This is a follow up for this question Deck footing 2" above the ground -does that apply to a patio? What is the reason behind the 2" restriction?
I decided to have my concrete footing under the patio and covered with gravel (and possibly bricks on top of it. These are 10" sonotubes on top of which I installed these:
The concrete footing and part of the pipe side of the support will be under the patio bricks. I would like to seal the top side of the concrete pier with some sealant (epoxy spray?) . Is that a good idea? I will also try to complete cover the screws and the foot of the support in one more layer of epoxy to make sure they will have a long life