Depends on what is "rotten"...is it the floor the stairs the railing? If you see pitted breaking wood that has soft spots from water, then I would suggest you call a deck professional who will give you a professional opinion....
The room is on a concrete slab with radiant heating but I live a block from the beach and I think the change in the weather ( snow cold in winter, hot and mid summer...
See more
Depends on what is "rotten"...is it the floor the stairs the railing? If you see pitted breaking wood that has soft spots from water, then I would suggest you call a deck professional who will give you a professional opinion....