To go with the metal ceiling panels, we chose to use 2 inch angle iron to bridge the gap between the wall and ceiling. This was a quick and relatively inexpensive way to finish this piece of the project off. We decided to leave the metal natural and not paint it or otherwise treat it. Except in the bathroom, where moisture in the air would prematurely rust it. I applied several clear enamel coats out of a spray can. We don’t necessarily care or worry about the metal getting a patina or even some light rust as it ages, that’s the beauty of modern industrial architecture.
Another advantage over a wood molding is that metal comes in 20 ft or longer lengths. Wood comes in 16 ft maximum lengths. With the longer metal, there is no splicing of molding in the middle of the room. The metal also gave us a space to pack in rubber and foam insulation to close the air gap in the seam between the wall and ceiling.
Not to disappoint our wood fans, all the rest of the molding will be rough cedar, I'm just going to nail it up and call it good.
Here are some pictures of the process:
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