Fermacell Bonding Compound 20kg Bag is used for dot & dabbing (or direct bonding) Tapered Edge fibreboards to create high tensile joints. The compound boasts a good filling ability with low shrinkage during drying and no slumping after application. It is easy to apply but ensure that surfaces are clean, dust free and dry to allow the adhesive to be fully functional. The bonding compound should be applied to the board and not the supporting surface. Apply Fermacell Bonding Compound dabs at 400mm or 600mm centres vertically to suit the board width, a continuous ribbon of Fermacell Bonding Compound should be applied around the perimeter of the board where they are to be fitted to external walls and around door/ window frames and sockets. It is not recommended for outside use where moisture is prevalent. For any further information, contact a member of our sales team today . PLEASE NOTE :- Returns policy for plaster products: Weight 2.5kg Bag Size 2.5kg