Lots of rain drips into my fireplace with the big rains we are having. After drying the fireplace box, and the brick is still wet, can I add wood & burn it? The hearth and face of bricks are still wet.

Hi Sign and welcome, I would start with a small fire and allow the bricks to dry slowly.

Also I would consider a cap, like this: Chimney Caps: FREE Shipping SALE, Largest Chimney Cap Selection on Web!

Good luck and stay warm.

Shouldn't be any worse than burning wet wood. Fire er up.