Protectosil® WS 610

As hydrophobic agent for mineral building materials especially facades with high porosity e.g.

• Mineral rendering
• Sand-lime brickwork
• Hard-baked brickwork
• Roofing tiles
• Concrete surfaces

Product characteristics after application:

• Water vapor permeable, colorless
• Waterproofing with surface beading
• No formation of a sticky silicone film
• Effective on micro cracks up to 0.3 mm
• High reduction of water absorption
• High water repellent effect and good penetration in absorbent mineral building materials

• Substrates should be dry and clean prior to application to ensure deep penetration of the water repellent. Avoid application during strong wind or rain. It is not possible to apply Protectosil® WS 610 on a painted surface, as the mineral groups of the substrate must be accessible for the product to create a strong bonding, which is essential for good long-term performance.
• Due to its high water content, the impregnating solution is sensitive to frost and cannot be applied at sub-freezing temperatures. Outside temperature and surfaces temperature should be above 5 °C. Protectosil® WS 610 should be applied using low pressure pumping equipment with a wet fan type spray nozzle. Do not apply to a wet or damp substrate.
• On vertical surfaces apply the Protectosil" WS 610 in a flooding application, so the material runs down 15-20 cm (6 to 8 inches) below the spray pattern. On horizontal surfaces the liquid material should pond on the surface at least 5 seconds before being absorbed. A test patch should be applied to the substrate to verify coverage rate and application conditions. Protect glass, metal, plastic, and other nonporous substrates from overspray.
• Protectosil® WS 610 will not etch glass, but will leave a residue on nonporous surfaces. Most liquid delivery devices are suitable (e.g. airless spray guns). The material should not be atomized or applied with a brush. This can caused de-emulsification of the product. Temperature and type of substrate are factors, which will determine how fast the water repellent effect develops. The application must be carried out in sections, continuously and without break to avoid overlapping. The recommended concentration is 10% of active ingredient in water. This corresponds to a dilution with water (preferable demineralized water) of 1:4. Protectosil® WS 610 is not recommended to be applied undiluted. Minimum dilution rate should be 1:1. The quantity and concentration to be applied depend on the absorbency of the substrate to be treated and the desired depth of penetration. Porous substrates may require well over 350 mi/m of the water repellent. The exact quantity and the optimum concentration to be applied should be determined by a trial application. For red brick we recommend a consumption rate of at least 240 ml/m.
• Non-absorbent substrates cannot be treated, as drying may cause the formation of a sticky film. This film will harden over time and can be removed using chemical strippers, spirit of soap or solvents. Plants are to be protected against contact with the water repellent agent. Protectosil" WS 610 reacts with the boundary surfaces in pores and capillaries of the mineral surface and forms an invisible, water-repellent boundary surface compound. As possible previous treatments of the substrate might be unknown, it is always advisable to carry out a test to make sure that there are no undesirable accompanying effects.

• Protectosil® WS 610 has a shelf life of one year if stored in originally sealed containers.
• Protectosil® WS 610 should be stored between 3 °C and 40 °C.