Thick pvc trim 3 16 x 3 1 4 in.
Build a low deck over concrete patio.
If the damage to your concrete patio appears too far gone consult with a local trexpro.
First laying deck boards on top of the existing patio without any joists to secure it from below will be free to move twist or just feel bouncy as you walk on it.
Now you are ready to deck over the low deck joist system as you would on any deck.
You can build a raised deck over concrete base in two ways.
One is to demolish your concrete patio completely and then build a wooden one as the replacement of concrete base.
Lay the joists across the concrete perpendicular to the house wall at 16 inches on center.
They will run perpendicular to the decking material.
Cracks and craters with minimal growth may still be covered without issue but be cautious if an area of your patio sinks year after year.
How to build a deck over an existing patio slab with low clearance.
Layout the deck.
Check the drainage of the concrete patio.
Evaluate the concrete s condition.
How to build a wood deck over a concrete patio step 1.
For a good conditioned concrete base building a raised deck is easy.
Or you can use the slab as the base of the deck and use wood as the top of this deck.
Concrete screws decking flashing tape plastic shims self leveling compound treated 2x4s.