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I am considering purchasing a polytunnel to extend the growing season on my allotment, Probably 20 ft x 10ft. The basic tunnels seem to be around the £5/600 mark but if you add the extra ventilation / side rails etc. the price soon shoots up. Are these extras really necessary? I am in East Yorkshire. Any help / advice much appreciated.
Stick to the basics Mark, you don’t need side rails or extra ventilation. Tunnels, with doors at both ends, have plenty of airflow.
Side-rails, as opposed to digging polythene into a trench, allow entry to weeds, slugs and rabbits!Hi there,
I am also thinking of buying a polytunnel. Maybe 12 x 20ft. However I’m in Cambridgeshire and the temperature last week was 34 degrees in the shade. I’m worried about ‘cooking’ any delicate plants in the obviously hotter temperature in a polytunnel. Is a door each end really enough for this temperature? This would be on an allotment and I can’t always get there to water/open/shut doors. Any other suggestions to keep temp down in extreme conditions? Thanks for help
JanI bought my 25’x12’tunnel from Ferryman Tunnels in Crediton, Devon. Steph had suggested them to me. I did not get any of the extras that you mention but did get crop bars and thicker section tubes as my allotment is on a windy site in Exmouth.
Charles has an excellent discussion of poly tunnels in Learn > Articles
I have one 4′ opening door and one non-opening door, otherwise they are the same with a mesh (windbreak/scaffolding netting) cover. I have made frames for polythene inserts on the doors so I can have doors with all polythene, all mesh or half and half. Both doors have a 6″ gap above so there is always minimum ventilation and a route for insects. I can’t open and close every day so I vary the amount of ventilation according to the prevailing weather season.
John that looks impressive, you must be thrilled.
I envy you those straight sides.
Thanks for mentioning the article, it’s here
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