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Primer is sold by the litre, but how much you actually use depends on how absorbent the subfloor is and whether you dilute it. This calculator turns your area and substrate type into the litres of concentrate — and the number of containers — to order.
Calculate the quantity →Enter your floor area and pick the substrate absorbency — it sets a typical consumption figure you can still edit. An absorbent substrate is primed at a 1:1 dilution, which halves the concentrate used.
Enter a floor area to see the quantity.
Quantity = area × consumption (halved for a 1:1-diluted absorbent substrate).
Figures are for one coat on a sound, dust-free subfloor; a very porous or damaged screed can need a second coat, which the field above lets you account for by editing the consumption.
Typical consumption per m² of ready-to-use primer, by substrate absorbency:
| Substrate | Typical consumption |
|---|---|
| Normal, sealed substrate | ≈ 0.1 l/m² |
| Absorbent substrate (1:1 diluted) | ≈ 0.15 l/m² diluted |
Work out the litres of primer concentrate and the number of containers, from your area and substrate absorbency.
Judge how absorbent your particular substrate actually is, or plan the flooring on top. Autolay's planner and robot handle the tiles, planks or laminate and their material list — not the primer, and not the subfloor prep.
Once the primer has dried, the free Autolay planner works out the tiles, planks or laminate for it — the material list and waste — from a photo of your floor plan, a BIM/IFC file or a 3D scan.
Open the free planner →