I would like to put porcelain tile on my covered patio (40x12 feet). The patio is a concrete slab. It does get wet when the wind drives the rain into the patio. I would like to tile it because there are a few small lateral cracks in the concrete slab of the patio.
The concrete slab had originally been covered with a 1/16" plastic coating that looked like tile. When the plastic overlay eventually faded, it was painted with patio paint. That was 7 years ago. The paint is in good shape and is adhering well to the plastic coating. I would use slipsheets over any cracks.
Can I put the new thinset and tiles over the layers of plastic coating plus paint? It looks clean and solid. I don't see how I can remove the plastic coating. It's like rock.
Thanks for any input