Opening your workspace…
Use the net surface area and average thickness to find the wet plaster volume, then split the dry ingredients into cement and sand.
Follow the method, check the example and review the assumptions.
Wet volume = area × thickness. Dry volume = wet volume × dry factor, divided by the entered cement:sand parts.
Ten square metres at 12 mm is 0.12 m³ wet plaster. With a 1.33 factor, dry ingredients total 0.1596 m³ before wastage.
This illustrates the method; your inputs determine your result.Yes. Ratio and dry-volume factor are editable under assumptions so they can match the project specification.
No. Putty is a separate finish calculated from product coverage and surface area.