Deep Penetrating Primer Polysil TG 500
A thin fluid product based on a polymer & silicate combination that increases the chemical & mechanical resistance of masonry building materials. used as a liquid hardener for sealing slurries, as well as a penetrating primer for damp & salt laden substrates pre the application of NB 1 Grey.
Koster Polysil® TG 500 is a thin fluid product based on a polymer and silicate combination. On salt-containing and on damp substrates, it leads to a reduction of the pore volume and thus decreases the danger of new development of salt efflorescence.
It also increases the chemical and mechanical resistance of mineral building materials. Depending on the substrate, the product penetrates the surface up to 2 cm deep.
Koster Polysil® TG 500 also has strengthening and hydrophobing properties. The material is compatible with mortars, plasters, cementitious slurries and with concrete.
Deeply penetrating priming:
Koster Polysil® TG 500 can be brushed or sprayed on. During the curing time, the surrounding and substrate temperature must not fall below 0 °C. Salts which came through the surface of the substrate during the curing process must be removed by brushing. After full cure, no more salts will come to the surface.
Waterproofing from the inside using rigid sealing slurries In order to construct extremely resistant coatings using Koster NB I Grey, the substrate is first primed with Koster Polysil® TG 500 and is, after approx. 30 minutes, covered with Koster NB I Grey (without addition of Koster SB-Bonding Emulsion “Concentrate”).
Immediately after applying the slurry, it is coated with Koster Polysil® TG 500. After a short setting time, another slurry coat is applied which is then immediately hardened with Koster Polysil® TG 500.
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