Deck Foundations - Alternative Ways To Support Decks - DecksGoYou all know how much work and effort and money it takes to install traditional concrete deck foundations - or footings. Not to mention ... If your deck is 6 feet or less, with proper post to beam and joist bracing your deck is a perfect candidate for a floating deck. ... But they usually require heavy machinery to install and are most common for foundation repair to homes and all of this requires close review by engineers and of course the cost reflects this as it is a top notch high end solution.