Dot and dab calculator: boards and adhesive
Wall area and the usage of gypsum adhesive give the number of plasterboards and the bags of adhesive for dot-and-dab fixing.
Your figures
Result
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Building material catalogue — 5 materials in the catalogue
How we calculate it
What you enter
- Area (m²)
- Adhesive (kg/m²)
What to watch out for
The adhesive-dab method only works on a flat, sound substrate. Bigger deviations need a metal frame.
Formula
boards = ⌈ Area × 1.10 ÷ 2.4 ⌉
gypsum adhesive = ⌈ Area × Adhesive ÷ 25 ⌉ bagsThe site's engine is a 1:1 port of the Android app's code.
Frequently asked questions
How many boards does 1 m² of wall take?
The calculator divides the area by the area of one board and rounds up to whole boards. The adhesive is worked out separately, from the usage per square metre.
When can boards not be dot-and-dabbed?
Gypsum adhesive only works on a flat, sound background. Where the wall is badly out of true a metal frame is needed instead.
The same formula in the app LiczMat for Android uses the same engine offline — with the material catalogue and results saved into a project. Download