Top coat
If resin only levels or protects the surface, coverage per square metre matters most.
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How much resin for a worktop
A worktop may need a very small amount of resin for a top coat or several litres for cracks and voids. First decide whether you are covering a surface or filling volume.
Calculation
In this guide
Quick answer
How much resin for a worktop
A worktop may need a very small amount of resin for a top coat or several litres for cracks and voids. First decide whether you are covering a surface or filling volume.
The key is moving from intuition to measurable volume: dimensions, voids, allowance and only then the right resin system.
If the result is large, do not buy resin immediately — first check maximum layer thickness, pot life and working conditions in the TDS.
How to choose
For a thin coating, check product coverage in m².
For cracks, calculate each void by volume and add reserve.
Do not use a random casting resin as a kitchen finish without checking resistance.
Fillers
Deeper cracks need volume calculation. Seal the bottom because resin will find any leak.
Resistance
A worktop needs water, heat and chemical resistance, so it often ends with lacquer or a specialist coating.
How to approach it in practice
Step by step
Measure the real pour space
Do not rely only on table dimensions. Measure length, average width and planned pour height; for irregular wood, split the shape into simpler sections.
Convert volume to litres
Calculate in centimetres and divide cm³ by 1000. This gives an immediate estimate of mixed A+B resin.
Add process allowance
Add reserve for cups, leaks, raw wood, degassing and finishing. Small voids often need a larger percentage allowance than big pours.
Check product limits
Compare the result with the TDS: maximum layer, working temperature, pot life and mixing method. Litres alone do not tell you whether one pour is safe.
Save the result with the project
If you quote for a client, save volume, assumptions and selected resin in the project card. It makes price changes and production easier.
Common mistakes
Mistake 1
Calculating length and width without pour height.
Mistake 2
No allowance for cracks, knots, cups and sanding.
Mistake 3
Buying resin before checking maximum layer thickness.
Mistake 4
Mixing litres, kilograms and A+B ratios without checking density.
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Next step
Calculate before guessing
Open the calculator, enter dimensions and save the result with the Studio project. It is a better basis for a quote than a quick estimate.
FAQ
Should I calculate a worktop in litres or square metres?
A top coat is usually calculated by surface area, while cracks, voids and rivers are calculated by volume.
Is epoxy suitable for a kitchen worktop?
It can be, but only with the right system and often an additional heat- and chemical-resistant finish.
How much allowance should I add?
For small voids, at least 10% reserve is sensible because cup losses and leaks are proportionally larger.