Hydro Shield S

DUBOND’S HYDROSHIELD S is a silicone concentrate that is based on silane/siloxane. It is colorless, hence maintains natural color of the substrate. Dilute solutions of HYDROSHIELD S in organic solvents serve as high-quality general purpose water repellents for impregnating and priming mineral and highly alkaline substrates. After application, HYDROSHIELD S reacts with the atmospheric moisture or pure water in the substrate, there by generating the active ingredient and liberating acetate. The active ingredient greatly lowers the water absorbency of the substrate. Since neither pores nor capillaries are clogged, the substrate retains a Damage to facade is always due to moisture, rain and surface water.
Salt water damage occurs in porous building materials, only when moisture is present. The sources of salivation are deicing salts, rising dampness and reaction between the binder used in facade materials and paints. In addition to that, building materials have an inherent salt content. The moisture transports this salts to the surface of the substrate where it crystallization out. Salts are not only deposits on the surface but it cause the hydration and crystallization pressure. This builts up finally led to embrittlement and crumbling away of the surface. Acid rain i.e. sulphuric acid is by product in the form of sulphur dioxide by burning of industrial fuels, bound to particle of dust and droplets of water, is the primary cause for corrosion. Sulphuric acid reacts with the carbonates, the binder in mortars, lime washes, concrete, stones etc.

Attack by moss and micro-organisms such as fungi and algae which are consequence of protected wetting of facade surfaces. The above mentioned facade damages can be diminished by impregnation with water repellant agents. The main aim of this is to form “hydrophobic” or dry zone on surface. The dry zone are not ideal for biotopes mosses, fungi, algae. The silicon molecules of Hydro shield do not clog the pores and so the surface retains its permeability to water vapour and “breathes”. Therefore treated buildings do not suffer from condensation damage. Buildings treated with Hydro shield may absorb very little water and can release it again readily in dryer conditions..

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