Shed bases (recommended) are used under your shed to protect the floor and lower part of the shed. Timber bearers will support your shed and all the contents of the shed. Pressure-treated timber is used to ensure the bearers will last you for many years protecting them from rot and insect attack. Bearers can be used on a level area made from concrete, paving flags, stone chippings etc. If you are unsure please check with us.