External
RSR 421 is an extremely durable outdoor finish finish coating consisting of special water-based, breathable, water-repellent and air-resistant siloxane adhesives with a rustic finish for the exterior finish. In addition, special molecules protect the product from the growth of a wide range of mold and algae species.
It is compatible with all types of coatings, dehumidifying plasters and can be applied in any case where high perspiration, low water absorption and final high efficiency are required at the same time. Available in granulometries 0,6-1-1,5-2-3 mm.