"The problem is that a 4x8 plywood sign will weather very fast in New England weather. " I live in Rochester, NY. Our weather is no better or worse if you are

"The problem is that a 4x8 plywood sign will weather very fast in New England weather. " I live in Rochester, NY. Our weather is no better or worse if you are a sheet of plywood outside 24/7. It will last years.