If the countertop is delaminating in areas the tile will not hold.
Tile over laminate kitchen countertops.
Cover the laminate optional.
Use contact cement to reapply the laminate so that it firmly sticks to the mdf.
Spread glue on the countertop with a notched towel starting at the outer edge.
To square off the corners of the round cornered laminate countertop mark a line 3 1 4 in from edge.
To complete the undermount look apply thin set to the schluter tile edging trimand place the tile into the trim edging.
To prep the countertop to receive the tile round corners need to be squared off and the countertop surface has to be sanded to provide a better surface for the tile adhesive.
3 8 spacing with 3 8 notched trowel.
Tile and natural stone as well as other laminate surfaces can serve as an adequate base for your laminate tiles.
Clamp the level down to use as a cutting guide image 1.
Begin placing the tile from the center of the counter out pressing back and forth and side to side on each tile to secure the thinset.
For granite tiles you will want a square 1 4 inch notch.
In my case the tile was 3 4 so the trim supported 3 4 tile.
Use a trowel to create beads all through the adhesive.
Remember the thickness of the tile should match the thickness of the profile.
While the point of installing tile over laminate is to cover up the poor laminate there is a limit as to how bad that laminate can be.