I am having what seems to be a unique issue per my own research.
The door frame of my trailer is built in such a way the metal extends from outside to inside. As such the heat it accumulates from outside is transferred inside. On hotter days its essentially a space heater, I can't even touch it for long without feeling like I am getting burned.
There are some things I have tried and others I have thought of but I am curious if anyone else has had a similar problem with perhaps a more elegant or simpler solution.
-I've tried putting a radiant barrier on the outside, covering the entire door and frame plus about 2 extra inches in all directions and the impact seems to have made a small difference overall but it seems air contact, not sunlight, is still an issue.
-I tried simply covering the outside frame with silicone but it seems this doesn't insulate well as the issue persists.
-I also tried applying these polyethylene foam pieces to various spots inside but its difficult to get total coverage. However where I have applied it has been quite effective, just difficult to work with and doesn't "form" to the frame very well.
The other ideas I have is to cover the outside portion of the frame with spray insulation and then cut to a more pleasing shape and then seal/pain it some how. My concern this isn't very weather resistant.
Another was to "break" this conductivity of heat by cutting the frame into an "inner frame" and "outer frame" so there is no direct physical contact to conduct the heat. However this would take some doing, likely compromise the door stability and I'm not entirely sure how much it would help in the end.
I've already sealed the door with weather stripping and caulk to an extreme degree. This is not an air flow or leakage problem. The door is sealed for air. I repeat, the door is sealed for air leakage. I'm sorry if this seems obnoxious but so far all research I have done just talks about weather stripping, caulk and air leakage. Air leaks are not the issue, I am 100% sure.
Here are some images to help illustrate.
As you can see the frame is one metal piece, extending from outside all the way to the inside, bringing in a lot of heat with it.
Here is a picture I took with my infrared camera. Any metal parts that extend from outside to inside are clearly hotter than the rest.
The part I circled here is on the metal door handle where I put a piece of the foam on. It definitely seems to be mitigating it but like I said this stuff doesn't form fit very well.