Its dirt resistant properties also help to maintain the coating’s aesthetic features, and with the benefit of being rainproof in just 1 hour you can complete the job even if the weather forecast is not reliable. Masonry paint can be used in more places than you may think. With microseal technology, our masonry paint ensures that surfaces are dirt resistant, breathable and waterproof – meaning that homes have flawless coverage and protection for longer. Sandtex® Microseal® masonry paint is microporous and provides sealing attributes that protect the coating against water ingress. This means that the coating allows the surface to breathe and moisture to evaporate whilst at the same time protecting the coated surface from water penetration.