


🌍✨ Is there ever condensation within a roof vent cavity?
Why we’re watching: Based on Martin’s answer here: US building codes do not require vented cathedral ceilings in zones 1-5 to have a vapor retarder (just need an air barrier).
I also… 💚
⚡ Why this matters
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🔭 What to watch next
- 📌 Key signal: Based on Martin’s answer here: US building codes do not require vented cathedral ceilings in zones 1-5 to have a vapor retarder…
- ✅ Watch for measurable follow-through, not just announcements.
- 🔎 Share the most practical takeaway with your community.
🌱 Progress is real — let’s keep building it.
Truth. Solutions. Action. 🤝
Reporting curated for GreenTV. Original reporting via Green Building Advisor.