You can reduce the amount of paint you buy by accurately estimating the amount of paint you will need, avoiding wastage.
- Calculate the surface area by measuring the length multiplying it by the height or width.
- Eg. A ceiling 10 meters X 4 meters = 40m2
- Subtract 1-2 square meters for each window or door.
- Multiply this by the number of coats needed. Allow for any primer coats, or undercoats needed.
- Eg. 40m2 X 3 coats = 120m2
- Divide this by the coverage rate for the paint. Eg. 12m2/L
- 120m2 / 12 = 10 litres
- This is the total number of litres needed for this surface.
- Allow 1.5 litres for three coats on a standard door
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