We have done several overlay jobs before using 2 3/8" pavers with bedding sand underneath. I am pricing a job where the existing slab is in good shape. The customer wants to update the look. The additional height is the concern where the walk meets the driveway. Right now, the slab sidewalk is lower than the driveway. Any overlay will bring the paver level higher than the driveway, but I'd like to limit the height difference as much as possible. So here is my question. Can I use a thinner paver, such as Techo-Bloc Blu 45mm and use construction adhesive or a mortar bed and use overlay poly sand for the joints? Thanks for your replies.