A water-based dual purpose primer and undercoat for use on MDF surfaces both inside and outside. Up to 13m² per litre Application information Coverage: 13m² per litre Touch dry: Dependent upon temperature / humidity Recoatable: 2 hours Thinning: For sealing new or bare surfaces: add up to 1 part clean water to 5 parts paint. Key Benefits For MDF surfaces inside and outside. Quick-drying. Low odour. Primes and undercoats in one.