Owatrol Primall is a fast drying interior primer for the blocking of unknown stains and the priming of difficult surfaces. Why should I use Primall? Owatrol Primall blocks and hides stains caused by water, fire and smoke damage, food (such as ketchup or mustard), felt pens and more! When used on porous surfaces, Primall will help to stabilise the surface and prevent shadowing on the finish coat. When used on smooth surfaces, Primall is ready to use without the need to sand. Primall can even be applied over lightly rusted surfaces as an anti-corrosion primer. It also improves the performance of the finish and makes applying the finish easier.   Ideal Uses for Primall Can be used on a wide variety of interior surfaces such as walls, ceilings, doors, cabinets, furniture etc. May be used on external surfaces if sheltered by roofing – Noton exterior facades, cinder blocks, stucco etc. Use on porous Surfaces; plaster, cardboard, cement, brick, wood, old coatings etc. Use on non-porous and smooth surfaces; aluminium, galvanised metal, PVC, plastic, varnish, ceramic tiles etc. Coverage: 10m2 per litre per coatTools: Brush, Roller, Airless SprayerSuitable for: Interior use (exterior if sheltered by roofing)Clean up: White SpiritDrying Time: 1 hourRe-coating Time: Porous surfaces; 1 hour | Non-porous; 2 hoursSuitable Surfaces: Porous & non-porous interior surfaces