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What To Look For When Buying A Polytunnel

What To Look For When Buying A Polytunnel

If you are planning on using a polytunnel for your gardening, there are a number of factors you should consider before purchasing one. These include size, ventilation, durability, and cost. It is advisable to plan what you will be growing in your polytunnel before purchasing it.


When buying a polytunnel, you need to think about ventilation. You need to decide if you want to have doors or if you need side ventilation. If you want to use the polytunnel for different purposes, you may want to install side ventilation.

A premium polytunnel should have an extra wide door and an easy-fit frame. You can also look for features like netting on the top half to prevent insects. The material used for the polytunnel should be waterproof and UV resistant.


The durability of a polytunnel depends on the quality of the frame and polythene covering. Different materials have different durability and insulation properties, and there are pros and cons for each one. The best option for longevity is a steel frame, which will resist corrosion and maintain its shape and size. However, cheaper steel frames will be flimsier and more likely to collapse under snow.

Another consideration is the durability of the greenhouse or polytunnel. While greenhouses are ‘for life’ once installed, a polytunnel will need to be replaced if the cover gets damaged, and this can be expensive. However, modern polytunnels are designed to resist storms and are incredibly durable.


The carbon cost of a polytunnel is calculated by calculating the amount of CO2 emissions created during its production and transportation. In Europe, the average CO2 emission factor for road transport is 62g CO2/tonne-km, while rail freight emissions are 22g CO2/tonne-km. However, this figure varies from region to region.

There are many options available when it comes to materials used to build a polytunnel. For example, wood is a durable material that can last for many years, especially if treated. Plastic, on the other hand, is cheaper and has good insulating properties, but is prone to breaking or cracking in adverse weather. Wood can be used for the framework of a polytunnel, but it must be properly protected.


There are several factors to consider when choosing the size of your polytunnel. Depending on your space, you may want to choose a small, 2-metre-wide tunnel. This will provide an optimal growing space for your plants. You can also choose a larger, longer tunnel.

If you have an ambitious nature, a large polytunnel may be ideal for you. Alternatively, a small, affordable one may be sufficient. However, if you plan to keep your polytunnel for many years, it would be a good idea to invest in a higher quality model.


When buying a polytunnel, quality is of utmost importance. You should choose a good brand, as cheaper polytunnels often lack ventilation and don’t offer good light levels for plants. In addition, cheap polytunnels are prone to blow-away and may not last long. Likewise, you should avoid shopping from retailers with excessive advertising, as these can detract from the quality of the product.

The main parts of a polytunnel kit are its frame and cover. The frame is crucial for strength and aerodynamics. The covers vary widely between manufacturers.