Think about any wobbly table you might have set things on at a picnic or other outdoor gathering. A deck is really nothing more than a giant table with legs.

If the footing does not extend below the frost line, the footing will heave as the ground freezes and thaws. Even if you're setting deck posts in the ground, instead of on top of footings ...

The existing decking and wood deck railing was in bad condition, but the pressure-treated structure was still sound. If your ...