What are the structural parts of a roof?

What are the structural components of a roof?

Roof Structure:

  • Rafters. One big aspect of a roof’s frame is the rafters. …
  • Purlins. Another large aspect of a roof comes from purlins—additional support for the roof load. …
  • Pitch. You will also notice the roof’s pitch right from the get-go. …
  • Underlayment. …
  • Decking. …
  • Shingles. …
  • Flashing. …
  • Drip Edge.

What are the parts of the roof called?

These are the parts of a house’s roof:

  • 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 is the main structural support of a roof called?

Rafters are diagonal beams that meet at the top and provide the main support for the roof deck and its load. Basically, it’s the part that gives your roof its steep shape.

INTERESTING:  What are synthetic slate roof tiles made of?

What are three major components of a roof?

It incorporates joists, trusses, and rafters. Together, these three types of beams make up a framework that gives the roof its shape.

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 the parts of a roof truss?

Parts of a roof truss

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

What part of a roof is the eaves?

The eaves of a roof is its lowest horizontal edge. The eaves may terminate flush with the outer face of the wall, in which case it is known as a ‘flush eaves’. It may also project out beyond the external wall, with a soffit below.

What are roof support beams called?

A rafter is one of a series of sloped structural members such as wooden beams that extend from the ridge or hip to the wall plate, downslope perimeter or eave, and that are designed to support the roof shingles, roof deck and its associated loads. A pair of rafters is called a couple.

How is a roof held up?

Gable trusses are used at the ends of the three rooflines. The trusses are fist stacked on top of the walls, either by hand or with a crane. … The trusses are tied to the walls with small metal plates. Once the trusses are up, the roof is covered in plywood or OSB, which gives the roof tremendous rigidity.

INTERESTING:  How much does it cost to replace a roof in California?

What are the parts of a rafter?

A common rafter has three basic parts you need to become familiar with:

  • 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 the wood under a roof called?

Also known as the wood sheathing, this is the base on which everything else is laid on. It’s essentially the foundation of the roof. This is typically made with OSB or oriented strand board or plywood that’s attached with nails onto the rafters.

What are the square things on my roof?

The melting snow re-freezes when it reaches the overhangs of your roof where there is no warm air from your house to continue melting the snow, causing an ice dam to form higher and higher. …

What is a roof facet?

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