What thicknesses are plasters applied?

Undercoat plasters are usually applied at 11mm and most finish coat plasters are applied at 2mm. These thickness' are nominal and determined by deviations in the substrate. Recommendations for the application thickness of Thistle plaster products can be found in our selector guides: ThistlePro Selector Guide, Thistle Essential Selector Guide. The charts also include coverage, setting times, and other application information.