Take a look at our frequently asked questions on our garden buildings.
No, but to extend the life of your building we do recommend that its posts are sat on a padstone a minimum of 200mm2, to minimise the amount of moisture absorbed into the wood through the floor. We also strongly advise that the structure sits on a concrete pad or patio with a minimum of 100mm clearance all the way round from outside post to outside post.
When casting a concrete base, we would advise a minimum depth of 150mm. Please note that where bespoke buildings especially those requiring a damp proof course will be advised on separately.