A deck post should always be placed on top of footing, not inside concrete because it can break. … When concrete is poured around a deck post in this way, the post will rot due to moisture buildup by the soil.

Can I set deck posts without concrete?

Plastic piers require the digging, but unlike footings, there is no concrete involved. The pier is put into the hole and attached the post, giving you your deck without wasting hours installing footings.

Will a deck post rot in concrete?

A: Actually, your point is well taken. Simply setting the posts in concrete does create a condition that will accelerate rot in the bottom of the posts. … This allows any moisture that gets between the concrete and the bottom of the post to percolate through the gravel and away from the bottom of the post.