Can a paver sitting wall be put on a paver patio?

Question

I have a paver patio that was put in my backyard 16x20. I was wondering if I would be okay to install a sitting wall made out of pavers on top of the paver patio that is already there. I know it is custom to build a wall on the ground with a standard paver base (gravel, stone) but since that was already done for the patio can I install the walls directly on the existing pavers? Would I need to create any support for the wall other than adhesive?

FYI I live in Ohio so I will be experiencing freeze/thaw.

Answer 1

Well chances are you can build a wall. If your patio was built right, it was placed on the proper amount of gravel. You would likely know if it was built on gravel if the patio is 5+ years old and it has not heaved much. As long as you are not building a wall higher than 4 or 5 layers, there should be plenty of strength. You should not need any other support for a shorter (5 layer) wall besides masonry construction adhesive between each layer.

Answer 2

base for a paver patio is minimum 4" crushed stone properly compacted, minimum for seating wall is 8" and that is in ideal soil composition, which i believe most of Ohio would have higher clay less sandy which would be un-ideal so even if patio was installed "properly" you still would be well short for the weight you would be adding. Not even taking into consideration the freeze thaw you experience in Ohio. also to consider the added weight will be on the edge of the patio (the most vulnerable part) essentially minimizing/eliminating interlock, which makes the interlocking pavement system effective and stops pavers from settling. highly would recommend against it