I am in Montana.
The deck was probably built in the 70s, guessing off the base paint color we have striped/sanded off that matched the original house color. It is a covered deck, you know your stuff. I think I will replace the rotted boards with redwood and I don’t think I’m going to route in a tongue… I really should just replace the whole thing but I’m not ready to spend the money at this point. Home remodeling is an adventure…
Thanks for your help.