Four years ago I painted a scrap piece of plywood with chalkboard paint, framed it with some 1×2 scrap boards and screwed it to our fence with deck screws. I didn’t know how long it would last, since chalkboard paint is not meant for exterior conditions.
The first two summers it held up great. But last summer I started to notice some water damage.
Well it didn’t survive this winter.
If your kids are at the age where you only need one for a year or two than you don’t have to worry about doing too much weather proofing. But if you want it to last a few more years, here is what I would do differently next time.
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.
I highly recommend adding an outdoor chalkboard to your garden this summer. It’s a simple project that can mostly be done for free from items that you or your friendly neighbours have lying around your/their garage.
Outdoor Chalkboard Inspiration…
So what are you waiting for. Go dig up an old piece of plywood in your garage and start painting.