What is Roof Decking?

What is Roof Decking?

Roof decking is the layer of material that sits on top of the rafters in a roof structure. It provides support for the shingles or other protective layers, like metal sheeting. It also plays a key role in preventing water from entering your home. Without proper roof decking, water could seep through seams or cracks in the shingle layer and enter your home, potentially causing damage to walls and ceilings.

Types of Roof Decking

There are several different types of materials used for roof decking, plank decking and sheet decking.

Plank Decking

Plank decking was the main type of decking used before the invention of plywood. This type of decking is made up of elongated and rectangular wooden boards that come in 2 different sizes, 1×6 or 1×8.

Sheet Decking

Sheet decking is exactly what it sounds like, flat sheets of wood. There are 2 types of sheet decking: plywood and OSB. Plywood is typically used for residential applications due to its durability and cost-effectiveness. OSB is another option and it’s generally used in commercial applications because it’s more affordable than plywood. Both types are made out of wood chips that have been bonded together with adhesives and then pressed into sheets. They also come in different thicknesses, depending on what type of protection they need to provide against water leakage.

Installation Process

The installation process for roof decking usually involves laying down a layer of felt paper over the rafters before attaching the plywood or OSB sheets to them using nails or screws. This helps protect against moisture by creating an extra barrier between the wood components and any potential water leaks from above. Once all the sheets are installed, a waterproof barrier can be applied over them before installing shingles or metal panels on top as desired.

When should roof decking be replaced?

When you get a roof replacement, you might have to replace your decking. If any of your roof decking’s integrity is compromised or there are signs of rotting, the wood will need to be replaced.

Usually, there are going to be a few boards that have to be changed out. But your roofing contractor won’t know how much of your roof decking needs to be replaced until after they finish tearing off your old roof.

If they find rotten boards, your roofing contractor has to replace the decking before they can begin installing your roofing components. However, if your contractor finds your decking’s integrity to be sound, then it can handle your new asphalt roof.

Learn the rest of the roofing materials that make up your roof

Now you know what roof decking is, the types, when it should be replaced, and more. Decking is a crucial part of your roof and must be in good condition to ensure your home is protected.

But roof decking is just one important material that’s part of your roof replacement. That’s why you and every homeowner needs to know the rest of the roofing materials that make up your roof.

Because we want you to understand every important detail you should know about your roof investment, we wrote another article breaking down the 9 roofing materials that make up a roof.

The team at Heart of Florida Roofing has helped homeowners in the Orlando area with all of their roofing needs. We take pride in doing things the right way and will be there for you if there’s ever a problem. Whether to repair a leak or give you a beautiful new roof, you’ll never have to worry about your roof again when you work with us.

Installing good quality roof decking is an important step in building a safe and secure structure that will protect your home from weather-related damage while providing years of reliable service life ahead! Whether you choose plywood or OSB depends largely on budget considerations but either way, make sure that it’s installed properly with adequate waterproof barriers in place before adding any other elements to your new rooftop creation! Contact us for all your roofing needs.


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