Compare (3 max) Qty. All sizes quoted are approximate. Our models are available as either apex wooden or metal sheds, or pent sheds. We do recommend that, if you are unable to assemble the plastic shed yourself, you use a reputable tradesman. Should you be carrying out the installation yourself, there are a couple of important guidelines to adhere to: always prepare a solid, level base, such as concrete, for the shed to sit on; ensure the base is a minimum of 75mm thick and 100mm greater in size than the shed’s footprint; a sheet of heavy polythene placed under the base will help prevent dampness rising from the ground; and check through all the parts carefully and thoroughly against the provided list before commencing the build. £199.94.