RE: Exterior trim
We have not yet installed it, but pretty sure I am going with the thin PVC lattice strips you can get from home depot, lowes, etc. This is a paintable material and very low profile. All I need to do is cover the screw holes around the edges. Only issue I am trying to resolve is how to install it! Obvious 4200 or something like that will be necessary but how to affix it! On the inside I can cut some 2x4 braces to push each side into the caulk til it sets but not sure how to get the exterior portions to stay embedded in the caulk long enough to stay in place. Gotta still figure that part out.