advertisement. while you can build one on concrete pavers or over an existing level patio, perhaps the soundest way to support a floating deck is with pre-made concrete deck blocks that have notched tops designed to hold either 4×4 posts on end or 2×6, 2×8, or 2×10 lumber on edge . deck blocks must sit on a stable surface,
now you are ready to deck over the low-deck joist system as you would on any deck. layout the deck boards perpendicular to the joists. for synthetic decking, use a 16d nail to space the boards apart. for this low deck application you will probably not be able to use a hidden deck fastening system because there isnt adequate room.
if your deck is 6 feet or less with proper post to beam and joist bracing, it is a perfect candidate for a floating deck. this means you have options for your deck foundation that can save you time, money and effort. here are your deck footing options: surface deck blocks; engineered helical piers; ground spikes; ground screw anchored footings
our original plan was to build the one-level, step-up deck in between the four trees, but after trying to maneuver around the exposed roots, we learned our best solution was to shift the deck over and have the deck encompass one of our existing trees. this made our original strht forward square deck a little more complicated, but not too much.
if your rooftop has service pipes, an uneven surface or slopes in multiple directions, one of the major advantages of this pedestal paver system is it enables you to raise the deck surface over the service pipes and create a perfectly level, elevated roof deck surface. a pedestal paver system can raise the deck height from as little as 1/2 to over 3 feet if required.
how to build a deck over an existing patio slab with low clearance. determine the joist height for the system. to get the height of the joists, subtract the thickness of the decking from the distance between the top of the slab and the bottom of the patio door threshold. in our case this was 2-1/2 inches. you will probably need a minimum of 1-1/2 inches to do this project. anything greater than that is a bonus.
however, building a deck can become a time-consuming chore if you must dig holes and pour concrete to set your deck posts. fortunately, there's a simple, cost-effective way to build a deck without digging holes. construct a floating deck with precast concrete deck piers that rest directly atop the soil.
ground-level and rooftop decks, for that matter present unique challenges when it comes to water management and air circulation. the sleeper system enables adequate drainage and ventilation which, in turn, protects the deck boards from damage due to moisture build-up.
a deck does not need a handrail or stairs if its walking surface is under 30 inches above the ground. however, it's best to keep a floating deck as low as possible. even a fall from a height of 12 inches, or so, can easily twist an ankle or cause more serious injury.
26 floating deck design ideas. perhaps the biggest advantage when choosing a floating deck is that its size and shape is not determined by your house. of course, the deck can still be mounted next to the home itself, attached to an existing deck, or placed by itself. the sheer variety is its greatest strength.