# Add Layer {% embed url="" %} This tool allows you to easily add new material layers such as insulation layers, wall or floor finishes to existing building elements. Note that building elements with an internal layer structure need to be split first before being able to add new layers. Use the [Split Into Layers](/documentation/qonic-application/modeling/modifying/material-layer-editing/split-into-layers.md) tool for this. 1. Under the *Detail* icon, click *Add Layer* 2. Choose a material. Your [project material libraries](/documentation/qonic-dashboard/libraries/material-libraries.md) will be displayed here, as well as the materials already in the currently open model 3. Enter a thickness 4. (Optional) enable the ‘Flow through openings’ setting. A use case for this setting is when adding a layer to a floor slab and there is a door opening between two rooms. When this setting enabled, the newly added layer in one room will flow through the door opening so that the new layer is also added to the second room. Disable this setting if you want two different floor finishes in the two rooms. 5. Click on a product to add the chosen layer. Works best on planar objects like walls, slabs and roofs. Curved surfaces such as cylindrical or spline surfaces are also supported. 6. (Optional) after adding a layer to one wall in a room, the option will appear to apply this same layer to the rest of the room. If you choose to apply this, the next layer you add will automatically be added to the entire room. The layers that you add will become part of the existing building element, while still allowing you to edit them individually. It is possible to add a layer to multiple coplanar walls or slabs at once. The layers will then automatically be split up into individual parts belonging to their respective walls or slabs. --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://help.qonic.com/documentation/qonic-application/modeling/modifying/material-layer-editing/add-layer.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.