Plywood seams: tape or liquid flashing?
Building up our roof, adding polyiso on top of the roof deck, then another layer of plywood. I plan to tape the seams of the lower plywood deck to air seal. Any comments on using liquid flashing instead of tape to seal the seams of the plywood?
Are there any additional benefits from also taping/liquid flashing the polyiso, and/or the top layer of plywood deck above it? I will have a standing seam metal roof with Delta Trella underlay. 2×8 Rockwool in the rafter bays below.
CZ 03 coastal.
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