Roof Features

 

Apron Flashing

A flashing that seals the top edge of a roof against a wall or chimney etc.

Barge or Verge Flashing

A flashing that seals the end of a roof against the verge or gable end.

Bargeboard

A board or roll formed metal section fixed at the gable to finish and protect the roof to gable wall joint.

Box gutter

A horizontal gutter at the intersection of two parallel roof surfaces.

Boxed Eaves

An eaves that has been lined with the lining material level, rather than following the slope of the roof.

Ceiling joists

A wooden or steel beam supporting a a ceiling.

Chimney cricket

A section of roof framing to divert rainwater around a chimney or short parapet.

Clerestorey window

A window in the upper part of a wall and sometimes the lower edge of the roof to give light and ventilation to a high room.

Collar Flashing

Any type of flashing that seals an object that passes through a roof. In particular now associated with proprietary fittings to suit various circular holes in roofs. i.e. vent pipes or extractor pipes.

Curb

Curb is a name for the joint between the roof faces in gambrel and mansard roofs.

Dormer window

A vertical window placed in a sloping roof.

Eaves

The lower part of a sloping roof, the part of a roof which overhangs the walls.

Eaves brace

A brace between a wall and the eaves to increase the overhang at the eaves.

Eaves bracket

A bracket between a wall and the eaves to increase the overhang at the eaves.

Eaves lining

A sheeting or lining material to seal the underside of an overhanging eaves or verge.

Eaves Vents

A series openings in the eaves to facilitate the movement of air inside a roof space.

Eyebrow

A low dormer type projection in a roof surface with no side walls. The roof surface flows over it in a curve.

Fascia board

A horizontal board or roll formed metal fitting usually fixed vertically to the ends of the rafters

Fascia gutter

1.) A rainwater gutter that is fixed to a fascia board.
2.) A purpose made rainwater gutter that is fixed to the ends of the rafters and also performs the function of a fascia board.

Finial

1.)In architecture, a pure decoration or embellishment to the high points of a building.
2.) The top, round cap to flagpoles.
3.) Non construction related – Probably the most use it gets today is in the soft furnishing sections of stores, it is a name for the moulded caps to curtain rail ends.

Flashing

A strip of sleeve of impervious material, or a non-ferrous metal or coated steel material that is formed to stop the entry of water.

Gable

The vertical triangular end of a pitched roof. It often is a continuation of the wall it is sat on or it can be made from different materials.

Gable dormer

A vertical window placed in a sloping gable roof.

Gable Vent

A louvred vent in a gable wall.

Gablet

1). A small gable that projects from another roof surface, similar to a dormer but with no walls. It can indeed be sat at the top of a gable end but the term is rarely used in this respect any more. 2). A triangular coping to a wall or buttress.

Gutter outlet

1.) An outlet for a gutter in a wall or parapet to allow water to drain off a roof.

Gutter overflow

An extra gutter outlet or scupper at a higher level than the normal outlet. To safely direct the water outside if the main outlet gets blocked or is overloaded.

Hammer Beam

Short horizontal beams built into and braced off the walls to help create larger open spans than would otherwise be possible with the means available at the time.

Hammer Post

A vertical post from the open end of the hammer beam to the principal rafter.

Hip

The meeting of two inclined roof surfaces.

Hip flashing

The PM flashing of a hip to a roof sheeted with roll formed steel roofing.

Link dormer

A dormer that typically houses a chimney. Also used to join one part of a roof to another

Parapet

1.) The part of an exterior wall, gable or party wall that is entirely above the roof surface
2.) A low wall to guard the edge of a drop off. 3.) A defense wall.

Parapet gutter

A gutter at the intersection of a parapet wall and the bottom of a roof slope.

Pendant

A suspended feature in gothic architecture, used in stone vaults and timber roofs. Also called a pendent.

Penetration flashing

Any type of flashing that seals an object that passes through a roof. In particular now associated with proprietary fittings to suit various circular holes in roofs. i.e. vent pipes or extractor pipes.

PM flashing

“Pressed metal” material usually 0.9mm thick in the same finish as the roofing. It is cut to length and width in a guillotine and then shaped in a brake press. The lengths of the individual flashings are governed by the size of the machine available. 6M. is common.

Rainwater head

A funnel or boxlike head at the top of a down pipe or downspout for the collection of rainwater from a gutter outlet or overflow. Also know as:-rainwater header, rainwater sump, leader head, conductor head.

Ridge

The apex of a roof. The highest point. Usually where two roof surface are parallel then the ridge is a horizontal intersection of the two.

Ridge Vent

A horizontal vent to remove hot air etc. fixed to the ridge of a peaked roof.

Roof Vents

A series openings in a sealed roof to ventilate the roof space.

Roof verge

The edge of a gable roof at the gable wall. Sometimes flush with the wall and often has an overhang.

Rotary Vent

A rotary spinning extractor vent, driven by wind power only, or by electric motor. Usually fixed towards the ridge of a peaked roof.

Scupper

1.) An outlet for a gutter in a wall or parapet to allow water to drain off a roof.
2.) A grill or other device to stop debris clogging a drain or gutter outlet.

Shed dormer

A vertical window placed in a sloping shed roof.

Stepped Flashing

A flashing that seals the sloping edge of a roof against a masonry or brick wall.

Tracery

Curved openwork shapes in stone or wood of typical Gothic designs in windows openings or decorative screens.

Valley

The meeting of two inclined roof surfaces at a re-entrant angle.

Vergeboard

A board or roll formed metal section fixed at the gable to finish and protect the roof to gable wall joint.

Vermin proofing

Protecting a building against the entry of rats and mice and other vermin. Particularly at the eaves. Usually by expanded metal mesh.

Wall post

A vertical post against the wall under a hammer beam or tie beam and down to the corbel to secure the curved brace and help transmit roof loads to the corbel.