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EWI-333 Silicone Silicate (SiSi) Primer is a deep-penetrating primer used to prepare the substrate prior to the application of Silicone Silicate render. It bonds dusty surfaces, regulates absorptive capacity and reduces the required quantity of render – all without compromising breathability. SiSi primer can be pigmented according to match the colour of the render.
Composition: Potassium Silicate dissolved in water as well as acrylic resin, quartz aggregate and pigments
Bulk density: approx. 1.50 g/cm3
Application temperature (air, substrate, materials): from +5°C to +25°C
Coat drying time: approx. 4 hours
Time to leave before rendering: approx. 24 hours after priming
Quantity to be used: approx. 0.2-0.3 kg/m2depending on substrate structure and absorbency)
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