Roof Terminology

20 Parts of Roof | Parts Terminology | Roof Diagram | Roof Structure Diagram | Roof Parts Name

The roof is an essential part of the building envelop it is covering the topmost portion of the house or building and the roof is supported on the wall of the house.

There are different Parts of Roof such as Cornice, Counter Flashing, Course, Eaves, Flashing, Gable, Hip, Fascia, Felt, Joist etc.

20 Parts of Roof | Parts Terminology | Roof Diagram | Roof Structure Diagram
Roof

The roof gives protection against the snow, wind, rain, sunlight, and extremes of temperature.

Also, the roofing increases the value of the building to an unimaginable level. The roof is much more than just it decorative upper layer of the house.

The exterior layer of a roof is varies depending upon the supporting structure and availability of materials.

Lastly, the process of building and maintaining the roofs is called Roofing.

Read More: Mansard Roof | Mansard Roof Design | Types of Mansard Roof | How To Build Mansard Roof


Different Types of Roofs

The following several types of roofs are,


Types of Roofing

The following different types of roofing based on the materials:

  • Solar Tiles
  • Asphalt Shingles
  • Metal Roofing
  • Stone Coated Steel
  • Slate
  • Rubber Slate
  • Clay and Concrete Tiles
  • Green Roofs
  • Built up Roofing

Parts of Roof Or Roof Terminology

The following major parts of roof are,

20 Parts of Roof | Parts Terminology | Roof Diagram | Roof Structure Diagram
Roof Diagram
  • Built up Roof
  • Cornice
  • Counter Flashing
  • Course
  • Eaves
  • Flashing
  • Gable
  • Hip
  • Fascia
  • Felt
  • Joist
  • Rafter
  • Ridge
  • Rack
  • Soffit
  • Purlins
  • Pitch
  • Sheathing
  • Shingle Flashing
  • Frieze Board

Built-up Roof

A Built-up rooftop layer is made with a layer of gravel hot-mopped asphalt and it’s having alternating layers of both.


Cornice

The topmost portion of the roof is projecting out from the sidewalls of the house.

Generally, the three types of Cornice are used namely, Box Cornice, Open Cornice and Close Cornice.


Counter flashing

This flashing is embedded at its top in a wall or other vertical structure and it lapped down over shingle flashing.


Courses

Courses mean horizontal rows of tiles or shingles. It is one of the important parts of roof in the house.


Drip

A drip is a metal strip that extends beyond the racks or eaves for preventing the rainwater from rolling around the shingles.


Eaves

20 Parts of Roof | Parts Terminology | Roof Diagram | Roof Structure Diagram
Eave, Soffit, Fascia, Downpipe

Eaves mean the Lower edge of a Roof and generally overhanging beyond the edge of the house.

Read More: Low-Slope Vs Steep-Slope Roof: What are the Variations?


Soffit

Soffit parts of roof is means something fixed underneath the roof.


Fascia   

The trim board behind the eaves and gutter. It is one of the important parts of roof.


Flashing                

Generally, it is an impervious metal strip used for preventing water from the junction between a covering of the roof and other parts of roof.

Flashings are provided to prevent leakage from the wall and roof through joints in copings, parapet walls.


Felt

Generally, it is made of a combination of asphalt and either rags or paper. The tar paper was used by the roofer.


Gable

Gable means triangular upper portion of the wall, which is the closing end of a ridged roof.


Hip

Hip means supporting a wall adjoining the external angle at the junction of two sides of the roof.


Joist

20 Parts of Roof | Parts Terminology | Roof Diagram | Roof Structure Diagram
Joist, Rafter, Purlin, Wall Plate, Battens In Roof

Joist is a horizontal structural member to which sheathing is nailed.


Rafter

Rafter is a slanted structural member to which sheathing is nailed.


Purlins

It is a horizontal member which is laid on the principal rafters from wall to wall.

The main aim is to support the common rafter of the roof. When the span is large

Purlins are made up of steel, wood and the top surface of the purlin is plane and uniform. This is painted before fixing on their position.


Rake

Rake is a slanting surface of a gable roof which is extending beyond the wall end of the building.


Ridge Point

Two sloping roofs are meet at the top edge of the roof is called Ridge Point.

Read More: A Guide To Green Roof Construction and Functions


Sheathing

20 Parts of Roof | Parts Terminology | Roof Diagram | Roof Structure Diagram
Roof Parts

The sheathing is parts of roof that have a strong layer of component of wood boards which is fixed to your joist of roof and truss.

Also, your roofers attach your shingles to this square of wood.

Roof sheathing is also known as Roof Decking.

Advantage of Providing Sheathing in a Roof,

  • Roof Sheathing is adding the strength of your roof.
  • It gives the support of Roof.
  • It prevents the fire.

Fascia Board

This is a wooden board fixed to the feet of the common rafter at eaves. The ends of the lowermost roof covering material rest upon it.


Pitch

Pitch means slop of the roof and it is defined as the ratio between the rise and span of the roof. Also, it gives an angle of inclination.


FAQs:

What are the Different types of roofs?

Flat Roof
Pitched Roof
Low Sloped Roof
Mansard Roof
Skillion Roof
Gable Roof
Hip Roof
Saltbox Roof
Butterfly shaped Roof
Arched Shaped Roof

Which are the Types of roofing?

The following different types of roofing based on the materials:
Solar Tiles
Asphalt Shingles
Metal Roofing
Stone Coated Steel
Slate
Rubber Slate
Clay and Concrete Tiles
Green Roofs
Built-up Roofing

What do you mean by Roof?

The roof is an essential part of the building envelop it is covering the topmost portion of the house or building and the roof is supported on the wall of the house.

What Are Different Parts of Roof?

The following are some important parts of roof,
1. Built up Roof
2. Cornice
3. ounter Flashing
4. Course
5. Eaves
6. Flashing
7. Gable
8. Hip
9. Fascia
10. Felt
11. Joist
12. Rafter
13. Ridge
14. Rack

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2 thoughts on “20 Parts of Roof | Parts Terminology | Roof Diagram | Roof Structure Diagram | Roof Parts Name”

  1. Charlie Bradford

    Informative article! As homeowners, it is important to know parts of the roof to care for and maintain properly. It would also help the homeowner understand what the roofing contractors are saying about the roof. Lastly, it would help homeowners understand the procedures done.

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