Everyone knows that a well-constructed roof plays a vital role in the safety, stability, comfort, and curb appeal of a property, but have you ever stopped to wonder about what actually goes into building a roof? Understanding key concepts and components can help you make informed decisions about maintenance, repairs, and new roof installation projects.
Our team at Trident General Contracting is always happy to share our expertise, and in this blog, we’ll explain some key terms you might hear during the roof construction process.
Rooftop Structure
The roof structure is the foundation of the rest of your roof system. The main elements include:
- Rafters – These are the sloped beams that support the roof and form its shape.
- Trusses – Trusses are prefabricated triangular structures that provide additional strength and stability for the roof.
- Decking – Commonly made from plywood or oriented strand board (OSB), this is the surface that the rest of the roof construction materials are installed on top of.
Underlayment
The underlayment is a protective layer that goes over the decking but underneath the exterior roofing materials. Common types of underlayment include:
- Felt – Traditional and cost-effective, this is typically made of asphalt-saturated paper.
- Synthetic – Synthetic underlayment is more durable and tear-resistant, offering better protection against water.
Roof Covering
This is the part of your roof that you’re probably most familiar with, as it’s the visible section. Popular options include metal, asphalt shingles, wooden shakes, and tile.
Flashing
Flashing is a critical roof construction material that directs water away from areas like the chimney, vents, and valleys. It’s usually made from metal and helps prevent leaks by sealing joints and transitions.
Ventilation
Proper ventilation is key in roof construction. It allows hot, moist air to escape and helps with temperature regulation. Key vent areas include:
- Rudge Vents – Installed at the peak of the roof, these allow warm air to escape.
- Soffit Vents – Located under the eaves, soffit vents allow fresh air into the attic space.
If you’re curious about the roof construction process, don’t hesitate to contact our team!