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Understanding the Basic Parts of a Typical Residential Roof

A typical residential roof is triangle-shaped, with two sloping planes converging toward the top. This is called the gable roof, one of the most popular roof pitch styles. Such a design helps effectively shed rainwater, snowmelt, and debris away from the home. It also creates ample attic space to ensure ventilation around the structure.

Local roofing companies like Oberg Roofing & Remodeling Inc. agree that it is easier to construct a new roofing system that follows the gable roof design. Unlike its more complex counterparts, a gable roof only has a few basic parts. Learn more about them.

Roof Frames

Also known as rafters, the roof frames serve as the skeleton of the whole roofing system. They are responsible for supporting the roof deck and its associated loads, as well as keeping the roof’s components steady and in place. They rest are on the ridge at the top part and connect to the outside walls below.

Roof Deck

This component is made of flat pieces of wood that, when nailed to the rafters, provides a flat level surface on which to lay the other important parts of the roofing system. Roof replacement pros consider the rafters and the roof deck as the foundation of the whole system.


Another important roofing component, the underlayment is laid on top of the deck to serve as a barrier against moisture infiltration. Conventional felt is used, though roofing manufacturers offer those with additional materials to enhance their performance.

Roof Covering

The gable roof’s outer covering conceals the underlayment. It is necessary to top the roofing system with materials as asphalt shingles, metal, clay, slate and concrete tiles for the sake of curb appeal. More importantly, the covering provides further protection against the elements.


These components are installed to seal the inherent gaps found within the roofing system, such as valleys, vents, chimneys, dormers and other roof protrusions. They protect these areas against potential moisture penetration, which could damage the roofing system.

Learning the basic parts of your gable roof helps you better take care of this important investment. For your roofing needs, turn to Oberg Roofing & Remodeling Inc. We offer steel roofs, as well as residential and commercial roof replacement, repair and maintenance.

Give us a call at (320) 204-2303 or fill out our contact form to request a free estimate. We serve Sauk Rapids, MN residents.