What Ventilated Facades Actually Do for Energy Performance
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Blog Summary
A ventilated cavity is often described as a detail. In practice it is the single biggest lever a facade has over thermal performance, moisture behaviour and long-term durability.
The cavity is the system
Air moving behind the panel carries away solar gain before it reaches the insulation line, and carries away incidental moisture before it can sit against the substrate.
What it changes in practice
Surface temperatures drop, the insulation works closer to its rated value, and the wall dries in both directions.