That's interesting Brian how do you apply it? Do you just put it on the edge of the plank we laying them and if so do you get much smudging on the deck surface/
Allan
Hi Allan,
I grind up a black lead pencil graphite into dust, then mix it with PVA. Turns into a thick black paste that you can glue the edges of planking.
Sandpaper off the overflow when dry.
.