I am using aluminum angle trim to trim out the exterior of my box. I have a 1 piece aluminum roof that does NOT fold down over the sides of the box. I was wondering the best type of sealant to use for this lap type joint of trim to roof. I have thought of 100% silicone, but it's adhesive properties would make it impossible to remove the trim(without destroying it) if I had too for some reason in the future. Also, would it be neccesary to put the sealant under the trim or would just placing it at the edge where the trim and the roof metal meet be ok? Any help appreciated. Thanks.
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