the symbol ofStrengthFind my product →Enter the wall area and the plaster thickness you're applying — we'll work out how much Ready-Mix Plaster you need and how many 40 kg bags to buy, with a wastage allowance built in.
Internal walls are typically plastered at 10–12 mm; rougher external walls at 15–20 mm. Thicker plaster uses more material per m².
Supplied in one standard pack.
Extra for spillage, mixing loss & uneven surfaces.
Consumption is estimated at about 2.2 kg of plaster per m² per mm of thickness, so a 40 kg bag covers roughly 15–20 sq.ft at 10–12 mm — matching the product datasheet. Actual usage varies with surface roughness, wall undulation and workmanship; always confirm against the datasheet and allow for wastage.