Revitalize your exterior surfaces with Sadolin Superdec Satin, a durable, water-based wood protection suitable for a variety of materials, including wood, plastic, steel, cladding, concrete, masonry, and doors and windows. Self-priming and undercoating. Provides 10 years durable protection with a flexible finish for exterior wood. For new or bare wood: Timber exposed to the weather for 4 weeks or more should be mechanically sanded back to a clean, sound surface. Wipe down bare timber with a cloth dampened with methylated spirits. Do not use white spirit. If using a non-durable timber, treat with a clear preservative (e.g. Sadolin Wood Preserver) before using a woodstain. Previously painted or varnished surfaces: Strip bare and treat as new wood. Previously woodstained surfaces: Any loose, flaking coating should be removed by use of a scraper and abrasive paper. Any grey denatured timber should be mechanically sanded back to a clean sound surface. Any mould and algal growth must be eradicated using a suitable fungicide/algicide. Wash surfaces with a milk detergent and rinse with clean water. Allow to fully dry. Wipe all surfaces with a cloth dampened with methylated spirits.