Be sure to slope the new patio away from the house a tad.Plus I get a shiny red concrete mixer out of it and I’ve already decided on another project. I have this crappy uneven paver patio outside our back room. There’s maybe 22 2x2 pavers on it and it’s always bugged me. I know there’s compacted crushed stone underneath them already so I figured I would advertise them on Kijiji free to anyone that wants to pick the pavers up (and remove them) then get some terracotta concrete pigment and pour myself a nice level patio. Just need to see what expansion joints to do and whether I should pattern the surface to make it look less like one big slab. Then, depending on how much that makes me swear I have an uneven paved passageway from the front to the back yard that could do with the same treatment. Walk before I can run though….pour the sonotubes first.
½" expansion joint against the house will work fine.