Anchoring Aluminum Pergola To Paver Patio
Hiding the concrete with a layer of sand should be fine. I would want to make sure the concrete is not cupped (holding water) but slightly domed so the water will drain. Other than that I am glad you read the instructions for anchoring, I though at first you just wanted to glue it to the pavers , that would not be good and it would end up over the rainbow in OZZ with a good wind. Your plan to anchor and have a layer of sand on top sounds good to me.