British Gypsum Thistle Multi-finish is designed for use on a wide range of backgrounds from low suction (plasterboard) to medium-high suction (gypsum or cement-based undercoat plasters). Also suitable for use on dry undercoats (dampen background first) and damp undercoats. Providing a smooth, flat and high quality finish Thistle Multi-finish is easy to use and only requires the addition of water to prepare it for use. It covers an area of 10m² when skimmed with a 2mm layer. For any more information on this or one of the other products in our range please contact us today. and a member of our team will be happy to assist you further, PLEASE NOTE :- Return Policy on plaster products: Due to the volatily of plaster products, once delivered or collected we regret that we are UNABLE to accept materials back for credit. .