Hi. I’ve just purchased my first house and the previous owner had installed some cupboards in the laundry (we suspect it is an Ikea laundry). As with the rest of the house every thing is quite nicely done and there is very little else that needs to be done to it. However he’s left a piece of board that fills the gap between the top of the cupboards and the ceiling unpainted. Luckily he left paint formulas for all of the rooms so getting paint to match is not an issue. What I’m having trouble with though is that where this board joins the wall there is some kind of rubber sealant and the paint I’m using refuses to stick to it. It just beads and runs away.
Is there a solution to this? Do I need a special treatment for the sealant?