weight is borne by the support bars.
Roll out the cover material and knock
it gently into shape with a rubber
hammer or sandbag.
Replace the overlying tile/roofing material on top of the cover.
GB - Product information
Action
Zinc cover
Insert the roof duct carefully into the roof
so that the cover is flush with the roofing
material.
Fit the support bars to the roof cap so that
the roof duct will be lifted approx. 1 mm
when the support bars are subsequently
attached to the roofing beams. This
ensures that all the weight is borne by the
support bars.
8
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