Zinsser Ceiling Pro 5-in-1 is based on ground-breaking paint technology that effortlessly provides a perfectly finished ceiling every time It adheres to any surface seals stains including water and smoke primes and finishes whilst bridging hairline cracks In addition Ceiling Pro 5-in-1 contains a biocide that protects the dried coating against fungal degradation prolonging the life of the painted ceiling These outstanding features combine with a 1 hour recoat time low odour and ultra low VOC content Suitable for both bare and previously painted ceilings