Where the roof meets a structure rising above the roof.

A concrete or terracotta product used to finish the roof; incudes apex, ridge and barge tiles.

Anti-ponding board
A sarking support of various materials, (galvanised iron, fibrous cement etc.), installed along the eaves lines from the top of the fascia back to the rafter with a clearance of 10mm below the first batten. This prevents water ponding behind the fascia. Anti-ponding boards should be installed on all low pitched roofs or roofs with no overhang.

The intersection of all ascending hips where they meet either a ridge or another ascending hip. Also the name for a three or four-way accessory used to cover this point on the roof.

Apron flashing
A one piece flashing such as is used at the lower side of a chimney that penetrates a sloping roof.

Barge board / Verge board / Gable board
A sloping board installed to the pitched edges of a gable, covering the ends of the roof timbers.

Barge course / Verge Course
The tiles next to the gable.

A specifically sized timber or steel section installed parallel to the eaves line on which the tiles are fixed.

A composition of brick layers’ sand and cement for fixing the ridge capping on hips and ridges. The edges are then finished with a pointing material.

The system of aligning tiles on the roof in relationship to each other. With a straight bond the sides of the tiles form straight lines from the bottom to top course. With a staggered or cross bond, tiles in each alternate course overlap, by half, the tiles above and below them.

Box gutter
An internal roof gutter between the slopes of a roof or a roof and a wall that discharges water internally through a sump.

Ceiling joists
The joists that carry the ceiling and also form a tie between the feet of the common rafters.

A small piece of wood that reinforces another.

Clipping Batten
A batten installed to the rafters directly behind the fascia. The clipping batten is used for installing the bottom course of tiles when sarking is not specified. Generally it is used only on homes with metal fascia and only in high wind areas.

Collar Tie
The timber used to connect two rafters at or near their centres.

Common Rafter
The main support rafter of the slope between eaves, wall plate and ridge.

Counter Battens
A batten normally installed on top of and parallel to the rafters over4 the ceiling lining, where the ceiling lining is fixed on top of the rafters (exposed beams).

Dutch Gable
A roof that has a gable near the ridge with the lower part hipped.

The lowest overhanging part of a sloping roof that projects beyond the external wall.

Eaves Fascia
A board on its edge installed along the feet of the rafters. It often carries the eaves gutter along the eaves.

Eaves Overhang
The inclined distance (line of rafter) from the outside of the external all to the inner face of the fascia.

Eaves Width
The horizontal distance from the inner face of the fascia board to the outside of the external wall.

The slope or pitch of a roof or gutter.

Flexible Pointing
A highly pliable and durable compound which, once cured, forms a strong bond between the tile and ridge capping.

Head of End Lap
The distance by which one course of tiles overlaps the course below.

Hip End Tile
A sloping triangular roof fitting designed to cover the end of a hipped roof.

Hip Rafter
A rafter following the line of the intersection of two roof planes.

Hipped roof (End)
A gable roof which has two additional sloping planes at either end of the roof.

The installing requirements and materials for sarking, battens, tiles and accessories etc., specified by the tiling manufacturer as sufficient to withstand loading requirements.

Mansard Roof
 A roof structure with two pitches. The steep pitch commences at the eaves, and intersects with the lower pitch, which finishes at the ridge. Tiles on the lower pitch overhang the steeper pitch by a slight margin.

Mitred Hips / Valleys
Cut tiles on hips or valleys that form a true and straight line where the cut tiles join on each slope.

 Short pieces of timber nailed between studs in a wall to brace the structure.

Parapet wall
Usually a brick or timber structure that rises above the roof line.

The angle or slope of the roof surface to the horizontal expressed either in degrees or as a ratio, e.g. 15° or 1:3.75.

Principal Rafter
An upper member in a truss that has the same inclination as the common rafters.

The shape and design of the tile.

A sloping member that extends from the eaves to the ridge of a roof to support roofing material.

The roof’s angle of inclination from the horizontal.

The horizontal line where two planes of a roof meet together.

Ridge board
The horizontal board, set on edge, at which the rafters meet.

Ridge capping
A roof fitting used to cover the ridge-line that can be either ‘V’ shaped or rounded. This generally consists of a specifically made tile used for both the ridge and hips of a roof.

Rigid pointing
A mixture of clean sand, cement and oxide colouring or pre-mixed flexible material, used for the completion of joints between ridge or hips and with roof tiles or tiles at gable ends.

A reflective, pliable membrane that is installed under the tile battens and conforms to AS/NZS 4200.1. (

Sawtooth roof
A roof structure that is vertical on one side with a slope down from the ridge line on the other.

Scribe board
A type of bargeboard shaped to match the overhanging profile formed by the under surface of roof tiles that overhang a gable end. The tiles are pointed up on the interlocking joints.

Secret gutter
A gutter usually fixed against a wall adjoining the roof slopes, concealed by the roof covering and vertical wall flashing, then spilling into an eaves gutter.

Side lap
The distance by which one tile interlocks with the tile beside it.

The term for a pitched roof with one plane.

The lining installed under the eaves between the fascia board and external wall.

Soffit bearer
Timber or metal used to support the soffit.

Staggered bond
The method of laying tiles where the vertical joint of every tile is laid to overlap with a half bond of the tiles in the course below.

Steel battens
Steel battens must be designed in accordance with, AS 2050.2, 2.2 and manufactured from metallic coated steel with a minimum coating class of Z275 or AS 150 in accordance with AS 1397. In corrosive areas, advice should be sought from the manufacturer.

Straight bond
Where tiles are not staggered but are laid directly on top of the tile in the course below, so that the vertical joints form one straight line up the slope of the roof.

A vertical wall support.

Tile clip
A specially formed metal fastening used to secure tiles to supporting members.

Top plate
The horizontal member above a wall on which the truss or rafter sits.

Truss roofs
A roof supported by self-supporting, triangulated structural framework which is, usually prefabricated and delivered to the job site. This type of construction is commonly used for all types of roofs.

Under purlin
A horizontal member in a roof at right angles to the principal rafters or trusses. It carries the common rafters.

The internal angle formed by the meeting of two sloping surfaces of a roof; the opposite of a hip. A valley tray is installed in this area to direct water to the gutter.

Valley creeper rafter
A rafter connecting ridge and valley.

Valley Iron / Valley Tray
A "V" shaped sheet lipped on each outside edge and formed to fit into the angle of a valley.

Valley rafter
A rafter following the line of the internal intersection of two roof surfaces.