Covering a Polytunnel using the Trenching method | Fitting a Polytunnel Cover

The standard method of covering a polytunnel is to dig a trench around the base of the framework and bury the polythene cover in the ground. In this video we show you how to do this.
Dig a trench around the polytunnel framework - the trench should measure 14in deep x 1 spade width.
Roll the cover out down one side of the polytunnel and, holding the edge of the sheet, pull over the framework. Check the cover is central down the length and width of the tunnel - do not worry if the cover does not reach the floor on the ends of the polytunnel.
Starting at one end of the polytunnel, fix the polythene to the timber door frame lintel using a timber batten and nails. Pull the cover tight along the length and fix to the timber lintel at the opposite end.
Down one side of the polytunnel, starting in the middle, tension the polythene cover down into the trench and backfill the soil on top. Continue this process out to each end of the polytunnel.
Repeat this process on the opposite side of the tunnel – this time getting as much tension into the cover as possible. It is acceptable to stand on the cover in the trench to get the required tension.
At each corner, cut the polythene in line with the end hoop below ground level. Pull the excess around the end hoop to the door frame, twisting your wrist to create pleats in the cover. Fix the cover to the door frame using timber batten - the batten should be fixed tight up to the rebate batten.
Repeat this process at the opposite end.
At each corner, tension the cover down into the trench from the hoop to the door post.
Taking care, trim off any excess around the door frames.

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