The effect of hydrophobic protection on the exterior walls of buildings

The researchers recently studied the hydrophobic protection of three hydrophobic products on three substrates (stone, ash and external insulation composite system -ETICS).
nanostructure dispersions (H NST) based on silicon and titanium dioxide; To determine the effectiveness of hydrophobic treatment, samples of untreated and treated wall coatings were sampled and tested using different laboratory tests

. The results showed that all products significantly improved the hydrophobicity of the substrate, thereby reducing capillary water absorption (98%), the permeability of karsten tubes (99%), the drying index (39%) and the higher water-reporbent contact angle (283%).
application of ash mortar
hydrophobic materials with optimal initial performance also has a negative impact, resulting in a 227% increase in resistance to water vapor diffusion. In the wall coatings evaluated, the ash mortar appears to have the best initial performance after applying all types of hydrophobic materials. In general, hydrophobic product HSilox has been proven to be best suited for use in mortar mortar, while HNST is more suitable for stone substrates.
the study was published in the Journal of Coating Technology and Research, September 2019, volume 16, Issue 5, pp. 1379-1388.