• Roof plane: This is the surface of the roof. ...
• Ridge: This is the top or peak of the roof, where two roof planes meet.
• Valley: This is where two pitched roof faces connect and project inward. ...
• Dormer: This is a roof feature that projects out from the roof face.

What are the 6 roof parts?

No matter what roofing material you choose – wood, asphalt, or tile roofing, these elements are important. They may have slightly different names but all are necessary.
...
Six Components That Make Your Roof Work

• Starter Shingles. ...
• Flashing. ...
• Underlayment. ...
• Roofing Material. ...
• Ventilation. ...
• Hip and Ridge Shingles or Caps.

What are 5 parts of the roof frame?

• Decking (or sheathing) Usually made from 1⁄2-inch plywood, the decking closes and reinforces the roof structure and provides a nailbed for the shingles. ...
• Roof edge (or eaves edge) All the boards running along the edge of the roof or eaves. ...
• Attic. ...
• Saddle. ...
• Ridge. ...
• Valley. ...
• Underlay membrane. ...
• Eaves membrane.

What are the things that hold up a roof called?

Roof Sheathing – Sheets, usually made of plywood, which are nailed to the top edges of trusses or rafters to tie the roof together and support the roofing materials.

What is the difference between a joist and a truss?

The joist supports the load which the floor is built to bear. A truss is used to support the roof.

6 Parts of a Roof Explained: Fascia, Soffit, Flashing, Drip Edge, Valley and Exhaust Venting

What are the parts of a roof truss?

• Apex.
• Apex plate.
• Top chord.
• Heel plate.
• 1/3 point plate.
• Bottom chord.
• Slice plate.
• Heel.

What is the basic structure of a roof?

The major parts of a residential roof

It consists of rafters and trusses, which are beams that form the shape of the roof and support the sheathing or the next layer. Drainage features are also established during the roof structure phase.

What are the parts of a flat roof called?

• Plasterboard Ceiling. The plasterboard ceiling is the visible interior part, which covers the entire roof. ...
• Decking. The decking is the skeletal part of the roof. ...
• Insulation and Vapor Barrier. ...
• Waterproof Layer and Covering.

What is a roof soffit?

The soffit is part of the overhang where your roof meets your siding. When rain or snow hits your roof, it runs down, and the overhang allows the water to flow away from your house. The soffit is underneath the overhang, between the roof's edge and side of your home—the bottom of the triangle, if you will.

What is the top part of a roof called?

Roof Ridge: The roof ridge, or ridge of a roof is the horizontal line running the length of the roof where the two roof planes meet. This intersection creates the highest point on a roof, sometimes referred to as the peak.

What part of roof is eaves?

Eaves—The lower edge of a roof (often overhanging beyond the edge of the house).

What is a Perling?

A purlin (or historically purline, purloyne, purling, perling) is a longitudinal, horizontal, structural member in a roof. In traditional timber framing there are three basic types of purlin: purlin plate, principal purlin, and common purlin.

What is a roof facet?

A facet is one section (plane or surface) of a multi-sectioned roof that is over 4 square feet.

What are soffits and fascia boards?

Soffits are the flat boards that cover an overhanging roof from the underside. They're attached to the lower end of fascia boards and cover the area between the external wall and the fascia to protect the exposed part of the roof.

What's the difference between eaves and soffits?

In the widest sense of the term, soffits can refer to the underside of almost anything that's constructed, including arches and porches. Another way to explain it is to say soffit is the exposed siding underneath your roof's overhang. ... To summarise, an eave is part of a roof system and a soffit is part of the eave.

What is the apex of a roof?

An apex roof has two slopes, which both meet in the middle - the highest point of the roof. ... The front of the timber building is most commonly the side with the highest point of the pent roof and it then descends to the back.

What is shell roof?

Shell roof is basically the modification of a pitched roof and covers large areas of the building. Moreover, shell roof is three-dimensional structures consisting of thin membrane slabs, curved in one or more directions which transfer the loads on points of support, i.e. columns, beams, walls etc.

Is roof part of structure?

A roof is the top covering of a building, including all materials and constructions necessary to support it on the walls of the building or on uprights, providing protection against rain, snow, sunlight, extremes of temperature, and wind. A roof is part of the building envelope.

What are structural members of a roof?

The roof system consists of several very important parts: wall beams (or plates, sometimes described as a type of purlins) that run horizontally under the roof truss and connect it to walls; purlins, horizontal members connecting rafters; rafters, sloped parts of the truss running from the wall beams on both sides to a ...

What are the main parts of a rafter?

• Plumb cut, typically called the ridge cut, at the top end of the rafter.
• Birdsmouth, which consists of two cuts – a horizontal seat cut and a vertical shoulder cut.
• Tail cut, which may be cut plumb or square, depending on how the eaves are detailed.

What is a ceiling joist?

Ceiling Joists are the horizontal members that provide a structure to fix the ceiling, and support and fix the diagonal rafters that define the roof shape and are attached at the top to a ridge beam. In many modern constructions the ceiling joists are substituted by the bottom cord of a factory manufactured truss.

What is a fascia board?

The fascia board is the long wooden board behind the gutters on a house. It connects to the roof rafters, closes off the attic and serves as the mount for gutters. ... A damaged fascia can be the starting point for other roof problems and potentially lead to damage to an attic and home.

What is the rake of a roof?

Well, the rake of a roof is the exposed portion on the sides of a gable roof that extends from the eave to the ridge of the sloped sides. The rake of a roof covers the top edge of the roof. This is also an area of the roof where leaks can often occur.

What is flashing on roof?

Roof flashing is a thin metal material that roofers install to direct water away from certain areas (walls, chimneys, roof valleys) of your roof. It's a crucial roofing material that every roof needs to have. You'll have different metal options to choose from for your roof flashing.