Anonymous wrote:
Anonymous wrote:Go with whatever is more waterproof.
Yes, you're looking for ease of maintenance, not a fleeting trend.
OP here.
About waterproofing — definitely agree that's priority #1. That said, my plans already call for:
* ZIP-R sheathing (integrated WRB + insulation)
* ZIP flashing system (tape and liquid flash)
* Rainscreen assembly (drainage mat)
So from what I understand, the actual waterproofing is handled at the sheathing layer, not the siding or exterior trim. The siding is essentially decorative and part of the outer cladding. The rainscreen adds a pressure-equalized drainage plane behind it.
Wouldn’t trim vs. no trim mostly impact appearance and install complexity—not true waterproofing—especially if the flashing is done right?
More than happy to hear pushback if I’m missing something.
I’m starting to think the builder prefers trim because it hides imperfect siding cuts and makes installation easier, whereas a trimless approach is more technical but aligns with the clean, modern and luxury look.