Moisture is one of the most persistent threats to any wall assembly, and often the damage goes unseen until it’s too late. This course explores how rainscreen systems protect buildings by managing water, promoting ventilation, and extending the life of the exterior envelope. Participants will learn how to design and specify assemblies that drain and dry effectively, reducing the risk of mold, rot, and costly structural repairs. Through real-world examples, we’ll look at how changing codes, climate conditions, and construction practices make moisture management more important than ever. By the end, you’ll understand not only how rainscreens work, but why they’ve become an essential part of modern wall design.