Sealer calculator
Lunik sealers
Sealers Calculator
Enter your area and choose the sealer. Each coat is calculated separately — mix only the coat you are about to apply.
Use Primer as a pre-sealer. With the solvent sealers (Varnish DSV and Varnish Plus),
a Primer pre-seal coat helps avoid roller lines, lets you keep a wet edge, and stops the microcement
darkening. Allow the primer to dry fully before applying the sealer.
Primer — pre-sealer
Water-based acrylic primer, applied undiluted as a pre-seal coat for the solvent sealers.
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Apply Primer undiluted as a single pre-seal coat. It goes a long way — don't over-apply.
Allow the primer to dry fully before applying the sealer.
Primer / pre-sealer
Water-based acrylic primer — union bridge for PU varnishes · ~100–150 g/m²
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Reference
Coat split rule. Where the datasheet gives a range (e.g. 100–150 g/m²),
Coat 1 uses the higher figure and Coat 2 the lower. Where it gives a single figure, both
coats are the same. Typical recoat times: FastProtec ~1–2 hrs; others often overnight.
Mix only the coat you are about to apply — weigh Part A and Part B fresh for each coat.
Never mix both coats at once.
Sand between coats. Use a very fine grit sandpaper — typically around
P320–P400 — to smooth the surface between coats.
Data sheets
Tap to open the manufacturer PDF.
Disclaimer: this calculator is a guide only. Coverage, drying times, and recoat windows
vary with substrate porosity, temperature, humidity, and application method. Always refer to the
manufacturer data sheets above and adjust on site as required.