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What Is The Best Polytunnel Cover?

What Is The Best Polytunnel Cover

Polytunnels are among the best ways to grow your plants indoors. They are less expensive than lean-to greenhouses, easy to erect, and durable. Moreover, these structures help you extend the growing season during the winters. Read on to learn more about their advantages.

Less expensive than lean-to greenhouses

If you’re looking for a more cost-effective alternative to a lean-to greenhouse, polytunnels are the way to go. A six foot by sixteen foot polytunnel is about six hundred dollars, while a lean-to greenhouse can cost up to two thousand dollars. Polytunnels are available in many different styles, including thermal, UV-protected and anti-fog. They also come in a variety of colours. Their most common thickness is 720 gauge, which is 180 microns thick.

Polytunnels are normally constructed of curved hoop-shaped frames covered with polythene. This creates a warmer climate for plants. Cold frames, on the other hand, are box-shaped structures with plastic or glass panels. They retain heat and protect plants from harsh weather conditions, but are only suitable for small-scale plants. They can also be fiddly to access, so they are not a good option if you plan on growing a lot of plants.

Easy to erect

To erect the cover of a polytunnel, you first need to dig a trench. The trench should be at least 10cm deep and should be large enough to stretch the polythene cover over it. When putting it up, be sure not to pierce the polythene. Stretch the plastic over the spine of the tunnel, then attach it to the lintel. Finally, pull it tightly.

A polytunnel cover is easiest to erect when the weather is calm. However, it is not always possible to choose a sunny day. If the weather is cloudy and windy, you should avoid erecting the polytunnel. Instead, you should wait for calmer weather before you start.


Choosing a durable polytunnel cover is crucial. You’ll want a material that won’t split and will last for years. The best covers are made of polythene, as they will be more resistant to tears and punctures. Buying a polythene cover with a five-year warranty is a good idea, as you can replace it if it is damaged. Small tears can be repaired using tape, but if you notice a significant tear, you should go for a replacement cover.

While purchasing a polytunnel cover, make sure to choose a model with a high hoop diameter, as this will give you a good idea of how strong it is. Usually, polytunnels with a 25mm to 28mm hoop diameter will be sufficient for most conditions. However, if you’re looking for a polytunnel that can withstand a wide variety of growing conditions, you should opt for a larger size, 32mm diameter polytunnel. Another great thing about polytunnels is that they are virtually maintenance-free.


Resistant polytunnels can provide excellent housing for different types of plants and crops. They are suitable for a variety of climates, and can also be used to grow various types of mushrooms. To improve your mushroom-growing success, you should invest in a quality resistant polytunnel cover.

The main benefit of a resistant polytunnel cover is the durability it offers. A polythene cover can last as long as eight years. It is easy to replace a damaged polytunnel cover with a spare. A small tear or rip can be repaired with tape but a replacement is recommended as soon as possible.

Polytunnel covers are also available in a range of different materials. Standard polythene film is a common choice, but if you’re looking for a more durable cover, you can choose Lumisol Diffused Polythene. It comes with a 5-year guarantee against UV degradation. You can even buy protective accessories to help your polytunnel last for years.


Polytunnels are a key element in many gardeners’ horticultural ranges, providing a safe and secure environment for growing plants. They are also very versatile, allowing for customization to fit a particular plant’s needs. While polytunnel covers vary in price, durability, and flexibility, the material they are made from is the most important factor affecting plant growth and development. The material also affects the temperature of the soil and air. Choosing the wrong type can result in increased heating costs and frequent ventilation.

Polytunnels are especially useful for growing plants that are difficult to grow outdoors. Typically, annuals are grown in polytunnels, because they perform better inside than outdoors. However, some perennials are also very effective in polytunnels, such as asparagus and globe artichokes. Growing them inside can provide you with fresh organic produce throughout the year.