How to prevent your outdoor chalkboard from rotting.
As far as I know there is no exterior chalkboard paint products out there. Please tell me if I’m wrong.
So instead of using chalkboard paint like I did I would make my own using exterior
paint and tile grout. You can find the recipe from Martha Stewart herself right here
. It’s simply 1 cup exterior
paint mixed with 2 tablespoons tile grout.
This should ensure that the front of the board stays weather proofed.
Now don’t forget the back of the board
. I think that was my biggest mistake. Be sure to cover the back and sides
of the board with exterior
paint. When I removed my chalkboard the back of it completely fell a part.
I would still add the wood frame to the chalkboard. I think this held the rotting wood together a bit longer. It also prevents the plywood from bending and bowing.