I inspected a new construction home and it had windows installed with the trim overlapping the Hardiplank.with gaps all along the side and bottom. The siding is blind nailed, and loose at the bottom.
I know the siding has Tyvek under it. But is it not losing energy at all of the gaps? Is this considered ok?
I would recommend installing the siding butting it up to the side of the trim and caulking all of the vertical and horizontal gaps.
What is acceptable to code? The Hardiplank PDF says not to caulk anything, but in the same PDF,