How do you cover tile countertops with thin quartz?

How Do I Cover Tile Countertops With Thin Quartz? Measure the surface to be covered and create a template on graph paper. Remove the old surface and clean the counter, leaving it dry and dust-free. Set the quartz on top of the thin-set mortar bed, lining up the back side first. Fill in the joints with a joint sealer using a putty knife.