Hope I sound like an electrical contractor I?m into my third week. This is my first post question. Mostly done commercial/industrial work since 94. I want to cut in boxes for lights along side deck stairs do all the wiring under deck with UF. The deck walls are same as deck floors wood. Is there a type of water resistant cut in box? I want to get flush mount lights also is silicone able to be put in wire nuts in outside Jboxes. Thanks