Can the product Neutral Recol® Plaster be used as waterproofing?
Not. In spite Neutral Recol® Plaster is a product with high resistance to moisture, it is not a waterproofing product and also does not represents the final solution to this type of problems. Seal the moisture with a specialized product; then apply Neutral Recol® Plaster and then a water based or alkyd paint as final finish.