how much plaster do I need?

multiply your wall length x height

40 ft wall length, 10 ft high walls  = 400sq ft.

calculate your square footage
use our spread ratio charts.

If you want to use Grassello, first measure length of each wall including doors and windows. Find the total square feet of the wall(s) by multiplying ceiling height by total wall length.

Example 40’ wall length and 10’ ceiling height = 40’x10’

= 400’ square feet.  You'll ned 20kg or 5 gallons.



Subtract areas that will not be covered.

Standard doors are about 3 x 7 feet or 21 square feet

Standard windows about 3 x 4 feet or 12 square feet.

    Its suggested that you add 10% for product waste

How to read spread ratio charts!