The Allotment Polytunnel

Our Allotment Polytunnel Range gives seasoned growers everything they need to make their own ideal growing space.

Including, Polythene, 32mm Hoops, Timber door frames and 2 x double zip PVC doors.

U.K. Manufactured from the brackets to the polythene.


Our hoops are between 22% & 75% larger in diameter than some competitor models. - Our Galvanised Steel Hoops are 32mm as standard


Armourguard Coated Steel Framework – Galvanised to last a lifetime


Unique Polythene tensioning system - This allows the polythene to be tensioned or loosened as needed throughout the year


Lumisol Polythene - A British made, 7 layered polythene that has been specifically engineered for the British weather.


Tanalised Timber – As standard, ready cut = No special skills and only limited sawing required.


We Include all the fittings you'll need (including door frame brackets) which have been designed and made in-house in Colne, Lancashire.


Bespoke PVC 3-in-1 doors. - We've designed and created bespoke PVC 3-in-1 doors. These doors allow full access, front and back along with Velcro panels that can be partially or fully opened to allow as much or as little ventilation as you need.

How to build your trenched in Allotment Polytunnel

What you should look out for when comparing polytunnels

Found Your Perfect Polytunnel?

Our Hobby Polytunnels are dispatched within three working days, so you can get your crops started almost straight away! If you want to talk to our in-house experts, call today and they will happily help you find a tunnel from our range to suit your needs. 


Call one of our team on
01282 873120

northern polytunnel, polytunnel, hobby, allotment
Hoops Construction - Read More

    Our steel tubes are coated with Armourguard - our unique high endurance tube which offers up to 20 times the corrosion resistance of pre-galvanised steel tube thanks to its revolutionary combined zinc, aluminium and magnesium coating.

Unique Polytunnel Cover Tensioning - Read More

    The Cover Tensioning System - Using a bespoke turnkey solution, the collar tensioning system enables a quick and easy tensioning of the polytunnel cover throughout the lifespan. Unlike some manufacturers, our system allows easy tightening and slackening throughout the lifespan of the SingleSpan which means you can install the polythene in any season and always have a tight, secure polythene cover.

    polytunnel cover jacking

Traditional Foundation Tubes - Read More

    These can either be concreted or knocked in to the ground, leaving 35-45cm protruding.

    Concreting method: The recognised method when using traditional foundation tubes is to dig a hole (35cm square x 50cm deep) and set the foundation tubes in concrete. Considered to be one of the most secure methods and recommended in high wind areas for extra stability

    Driven in to the ground: Foundation tubes are simply knocked in the ground, leaving 35-45cm protruding. The trenched in Polythene gives extra hold

Crop bars - Read More

    Although often used to hold hanging baskets or to support lateral poles on which to tie up your tomatoes, peas etc, they are more often added to a polytunnel to give it extra strength. Even though we boast that our polytunnels are strongest available, they will give peace of mind during severe, windy storms and also when heavy snow is expected. They increase the structural strength by at least 20%. Can be retrospectively fitted to existing polytunnels.

    polytunnel cover jacking

Polythene options - Read More

    Lumisol Clear

    lumison clear

    Lumisol Clear is a UV ’open’ polythene film, allowing UV light to reach your plants. This can have many benefits for both edible and ornamental crops, such as enhancing the fragrance, taste, colour, earlier harvesting and longer post-harvest shelf life. In addition, UV open films promote plant anti-oxidants which are good for plant health and encourage stronger plants.

    Due to its clarity, clear polythene allows around 2% more light to enter your polytunnel than with a diffused polythene cover. This extra light brings extra heat which can be a benefit during the early and late months of the growing season. Especially popular in northern and western regions where lower light levels naturally occur.

  • Light transmission: Up to 92%
  • Thickness: 720 gauge
  • Thermic effect: Over 80%
  • Diffusion: Less than 35%

  • Lumisol Diffused

    lumison diffused

    Light-diffusing polythene films scatter the light as it passes through the polythene. This enables the light to penetrate deep into the plant canopy, as it hits the plant from all directions, not just from the direction of the sun. This ‘diffused’ light reduces the higher foliage from shading the lower parts of the plant.

    Lumisol Diffused is a UV ’open’ polythene film, allowing UV light to reach your plants. This can have many benefits for both edible and ornamental crops. Thanks to its unique anti-condensation additive, Lumisol Diffused is able to control condensation on the underside of the film.

  • Light transmission: Up to 90%
  • Thickness: 720 gauge
  • Thermic effect: Over 80%
  • Diffusion: 90%

PVC Double Zip Vent Door - Read More

    PVC 3 in 1 door

    A double zipped door that allows easy access whilst also allowing measured ventilation with a Velcro panel

    A PVC 3in1 door that suits all weathers and gardeners. Made exclusively for Northern Polytunnels, this door comes with 2 heavy-duty zips for ease of access, a Velcroed panel that can be removed partially or entirely to allow as much or as little ventilation as required and two Velcro tabs that secure your door in place out of the way for those long hot summer days. To install, simply baton the PVC panel to a wooden door frame.

Growing sustainably undercover shouldn’t cost a fortune, and our Allotment Polytunnel offers a high-quality kit. It contains the same heavy-duty steel framework as our popular Hobby Plus - Easy-Build Polytunnel, but without the added extras and the ‘done for you’ ease that comes with it.


Choosing a minimalist kit means your polytunnel can be bespoke to your needs. This gives you the opportunity to source your own doors - from new or reclaimed timber (or anything else that happens to be lying around), or you can select our double zip PVC door. You can decide whether you want base rails, or side rails and where to purchase them from. This helps keep costs down and personalize your tunnel to your exacting needs. 


As this kit is intended for the DIY enthusiast, some manual skills are required to source and build doors and frames to match your own requirements. This kit does not come with side or base rails, so the traditional method of trenching the cover into the ground is required. If you wanted to source your own timber base rails to attach your cover to, we can supply the necessary fittings.

View Our Trustpilot Profile


HOW TO INSTRUCTIONS, northern polytunnel, polytunnel, hobby, allotment
northern polytunnel, polytunnel, hobby, allotment. polythene
The Allotment Polytunnel
Base Rail Bracket Pack
Drip Line Irrigation Kit