> For the complete documentation index, see [llms.txt](https://docs.besmart.software/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.besmart.software/3d-modeling-and-design/metal-framing/getting-started/building-modeling/roofs.md).

# Roofs

Before framing roofs, you need to create wall types with layers and model the roofs correctly. Follow the guide below.

## 1. Create roof type layers

* Drywall and other finish layers should have **Finish 1**, **Finish 2** or **Substrate** function
* The main **studs** are hosted inside the **Structure layer** which has to be the **Core Layer** (layer between the two Core Boundaries)
* Each layer must have a defined **Function**, **Material** and **Thickness**

{% hint style="info" %}
**Suggestion**: Structure \[1] layer thickness should match the Web depth (d) of you rafters/joists. For example, if your rafters are 150mm, the Structure \[1] layer should have the same thickness.
{% endhint %}

<figure><img src="https://239424168-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FqtUsszuAWXIZhQhrvjnb%2Fuploads%2FHczjKXN6nchS1Bzrm44E%2Fimage.png?alt=media&amp;token=dc5bd78a-ae63-4323-a7c7-a9461e3978d7" alt=""><figcaption></figcaption></figure>

{% hint style="success" %}
You can create as many layers as you wish.
{% endhint %}

For **double** drywall or other finish layers, each **Material** name must be **unique.**

## 2. Model roofs

After modeling **pitched roofs**, you need to use [**Roof Panel Layout** ](https://docs.besmart.software/common-for-several-products/roof-panel-layout)to divide them into smaller panels:

<figure><img src="https://239424168-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FqtUsszuAWXIZhQhrvjnb%2Fuploads%2FBL0r3ZC7lScCMv0Wma7l%2Fimage.png?alt=media&amp;token=d0dcbd8a-0fda-409e-b585-27515e1ebb3e" alt=""><figcaption></figcaption></figure>

Learn how to use Roof Panel Layout in the video below:

{% embed url="<https://www.youtube.com/watch?v=IJfcFtFLE5s>" %}

***

{% hint style="info" %}
If you can't find the answers you're looking for, please [contact our support team](https://helpdesk.besmart.software/support/tickets/new).
{% endhint %}


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