Key:floor:material
 floor:material
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| Description |
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Outer material for the building "floor", which can be seen from the outside. 
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| Group: properties |
| Used on these elements |
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| Documented values: 1 |
| Useful combination |
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| Status: in use |
| Tools for this tag |
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This page describes tags for the "floor" of 3D buildings, which can be seen from the outside. It has meaning in cases, when building or building:part has tag min_height or building:min_level. Note that the word "floor" is more commonly associated with the surface you walk on, but in this case we are referring to the floor of a three-dimensional object, which means the lower surface of building or part of building, which can be seen from the outside when looking upwards (more commonly known as the ceiling)
Different use
This key might be in use in a different sense.
Germany
As of 2025 there are around 90 uses of this key in Germany. Almost all of them are used to indicate the surface material of the base or ground, mostly in combination with amenity=shelter, some few in combination with outdoor areas in parks or gardens.
Values
| Key | Value | Short description | Example image |
|---|---|---|---|
| floor:material | plaster | plastered "floor"
In this photo we see the ground beneath our feet has surface=paving_stones, but the 3D building above our heads when we look upwards is exposing an outside edge (the "floor" of the object) in plaster. |
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| floor:material | brick | "floor" made of bricks | |
| floor:material | wood | "floor" made out of wood | |
| floor:material | concrete | "floor" of concrete | 
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| floor:material | glass | "floor" covered in glass | |
| floor:material | stone | stone on stone, mostly castles etc. | |
| floor:material | asphalt | "floor", made with asphalt | |
| floor:material | metal | metal front, flat or in waves | |
| floor:material | marble | "floor", made with marble | |
| floor:material | mdf | "floor" with hard plates, not metal, mdf | |
| floor:material | timber_framing | Timber framing | |
| floor:material | ??? | "floor" with other, metal plates | |
| floor:material | ??? | "floor" with plastic or stone plates | |
| floor:material | ??? |
See also
- Simple 3D Buildings - overview of tags for mapping 3D buildings
- Proposal:3D tagging for building base shapes - Proposal for detailed tagging of building bases (essentially roofs but at the bottom of the building). For the proposal, the original tagging gets replaced by
base:material=*and current tagging means the interior floor only instead.