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This page is a translated version of the page Arch MultiMaterial and the translation is 32% complete.
Outdated translations are marked like this.

Arch MultiMaterial.svg Arch MultiMaterial

Menu location
Arch → Material tools → Multi-Material
Arch, BIM
Default shortcut
Introduced in version
See also
Arch SetMaterial, Arch CompSetMaterial


The Multi-Material tool defines a list of materials with, for each material, a name and a thickness value. This multi-materials list can then be added to an Arch object instead of a single Arch Material .

Arch multimaterial example.png

Not all Arch objects can currently make use of multi-materials, and the use they do of it differs. Currently:

  • Arch Wall.svg Walls with a MultiMaterial will use the material definitions and thicknesses to create a multi-layer wall
  • Arch Window.svg Windows with a MultiMaterial will attribute materials with a given name defined inside the MultiMaterial to window components with a same name or type (see below). Material thickness is not considered.
  • Arch Panel.svg Panels with a MultiMaterial will use the material definitions and thicknesses to create a multi-layer panel


  1. Create first a series of Arch SetMaterial.svg Arch Materials that you will need in your Multi-Material.
  2. Optionally, select an Arch object you wish to attribute the new Multi-Material to.
  3. Press the Arch MultiMaterial.svg Multi-Material button.
  4. Set the desired material layers.


Arch multimaterial panel.png

Upon creating or editing a multi-material by double-clicking it in the tree, the following options are available:

  • Duplicate another existing Multi-Material from the same document. This only copies the values over, and doesn't link the two multi-materials in any way.
  • The Name field will also set the material object's Label
  • The Composition list is the list of the different material layers that compose this multi-material. Each layer has a name, a material and a thickness value.
  • Click Add to add a new layer, Up to move a selected layer up, Down to move a selected layer down, or Del to delete a selected layer.
  • Double-click the name of a layer to edit it, the material will offer you a drop-down list of available Arch Materials in the same document, and thickness can be set to any value in any unit
  • Name and Material fields are mandatory. Thickness can be left blank (it will then adopt a value of 0).
  • When a multi-material contains layers with a thickness of zero, that thickness is considered variable. Arch objects that use the multi-material, such as Walls and Panels, will treat that accordingly, and give that layer the remaining space available given their own width or thickness.
  • If you name the different components of a multi-material "Frame", "Solid panel", "Glass panel" or "Louvre", and apply that material to a window, the given materials will be applied to the corresponding window components.

Relation to IFC

This roughly corresponds to a combination of IfcMaterialLayerSet and IfcMaterialLayer.