Fundamentals, In Order
Each course walks one part of the envelope from principle to practice: what the layer does, what fails when it's missing, and how the components in our catalog serve it. Courses are free, self-paced, and honest about their limits — they teach general building-science principles and product application, and they defer project-specific decisions to your design professional of record.
The Course Shelf
Airtightness Fundamentals
Why air leakage drives energy loss and moisture risk, and how a continuous air barrier is actually detailed.
Moisture & Vapor Control
Bulk water, capillarity, air-transported moisture, and diffusion — the four ways water moves, and the layers that manage each.
Ventilation for Tight Buildings
Heat-recovery ventilation from first principles: why tight buildings need a fresh-air plan and how to size the conversation.
Daylighting & Skylights
Bringing light through the roof without bringing water and cold with it — placement, flashing, and sequencing.