Description : I've already applied about 6 coats of primalex, but the stains always come to the surface. The gutter is already repaired, it no longer flows, but the wall cannot be repainted. What with this?
Last Answer : Penetrate (for example with this - http://www.primalex.cz/index.php?location=27), the penetration will not allow rust from the "base" to seep into other layers of the painting.