Is it necessary to prime the slate before painting and with what?
Search doesn't work. There is a lot of information on the Internet about painting itself and nothing at all about primers intended specifically for slate. The bottom line: the border of the balcony is trimmed with slate, it is necessary to paint it in the color of the facade of the house. There is a wide choice of paints, but there are concerns that without pre-treatment a durable coating will not be obtained. We will paint with water emulsion. This is not our choice, but the advice of outsiders, so it’s not a dogma - we can “move” to another finishing method.
