Building & renovation
How much microcement do you need per m²?
How many kg and packs of microcement for your floor or wall — from m², consumption per m² and pack size.
Quick answer
Microcement is sold by weight, not litres — total powder use for base + colour coats is typically **2.5–4 kg/m²** on prepared substrates. We default to **3 kg/m²** with 10% waste. Worked example: bathroom floor **12 m²** → 12 × 3 × 1.1 = **39.6 kg** → **8 × 5 kg packs** (or 2 × 25 kg if your supplier only sells large buckets).
Advanced settings
Material needed
82.5 kg
- Packs to buy
- 17 × 5 kg
Microcement systems are applied in thin layers (base + colour coat + sealer sold separately). Total powder consumption is typically 2.5–4 kg/m² for walls and floors — we default to 3 kg/m² for a two-coat build. Absorbent substrates and rounded edges increase use; edit kg/m² to match your brand TDS.
How it works
Sealant and primer are usually separate SKUs — this tool sizes the cementitious powder only. Curved transitions and very absorbent screeds push consumption up; edit kg/m² to match your system datasheet before ordering. Substrate prep often needs a floor grinder buy or rent — belts and diamond pads are recurring buys, not the machine.
Frequently asked questions
How many kg of microcement per m²?+
Most brands quote 2.5–4 kg/m² for the full build (not including sealer). Floors with rounded coves and multiple colour layers trend toward the upper end. Always confirm on the TDS for your exact system.
Do I need a primer under microcement?+
Yes on most substrates — primer bonds the base coat and controls suction. Primer litres are not in this kg calculator; budget separately or use the bonding-primer paint tool for rough litre estimates on walls.
5 kg or 25 kg packs?+
Small rooms and touch-up batches suit 5 kg units; whole bathrooms and open-plan floors are cheaper per kg in 25 kg buckets. The calculator rounds up to whole packs — leftover sealed powder stores for repairs if humidity is controlled.
Walls vs floors — same consumption?+
Similar kg/m² in theory, but floors often get a thicker base build and more abrasion-resistant top — some installers add +10–15% on floors. Edit the consumption field if your supplier differentiates wall vs floor systems.
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