Template:Roof:shape

Roof shape

You can characterize the roof shape of a building using a catalogue of well-known roof types.

Image
roof:shape	gabled	flat	hipped	pyramidal	skillion	half-hipped

Image
roof:shape	round	gambrel	mansard	dome	onion

Other common values and problems.

Value	Comment
saltbox	Problematic due to conflicting definitions and meanings of "saltbox" in this context.
double_saltbox, quadruple_saltbox	As above.
sawtooth	Factory style roofs.
cone, conical	Both used rarely.
side_hipped	Half of a hipped roof, not the same as half-hipped. One vertical gabled side, one 'hip' with three sloped faced. This is common on semi-detached properties where the whole building has a hipped roof, but each house has a side_hipped roof.
lean_to	Unclear, probably should be skillion.
shed	Mono-pitched roofing, also sawtooth
gabled_row	Unclear, sometimes used on a sawtooth roof, sometimes a row of gabled terraces.
crosspitched	Cross shaped roof with two gables at 90degrees. AKA Cross gabled roof.
many	Marks that building has multiple different roof shapes at once. Such building may have building:part=* carrying own roof:shape values. History described in detail in roof:shape=many

Saltbox - one meaning, conflicting with alternative one, from DE:OSM-4D/Roof table and some editors

Saltbox - one meaning, conflicting with alternative one, from Simple 3D Buildings and some editors

Saltbox house roof shape, according to Saltbox house

Other roof tags

Key	Comment
roof:orientation=along/across	For roofs with a ridge the ridge is assumed to be parallel to the longest side of the building (roof:orientation=along). But it can be tagged explicitly with this tag.
roof:height=*	The height of the building (i.e. the height of the façade) is calculated as the building's total height=* minus roof:height=*.
roof:angle=*	Alternatively to roof:height=*, roof height can be indicated implicitly by providing the inclination of the sides (in degrees).
roof:levels=*	Number of floors within the roof, which are not already counted in building:levels=*.
roof:direction=*	Direction from back side of roof to front, i.e. the direction towards which the main face of the roof is looking.
roof:material=*	The outermost material of the roof. Useful in conjunction with roof:colour=*.
roof:colour=*	The (dominant) colour of the roof. Useful in conjunction with roof:material=*.

Proposed tags

Some roofs (e.g., square buildings) cannot be accurately modeled with the simple techniques described on this page.

Additional roof shapes are suggested in S3DB Proposals, including advanced approaches for manual modelling (e.g., ProposedRoofLines or parts of OSM-4D/Roof table).

This section is a wiki template, editable here.