Warning · LOD / LOIN
How to fix No material layers
in IFC files
Define layered construction on walls and slabs so they export an IfcMaterialLayerSetUsage at LOD 300+.
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What it means
The No material layers check
Wall/slab missing IfcMaterialLayerSetUsage at LOD ≥ 300
The fix
How to fix No material layers in your authoring tool
Concrete, tool-specific steps. The check itself is schema-agnostic and works for IFC2x3, IFC4, IFC4x1 and IFC4x3.
| Authoring tool | How to fix |
|---|---|
| Revit | Define the wall/floor Type’s Structure layers (Edit Type ▸ Structure) with materials; Revit exports compound structures as IfcMaterialLayerSet. |
| ArchiCAD | Use Composite structures (not a single Building Material) for walls/slabs so layers export as an IfcMaterialLayerSet. |
| Tekla | Tekla parts are typically single-material; for layered elements define the layers/materials so the layer set exports, or confirm this rule applies to your discipline. |
| Allplan | Use multi-layer components so the material layer set is exported. |
How it works
Find and fix it in the browser
The whole flow runs client-side — your IFC file never leaves your machine.
01
Open your IFC file
Open IFC Viewer Online and drag & drop your IFC file. It is parsed locally in your browser via WebAssembly — nothing is uploaded.
02
Run the Health Score validation
Run validation. The "No material layers" check (RULE_LOD_MATERIAL_LAYER_MISSING) flags every affected element and pinpoints it in the model tree.
03
Fix in Revit
Define the wall/floor Type’s Structure layers (Edit Type ▸ Structure) with materials; Revit exports compound structures as IfcMaterialLayerSet.
04
Fix in ArchiCAD
Use Composite structures (not a single Building Material) for walls/slabs so layers export as an IfcMaterialLayerSet.
05
Fix in Tekla
Tekla parts are typically single-material; for layered elements define the layers/materials so the layer set exports, or confirm this rule applies…
06
Fix in Allplan
Use multi-layer components so the material layer set is exported.
07
Re-validate
Re-export from your authoring tool and re-run validation to confirm the issue is resolved and your Health Score improved.
Related checks
Other LOD / LOIN checks →
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