Duramax products are designed to be placed on either a poured concrete slab, or installed with a self-supported joisted floor system similar to a deck.There are multiple options to attach our floor system to the earth. The most popular method consists of simple poured or pre-cast concrete piers. For small, unfinished units, a 4×4 skid foundation may suffice.Because every site is different, other than for our pre-configured selections, Durasheds does not directly quote the cost of foundations or pour concrete. However, this is a service that the majority of our professional installers provide, and they will work with you directly to get the best foundation for your site in an efficient way.For our pre-configured selections, we offer a turnkey foundation system at a fixed price provided your site is level to within 6″ across the footprint of the Building.