READY MIXED FILLER DECOR 1KG - RMFILL1 All Purpose Ready Mixed Filler is an easy to use ready mixed filler which is suitable for both interior and exterior use. Dries to a smooth but tough crack resistant sandable finish which may be painted, papered or stained. The product is designed for indoor or outdoor repairs to plaster, plasterboard, brick, render, wood, stone and most other building materials.