Rain water can damage mineral building substrates by eroding loose materials, and in a number of other ways. Many types of natural materials expand and contract with extremes of heat and cold which produce stresses that lead to micro cracks that allow the ingress of water. This water is able to dissolve sulphurous gasses to produce chemical corrosion and, under cold conditions, salts present in the substrates alter the freezing point of water – leading to differential layers of frost causing spilling of the surface. So it is essential to waterproof many building materials to minimise water and frost damage.
There is nothing in the world that protects masonry and concrete walls, paths and roofs from such day-to-day ravages of water and frost like Water Shield.
Treated surfaces are protected with a unique micron thick skin that penetrates microscopic pores and binds into the surface to repel water and other contaminants, such as grime, salt and mould. This ultra-tough membrane allows the substrate to dry by breathing out moisture in the form of vapour (gas) yet locks out water – for years and years.