Plaster of Paris: Casting 12.5 kg£11.00PriceWEIGHT12.5 kgQuantity ADD TO CART£11.00 (Incl. VAT) per Item.DESCRIPTION12.5 kg Bag of Plaster Of Paris GUIDEEXPERT INSTALLER For the making good of plasterware. Mix with water to a thin consistency and allow to 'pick-up' for making good. Plaster/Water Ratio: 100/40 – Setting time 20 minutes, workability time is roughly 15 minutes. MATERIALGypsum Based DELIVERIESEstimated delivery within 7-10 working days. Delivery Costs