When you look at your roof, shingles are usually the only part you can see. Beneath them, however, is a structural layer that plays an important role in supporting your entire roofing system: roof decking. Understanding what roof decking does—and knowing the signs of damage—can help homeowners catch problems before they become more expensive. What Is Roof Decking? Roof decking, also called roof sheathing, is the layer of material installed over your home's roof framing. Shing