Ronseal Super Flexible Wood Primer & Undercoat utilises a highly flexible resin to improve the performance of your exterior topcoat finish. It moves with the wood to maintain adhesion to help prevent cracking and peeling of the topcoat. It adheres superbly and both primes and undercoats in one, providing the ultimate base coat for any topcoat. It also has an advanced stain locking mechanism that creates a barrier stopping extractives and tannins found in resinous woods from discolouring your paintwork. Ideal for priming any exterior hardwood including Mahogany, Oak and Teak. Use on exterior wooden doors, window frames, cladding and fascia's. Also suitable for interior wood.  Coverage: 10.0m² covered per litre. Number of coats: 2. Application: Brush. Drying time: 2 hours.