Curved vent arms provide superior cladding tension
& condensation control.
Special curved vent arms have been developed for
the Ecoshelter 9200EV model. The curved vent arm system allows for
the single-skinning (1 x poly layer) of the entire roof ventilator mechanism.
A traditional polythene clad greenhouses that uses
a rack & pinion ridge ventilation system would typically use
a twinskin (2 layer) cladding. This is because a twinskin cladding
is needed reduce the potential for rainwater “ponding” on the ventilator
– particularly when the vent is only partially open (in a near horizontal
position).
The Ecoshelter's specially shaped vent arms allow
sufficient tension to be placed on the polythene cladding so as to avoid
this potential for water ‘ponding’. Additional mid arms also assist
with support & provide extra surface tension to the Duratough film
cladding.
