All,

I have the opportunity to turn a walk-in closet with door into a ham
station. I'm thinking of turning the closet into a Faraday cage to
help in reducing common-mode QRM. To this this, I will need to line
the entire inside of the closet, including the door, with some type of
metal, and then connect that metal to my ground system.

Question is this: what type of metal would provide acceptable results:
aluminum foil, copper foil, or tin-plated zinc sheets nailed
overlapping along the closet inside?

Thanks in advance,

The Eternal Squire