Thermal bridging is a complicated topic for two reasons: it has multiple aspects, and it often requires complex calculations. Let’s look at a simple case first—exterior wall framing. An exterior wall has multiple layers. For instance, from outside to inside, it may have: Stucco or some type of siding An air gap or rain screen designed to help drain bulk water A bulk water barrier Sheathing, typically ½” plywood or…
PHPP vs. Title 24 – Thermal Bridging
