Premier UK Polytunnels - Supplied & Installed
Tel: 01594 546 935

Irrigation & Ventilation

Polytunnels |  Irrigation & Ventilation

Irrigation and Watering Systems

Overhead spray line irrigation kits are available for use with either permanent or portable water supplies.

A Twin Line Configuration
  • Suitable for polyhouses up to 6.4m in span and above this width triple line configurations are specified. Each spray line includes pin jet nozzles spaced at 1.5m, which offer a 3.2m coverage and come complete with all fittings including drain valves. We do recommend crop supports are fitted to the polytunnel if irrigation is required.
Header Kits
  • Available to give a convenient method of interconnecting spray lines to a permanent water supply for end or centre fed formats along with isolator valves.
Spray Line and Header Kits
  • Available to meet the majority of your basic irrigation needs, however, if other irrigation equipment (drip or sprinkler) or automatic watering is required we can put you in touch with specialists.

Polytunnel Ventilation

Good ventilation is essential to ensure a successful crop and how much ventilation depends upon the crop needs, size and location of the polytunnel structure.

Polytunnel Gable End Ventilation
  • Adequate polytunnel ventilation can be achieved in 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 be installed to release the heat that builds up in the upper roof space.
Polytunnel Side Ventilation
  • 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.

Polythene Covers

Polytunnel Full Height Side / 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.
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.