Exterior Insulation Done Well: Best Systems for Deep Energy Retrofits

In this episode of 7 Minutes of BS, we continue the discussion with engineer Jonathan Smegal of RDH Building Science Laboratories to break down the best exterior insulation retrofit systems based on real-world testing on five identical student housing units. Jonathan walks through what separates a good system from a great one — fewer layers, less thermal bridging, lightweight claddings, and a…