I have some old plywood that will be OUTSIDE, and exposed to weather and elements.
I don't know if it is treated .....but I know it's more than 30 years old.
Which coating would better protect this wood and make it last longer with minimum maintenance.........
oil-based clear polyurethane, or oil-based exterior paint
Appearance is NOT a priority.
Any comments welcome!
Thank you...... Lee Carkenord