Eco-friendly, silicone-based, micronized acrylic water primer, specially designed for strong adhesion and penetration on weak surfaces, due to its extremely low particle size (<0.05 µm). It is certified according to the criteria of the Ecolabel Awarding Council of the European Union. It is used for both exterior and interior surfaces. It presents extremely low water absorption, waterproofs surfaces, has high breathability and excellent alkali resistance. It is an ideal substrate for any surface (plaster, concrete, cement mortar, marble mortar, gypsum boards, inferior quality paints, etc.) that is to be painted with water-soluble paints (plastics, acrylics, elastomers, cement paints, relief, etc. ). It is user-friendly and environmentally friendly because it does not contain ammonia or other dangerous substances such as aromatic hydrocarbons, free formaldehyde, heavy metals or alkylphenol ethoxylates. It is certified with Indoor Air Comfort GOLD, the world’s most stringent indoor emissions rating system. Certified Ecological and lightly colored IAC GOLD, Category A+ in indoor air quality. Strong adhesion & penetration. Ideal for any surface before painting with water-soluble paints.