Clear masonry coatings can be applied to porous brick and stone walls. They are clear colourless solutions which when dry, do not change the original aesthetic appearance of the wall.
The primary use for clear masonry coatings is to act as a waterproof protective barrier for the prevention of penetrating damp.
Although these clear masonry coatings prevent water droplets from penetrating the brick or stone substrate, their molecular structure allows water vapour to pass out of the wall, maintaining breathability.