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Installation of rectangular hood above roof
Check the surface after making a hole in the roof and
make sure that the bottom fitting has a load-bearing,
stable attachment. If not, build a frame attachment.
Cut a hole in the roofing felt and insert the bottom
fitting at the upper edge to ensure that condensation
does not run out into the roof structure.
Then install locking band for the bottom fitting.
(When installing a Ø250 pipe there is no locking band,
in which case the chimney must be attached directly
to the bottom fitting using screws.)
Solder the pipe.
Secure the bottom fitting to the ceiling, then tighten
the screws for the stay ring in the bottom fitting.
Note the distance of 50 mm from cladding to flamma-
ble material.
Bottom fitting
Felt roof / Sarnafil
Check with the roof producer that it is permitted to
make a roof through-connection in the roof in ques-
tion. Then follow the producer’s guidelines for the
roof through-connection.
• In the event of a square cover, you are recom-
mended to use both the bottom and the lower
fittings.
All work with this type of roof sealing system
must be performed by a professional in accord-
ance with applicable regulations.
50 mm
STAGSVEP
Befintlig taktäckning
Papp/Sarnafil
NVI 2000 - ROOF HOOD
Existing roof cover
Felt/Sarnafil
LOCKING BAND