Sadolin Superdec - Sadolin Superdec is a water borne, highly durable opaque finish for cladding and exterior joinery.Sadolin Superdec erodes naturally by weathering, thus ensuring the coating remains flexible and resists cracking, peeling and flaking. Sadolin Superdec can be applied to new and previously painted or stained surfaces, and is ideal for use where a complete change of colour is required or where the existing surfaces has become weathered and uneven in appearance. To minimise resin and extractive discolouration of the coating (particularly with white and pale shades of Superdec) a blocking primer should be used