We’re pretty much done with the trailer. Well, we still have to plumb the sink…and do a few other things. But today, it looks much more finished. Over the past several days I’ve been sneaking out after work, usually in the dark, to add the last few pieces of aluminum trim. I happened upon a stash of L-shaped aluminum trim – with pre-drilled holes in one leg of the L – at our local discount/overstock store. They had 6′ pieces for only $1.99, and it was the right dimension. So I snapped it up and have been bending, trimming, and installing.
First, the backsplash. We made the backsplash – twice, because once I put a nail from the nailgun right in the middle as I was finishing up – from just a piece of aluminum flashing about 12″ wide off a roll we’ve had kicking around the garage for a while. First, I built up behind the backsplash area using scrap luan – ending up with about 1/2″ standoff. The standoff had channels let in for the electrical wires and the gas line. Then I skimmed over the top with the aluminum flashing, and finally, this weekend, added a bent piece of the L-stock as a ‘frame’ around the edge. It looks a lot like the edge trim around the fiberglass sink, which it was modeled after.
Oh, and because there’s a standoff now, we had to put a little steel spacer behind the edge of the old blue fiberglass part to conceal screw threads. You can just see it at the left edge of the old backsplash in the photo. It was $1.10 at the hardware store for a 3/8 diam. 1/2″ length steel spacer, which worked perfectly and looks good.

Sink backsplash - the new aluminum addition mirrors (pun not intended) the shape and style of the trim around the old blue fiberglass portion.
Last night and this evening, I finished using pieces of the same L-stock with foam weatherstripping mounted behind it to seal and edge around the interior of the door frame. It covers all the little gaps and imperfections (phew!) and looks really sharp. Not to mention super-bright with a camera flash at night!

Bright camera flash! There's new trim just around the edge of the door frame. Much better than our somewhat imperfect cut-out in the plywood siding.