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Are Polytunnels Warmer Than Greenhouses?

Are Polytunnels Warmer Than Greenhouses

If you want to grow crops in climates that are too cold to grow your own, you may want to consider polytunnels. They are a great way to grow your crops even in cold climates. They also offer greater flexibility and are less expensive. Read on to find out more.


There are various methods for insulating a polytunnel. One of the most effective methods involves using bubble wrap. The bubbles in the wrap help retain heat and reduce the heat loss. These wraps can be hung on the walls with the help of string or cable ties. If possible, use UV-stabilised bubble wrap.

Another method involves using garden fleece. This material is inexpensive and can be used as an insulation material in a polytunnel or mini-tunnel. During the day, the garden fleece can be removed and replaced. On the other hand, you can use traditional heating methods, which are effective in small areas but quite expensive for large areas.

Another option for insulating a polytunnel is using thermal mass. These can be used in the walls and floors of the polytunnel. They will absorb heat during the day and release it gradually at night. You can also use water containers to store heat.


The cost of polytunnels varies depending on what type you purchase, as well as how long you plan on using them. You can choose to buy a simple, low-cost one, or a custom-built one, and get it delivered to your home. Depending on size and construction, polytunnels can run anywhere from fifty to several hundred dollars.

A basic polytunnel is made of three components: the stanchion/hoop assembly, the ridge, and the side gutters. These components are designed to provide a sturdy framework for the cladding. Polytunnels also typically include footplates for bolting them into the foundation tubes and concrete.

If you plan on building your own polytunnel, you will need to have two people on hand during all stages of construction. It is important to have at least one person around to help you with any steps, as you’ll need to nail the plastic sheet into the frame. Fortunately, the construction process is relatively easy, and there are many instructions available online for DIY enthusiasts.


Polytunnels are a new way to grow crops. These enclosed greenhouses are designed to provide a climate-controlled growth capsule, which can extend the growing season. The greenhouses are also useful for growing plants that are not native to the area. Some varieties can be grown in these greenhouses even during the cold winter months.

Traditional greenhouse production environments shift the solar spectrum away from shorter wavelengths. But there are now scientific studies which show that exposure to short wavelengths of sunlight can benefit crops. For example, ultraviolet-B and blue-light light can improve the form and colour of some herbs and salads. The greenhouses can also be an excellent choice for high-value short-rotation crops, which can yield high returns.

Commercial polytunnels are typically 16 feet wide, eight feet high, and 36 feet long. They are available with hinged doors on both sides and an 800-gauge polythene cover. However, domestic and allotment versions are much cheaper.