When it’s time to repair or replace your roof, you might hear contractors talk about things like “decking,” “sheathing,” or “substrate”—but what do those terms actually mean? In this video, Rescue My Roof breaks down what roof decking is, why it’s a critical part of your roofing system, and how it impacts the overall strength and longevity of your home.

We’ll also define other essential roofing terms so you can feel confident and informed when speaking with your contractor. Whether you’re planning a roof replacement or just brushing up on roofing basics, this guide is for you.