Adequate ventilation in a Polytunnel structure is essential to maintain optimum growing conditions. We provide a range of solutions that allow you to choose the most efficient and cost effective for your own needs.
Polytunnel Gable End Ventilation
Ideal for smaller structures with door openings to each end allowing a through draft which is essential on warmer days. For more efficient polytunnel ventilation, a louvre vent panel can also be installed to release the heat that builds up in the upper roof space.
Polytunnel Extraction Fans
Extractor fans at one end, with auto inlet louvre’s at the other will give a good air movement in the polytunnel regardless of the outside conditions.
Extra ventilation is essential for polytunnel structures longer than 20m to avoid hot spots in the centre. Side ventilation systems are available as a complete kit that include either a timber or aluminium fixing rail or side aluminium gutters to attach the cladding materials to the frame (aluminium rails are more suitable as they do not flex during operation). Wide mesh netting (to allow maximum ventilation) or windbreak netting is used to contain the roll up curtain.
Full Height/ End Ventilation
An optional full height 2.5m walk through ventilation system can be supplied on vertically sided polytunnel structures – suspended from a side gutter or the end lintel to allow walk-through access and easy loading of stock as well as efficient ventilation. Operation is via an aluminium roll tube driven through manual gearboxes with crank handles.