Microcement Calculator

How it works

base = area × base coats × base kg/m² × (1 + waste) · finish = area × finish coats × finish kg/m² × (1 + waste) · primer = area × 0.12 L/m² · sealer = area × 0.10 L/m² × coats · mesh = area × 1.10

Microcement is a polymer-modified cement coating troweled on in thin layers — usually two coats of a coarser base, often with fibreglass mesh embedded in the first one, then two coats of a fine finish, all over a primer and protected by two or more coats of a water-based polyurethane sealer. Total thickness is only 2–3 mm, so quantities are driven by consumption per coat, which depends on the brand, the grain and how tightly it is troweled. The calculator uses typical rates of 0.6 kg/m² per base coat and 0.2 kg/m² per finish coat; replace them with the figures on your product data sheet.

Worked example

A 20 m² floor with two base coats at 0.6 kg/m², two finish coats at 0.2 kg/m² and 10% waste: base 20 × 2 × 0.6 × 1.1 = 26.4 kg, finish 20 × 2 × 0.2 × 1.1 = 8.8 kg, total 35.2 kg of microcement. Add 2.6 L of primer, 22 m² of mesh and 4.4 L of sealer for two coats.

Sources: EN 13813 — Screed material and floor screeds (CEN) · PCA — Concrete surface finishes

Frequently asked questions