Two sides of the trowel are notched with either “V” or “square-shaped” notches
Use a square-notched trowel for spreading thin sets on horizontal surfaces
Use V-notched trowels for spreading adhesives on vertical surfaces
Oval notches give you a better tile adhesion, developed in conjunction with the NTCA technical committee
Used to spread adhesive or mastic on the base surface before laying tile or other floor coverings
Notched trowels provide a bead (rib) pattern, which ensures both uniform thickness of material and full contact with the tile after beating in
Small-sized, smooth-backed tiles like ceramic mosaics do not require as much setting material for bonding as do larger tiles with patterned or uneven backs