Once the cover is sitting nicely, you can burry the sides of your tunnel cover in the surrounding trench, making sure you keep things tight and don’t get any unwanted pleats in the cover. While burying the cover, keep stamping the earth down to really pin the cover securely. 

Once you have finished stamping down the surrounding ground, get some good, heavy stones, bricks, or similar and place them all the way round the base of your tunnel. As yiou can see in Lynne’s photo, these rocks really add some weight to your build and keep the earth around the tunnel from being weakened by rain etc.


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Building a Polytunnel Stage 4