Choosing a set of cornhole boards

Baltic Birch is one of the smoothest and most durable materials that you can use, but you have to know what you're looking for. Not every supplier is created equal. All Tournament grade boards are made of a 3/4" baltic birch plywood. Thickness isn't usually the problem, it's how many layers (ply) are in the wood. The cheapest option will have about 3-4 layers. These pieces usually have large voids (air pockets) in-between layers and the strength is comprimised. We use an 10 ply baltic birch that maximizes the woods strength and contains no voids. Once it's finished it's as smooth as glass and incredibly strong. 

If you're looking for something that can be left outside regardless of the weather, PVC is your option. This is the most expensive material that can be used, but when properly assembled you have a very strong and weather proof set of cornhole boards. The only thing thats a drawback is that the surface doesn't play like a set of Baltic Birch boards. PVC can slow down a lot because of the summer heat, or speed up a lot in the cold months. But if you own a bar or restaurant and don't want to bring your boards in every night, PVC will be your friend.

MDF is a very smooth material and available at just about every wood supplier. It can be very inexpensive but it comes with some pretty big drawbacks. MDF is extremely heavy due to the density of the fiberboard. MDF soaks up liquids like a sponge. If you leave them out in the rain, spill a drink, or even expose it to super humid weather, the top will warp. MDF requires a lot of prep time if you plan on painting or printing on it. Since it soaks up liquids you will need several coats of paint or several passes with your printer to have a vibrant image.

A very inexpensive option. Plywood costs significantly less than a lot of its counterparts but the playing surface is very rough and full of voids. If you are looking for a smooth surface this may not be the best option for you. 

The ultimate in weather proof play. Once you make cement boards, they're not going anywhere or wearing due to weather. The drawbacks are significant. The surface is extremely course and can destroy a set of bags in just a couple rounds. They're not mobile and can be VERY expensive to make. If you own a park and just want something out for people to use, cement would be your option.