Northern Polytunnels

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01282 873120
Sales & Enquiries
01282 873120

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Commercial Single Span Polytunnels

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Commercial Single Span Polytunnels

Product Description

We have used our 40 years experience to design and develop a Single Span range which is best suited to the needs of the commercial growers.We only use commercial grade materials that are made to withstand the trials and tribulations of commercial use.


Please read our  comparison brochure, which can be found at the bottom of this page, We made the comparison because we think it is important to highlight the differences between our structures and those of our competitors.


It’s all about being fit or purpose - the fixtures and fittings should be made of a commercial grade. You’d never expect to find hobby polytunnel fittings on a commercial polytunnel...We wouldn’t, would you?


Our CLASSIC Commercial Single Span structures are available in the following widths:



  • 18ft (5.49 metres)

  • 21ft (6.40 metres)

  • 24ft (7.31 metres)

  • 27ft (8.23 metres)

  • 30ft (9.14 metres)


We offer the following specification on all of our CLASSIC Commercial Single Span Polytunnels as standard:


 18ft and 21ft Widths


  • Steel Diameter: 50.8 mm

  • Steel Specification: Z35 high tensile galvanised.

  • 2 Piece Hoops - We supply all of our hoops as a 2-piece hoop, which are stronger and easier to construct - We use these as standard across our range of commercial structures.

  • Straight Sides: Approx. 1m -  excellent accessibility and increases floor space.

  • Foundation tubes: Hot dipped and galvanised to ensure corrosion resistance. 42mm D.O with a 3.25mm wall thickness (1¼") nominal bore.

  • Fittings: All connections and brackets are heavy duty and zinc plated.

  • End Frames: Timber (3"x3" Tanalised timber) or Aluminium. 

  • All necessary brackets, bolts and fixings.



24ft, 27ft & 30ft Widths



  • Steel Diameter: 60.3 mm

  • Steel Specification: Z35 high tensile galvanised.

  • 2 Piece Hoops: We supply all of our hoops as a 2-piece hoop, which are stronger and easier to construct - We use these as standard across our range for domestic and commercial structures.

  • Straight Sides: Approx. 1m - excellent accessibility and increases floor space.
    Foundation tubes: Hot dipped and galvanised to ensure corrosion resistance. 49mm D.O with a 3.25mm wall thickness (1¼") nominal bore.

  • Fixing brackets: All connections and brackets are zinc plated.

  • End Frames: Timber (3"x3" Tanalised timber) or Aluminium.

  • All necessary brackets, bolts and fixings.


Cover Options


LUMISOL CLEAR: polytunnel cover provides excellent clarity and transmits 92% of the light crops use to grow and develop.  In the UK where light levels can be lower, LUMISOL CLEAR allows more light to enter which in turn can bring picking time forward.In addition to its temperature control properties Lumisol Clear manipulates the type and level of light entering the greenhouse to significantly improve crop hardiness, colour, taste and shelf-life. 


Ideal for: Where less chemical usage is desired. Bedding plants, plants with a shortened growing period as well a nursery and salad crops.  


LUMISOL DIFFUSED: polytunnel cover possesses high levels of light diffusion to scatter the light entering  the greenhouse more evenly.  Additionally, the day and night temperature management properties of LUMISOL DIFFUSED smooth out daily highs and lows of greenhouse temperature.The highly effective combination helps to reduce crop stress and to improve crop uniformity in order to deliver the highest yields possible.


Ideal for: Shown to increase crop yield and quality of ornamental plants, roses, salads, soft fruits and some vegetable crops.


OPAQUE WHITE : A thermic film developed to help keep the growing environment warmer by reducing the heat lost through long wavelength infra-red radiation. Higher overnight temperatures encourage plant growth, can reduce plant losses and allow savings to be made on heating.


Ideal for: Crops that require shade and cooler daytime temperatures such as nursery stock, ferns and conifers. The overwintering of hardy shrubs and for general hardening off. Also widely used in the agriculture for general live stock housing and also general storage.


GREEN/WHITE : Ideal for: Green & white polythene is especially formulated to meet the needs of the mushroom grower. The green outer layer helps this cover blend in with the environment, whilst the white layer reflects internal lighting to provide a pleasant working environment. A black core layer ensures complete opacity (black-out) and contributes to the durability of the film.


This film is also used for other applications, such as livestock housing, fish farms and protective structures. As this polythene is black-out, artificial lighting will be required.


40% SHADE NETTING: 40% shade value as standard. Other shade values can be catered for. Dark green in colour, insect netting, bird netting and anti-hail netting can also be supplied.



 


PLEASE NOTE: Commercial Polytunnels may require planning permission, so it is always best to enquiry at your local planning office before purchasing a commercial polytunnel. Our IN-HOUSE team of structural design engineers can help with the planning application process by submitting planning application drawings for your site and include structure elevations. Prior to an order, this service will occur a charge which will be credited when a official order is received.

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Tel: 01282 873120 • Fax: 01282 871733 • Email: info@npstructures.co.uk
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Mill Green, Waterside Road, Colne, Lancs, BB8 0TA