We have combined years of experience and our state-of-the-art technology used for garden centre buildings to assess the wind and snow loadings for our polytunnels in certain parts of the country.

Though a comprehensive set of structural calculations cannot be provided for a polytunnel structure, the map opposite shows our recommendation for whether you should choose 5ft or 6ft spacings. Note this is only a recommendation, should you need any further assistance please contact our sales department.