Quantity Calculator

Want to work out how much filler you need for your skimming or finishing job? Use our calculator to estimate the quantity of product for your project, in less than 60 seconds. Enter the surface area of the wall or ceiling to be covered, then choose your product by first selecting the category (Interior, Exterior, Wood, Problem Surfaces or Joint, Skim & Fill). If you do not know the surface area, you can enter the height and width of the surface(s) to calculate an estimate the surface area.