How Do I Keep My Polytunnel Cool?

 


What can you do if your polytunnel covers are not the right type, or grade? Ventilation is a must. When you next shop for polytunnel supplies, try to get some advice about what you can use to keep cool your tunnel. Blocking the sun's rays out is another idea. There are polytunnel covers that are better for hotter weather conditions. Most UK vegetable growers never thought they would have to worry about keeping their polytunnels cool. However, increasingly, both private and commercial growers are concerned about their vegetables and fruit crops.

 

Should I Invest in a Polytunnel?

Summer 2022 has been so hot that many vegetable producers have lost nearly all of their crops. If you are finding it hard to shelter your crops from the sun, it is a good idea to consider investing in new forms of growing them. Perhaps growing your vegetables outside is a thing of the past. Polytunnel supplies are cheaper than they once were. Both private gardeners and commercial producers are considering investing in polytunnels. The right kind of polytunnel covers can even help to keep the excessive heat out.

 

Buying the Right Kind of Polytunnel Covers

How do I know what covers I need? It has to be said that things are changing as far as polytunnel supplies in the UK go. Once, the focus was on increasing and keeping the heat in the tunnel. Now, the trend is moving and requires a different way because of climate conditions. On top of your polytunnel shopping list, you should put green, or white covers. Both help to keep UV rays out while maintaining an ambient atmosphere for growing most vegetables and fruit. Yes, it is important to keep an eye on good ventilation. At the same time, you need to make sure your vegetables don't “fry” in the tunnel. You can only do that by making sure you reduce UV rays.

 

The Most Effective Covers to Reduce UV Rays

What are the most effective polytunnel covers when it comes to reducing UV rays? You would have thought the obvious answer would be green. To a certain extent that is true. Green does reflect UV rays very efficiently, but there is a downside to green covers. The colour green is one of the colours that absorb heat. As the temperature of covers can quickly become too hot, your crops risk overheating. That means you need to consider investing and think about other different polytunnel supplies that help cool your tunnel.

 

White Polytunnel Covers

White covers can reduce the need for buying other polytunnel supplies. When you install white covers, your tunnel is less at risk of trapping the heat. If you have ever touched a green polytunnel cover, you will notice that it may feel warm, or even hot to the touch on sunny days. That is because the warmth of the sun has become trapped inside the covers. During the night, it will slowly release. White covers are much more efficient when it comes to reflecting back the sun's rays thus reducing the heat inside.

In the future, it is likely that we will have to pay more attention to how we go about choosing ways of venting and the type of covers for our polytunnel crops. 


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