I am re-tiling a bathroom but have a situation where about a one sq ft of plaster has come revealing block work. I have used Thistle undercoat plaster as a base and left 2-3mm room for a finishing coat before I tile over it. What options can i use as a final finishing coat given that its only a small size that needs covering. Would Toupret interior filler suffice? or must it be finishing plaster.
Thanks.
Thanks.