Fermacell Joint Filler is available in 5kg or 20kg bag depending on your needs. This joint filler is a synthetic-resin modified, gypsum-based joint filler for the manual filling of joints with or without joint tape. The specially developed formulation allows extremely high joint tensile strengths to be achieved. Fermacell is used to join together square edge boards by creating high tensile joints. It fills the 5-7mm gap that is left between the boards. It can easily be rubbed down after application for a smooth and flawless finish that is then ready for decoration that screws into 250mm wals and has low emissions. For any further information regarding this product or any product in our range, please speak to a member of our team today. Type Filler  Weight 20kg Bag Size 20kg