Composite Trim And Adhesive Questions

JLTrim

I have a customer who has a couple of odd requests and I'm not quite sure how to go about getting them done...
First, he wants to install decorative wood trim to the faces of existing painted metal door slabs. The design he has in mind would basically be a square picture frame around the outside edge of the slabs and a diamond design in the center. This will probably be done using double-ogee mullion trim. My question is what's the best way to attach the stuff to steel doors? I was thinking contact cement, but I'm open to better ideas if you have any. I'd prefer something that will allow me to make adjustments if I have to.
Second, he wants to install fluted casing on top of some existing stucco banding. He wants to use a composite material since it is outdoors and waterfront, I need recommendations on a good supplier/brand to use. The stucco banding is very wavy and uneven, so I prefer a stiff material that won't dimple and twist when I install with tapcons. Also, what would be a good adhesive to use behind this casing? I've seen faux-stone decorations being applied to stucco using a foam adhesive that filled the gaps behind it, but I don't remember the brand name.
I cold use some advice, I don't usually install trim to metal and stucco, but I'm slow so I'll take what I can get.

daystoshort

no matre what you use on the door in time it will fall off becouse of oxidation of the paint.what i would do to keep it on forever is to counter sink some self tapers and fill the holes woth plugs.and the trim to the stuco i would use secaflex once its on it wont come off.

neolitic

Steel door will expand and contract
too much for adhesive alone.
I have used trim screws, you might
use some PL as well. I Don't use
Liquid Nails so I can't say.
Azek comes in 1X and 5/4 and mills
really well, sounds like the ticket
on the stucco.

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painterman

Locktite two side tape on the door.

JLTrim

I hate to use screws because he wants to stain the trim, and the material is very thin so if I use plugs there will be barely anything left for the screw to grip. The job is an addition to a restaurant, the owner wants to match his exisiting doors, and it looks like whoever installed the trim on the other doors didn't use screws/plugs, I'd like to do the same, if possible. The tape is an option, I'll have to see how thin it is, as long as the trim will lie flat on the door, I'll consider it. I hate the idea of only adhering to the door's paint, but I don't think screws will be an option... I'll take a closer look at the existing doors tomorrow.
I'll also look into using Azek for the exterior trim, that stuff isn't flimsy and would work well, I'll bet. Thanks.