Common Roofing Terms, Explained

When embarking on a roofing project, the array of terminology used by professionals can sometimes be daunting. Understanding these terms is not just about making informed decisions for your home’s exterior but also about communicating effectively with your contractors. Timberland Exteriors is here to demystify some of these terms and make your roofing journey as smooth as possible. Let’s dive into the essential roofing terminology every homeowner should know.

Understanding Your Roof’s Anatomy

Before we get into the nuts and bolts, let’s talk about your roof’s basic structure. The anatomy of your roof is more complex than it appears, consisting of several components that work together to protect your home:


  • Shingles. These are the outermost layer of your roof, designed to repel water and protect against the elements. In places with variable climates, choosing the right type of shingle can be crucial for your home’s longevity and performance.
  • Underlayment. Beneath the shingles, you’ll find the underlayment, a water-resistant or waterproof barrier material installed directly to your roof deck. It’s an essential layer of protection against moisture.
  • Flashing. These are pieces of metal placed on the roof’s joints and valleys, around chimneys, and any roof penetrations, to prevent water from seeping into the home. Proper flashing installation is key to a long-lasting roof.

Key Terms for Roof Installation and Maintenance

When discussing a new roof installation or maintenance with your contractor, several terms might come up:


  • Decking. This is the wooden base, usually made of plywood or OSB (Oriented Strand Board), which serves as the foundation for your roofing materials. Keeping an eye on the condition of your decking is essential for the overall health of your roof.
  • Rafters and Trusses. These are the types of structural framing used in residential roofs, providing support to the rest of the components. Rafters are long planks that slope down from the central ridge beam at the top of the roof to an intersection at the outer walls. Trusses, meanwhile, come with triangular webbing and stand along with chords or sloping beams that expand to the peak of the truss.

We’re Just a Call Away!

Being familiar with common roofing terms can greatly enhance your ability to make informed decisions about your home’s exterior. Whether you’re embarking on a new installation, maintenance, or repairs, understanding these terms allows for clear dialogues between homeowners and professionals.


For all your residential roofing needs, turn to Timberland Exteriors. Give us a call at 651-439-1760 if you’re from Maplewood, MN, or 218-849-6675 if you live around Detroit Lakes, MN. You can also reach us online and we’ll get back to you!

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