Zinsser Watertite Waterproofing Paint - WhiteZinsser Watertite Paint is guaranteed to keep water out. Ideal for basements and cellars, this white waterproofing paint from has been specially designed to give an excellent finish to masonry. Zinsser Watertite waterproofing paint contains a biocide that protects the dried coating against fungal degradation for a minimum of 5 years. It can easily be applied to wet or dry surfaces creating a smooth, non gritty finish.