Hi all, I have a concrete patio that is 12x16 and is pinned to the foundation of my home. I would like to do a 16x20 paver patio that would cover the entire old slab and extend out 4' on each side. Can I leave the existing and compact base for the rest up to the existing concrete and then lay fabric, 1" of sand and then the pavers? or could I have problems doing this? please take it easy on me as I have just started thinking about this project and would like to do it in the spring. I am in southwestern ohio and have freeze/thaw cycles if it makes a difference. thanks for any help in advance.