Deck blocks for floating deck

642 Views 5 Replies 4 Participants Last post by ront02769, May 5, 2016

RND

Discussion Starter · May 4, 2016

I am building a low level floating deck using deck blocks and to line it up with an existing attached deck I have to dig the deck blocks into the ground about 5 inches.
I would like to minimize any heaving in the winter and my thought was to put about 4 inches of gravel underneath them and then an inch of leveling sand to help get the water away.
Is this overkill since they are designed just to basically sit on the ground?

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joecaption

· #2 · May 4, 2016

Unless this is a temporary deck forget about the deck blocks.
How low is this deck going to be?
Low level decks tend to rot out because there's no way for them to dry out.
There needs to be at least 12" of air flow under the deck.

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joecaption

· #4 · May 4, 2016

Need real piers set below the frost line for this to stay level.

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