Portland cement concrete is widely used in the world's construction due to its durability. However, it comes with limitations; concrete is a porous material and its level of compactness depends on the water/cement ratio employed to prepare the mix. The porosity within its structure provides an access route for moisture and for dissolved pollutants contained in the moisture.

The main reasons concrete deteriorates is due to the presence of water in the following forms:

The Planiseal WR 100 is one of the many Mapei products that can prevent the main causes of concrete deterioration. It is a ready-mixed pure silane-based, hydrophobising, protective, migrating liquid applied to the surface of reinforced concrete structures exposed to aggressive agents. 

Planiseal WR 100 travels through the capillary pores and penetrates deep down into concrete to form a protective, hydrophobic coating that, over the years, helps to prevent the degradation and detachment of concrete. It drastically reduces water and chloride absorption and helps to prevent corrosion of the reinforcement steel in concrete. It also helps to prevent deterioration of new and repaired concrete caused by freeze-thaw cycles and de-icing salts and increases its durability.

It can be applied directly on both vertical and horizontal surfaces of porous and compact concrete, on new concrete and on concrete that has already been repaired or with no evident signs of detachment from the reinforcing steel. Application: by low pressure airless spray on large surfaces or with a roller for smaller areas.