# How to Flip a Curtain Wall Element

Changing the orientation or appearance of a curtain wall in Revit can be achieved in a couple of ways, depending on whether you want to flip the entire wall element or rotate the grid pattern within it.

How to Flip a Curtain Wall Element

The most common interpretation of "flipping" a wall in Revit refers to reversing its external and internal faces or its justification line. You can do this using the following methods:

• Using Flip Controls:

  • Select the curtain wall element in a plan view or 3D view.
  • Small blue "flip" controls (double arrows) often appear near the wall.
  • Clicking these controls will mirror the wall across its justification line or flip its orientation.

• Using the Mirror Tool:

  • Select the curtain wall.
  • Go to the Modify tab > Modify panel > Mirror (Draw Axis) or Mirror (Pick Axis).
  • Draw or pick an axis about which to mirror the wall. This creates a mirrored copy; you may need to delete the original if you only want to flip the existing one in place relative to another object.

How to Rotate Curtain Wall Grids

Another way to adjust the look of a curtain wall involves rotating its internal grid pattern, which changes the angle of the mullions and panels. This is the method demonstrated in the provided YouTube reference.

According to the video from TheRevitKid (Source: YouTube - TheRevitKid - Rotate Curtain Wall Grids...), you can rotate the grids as follows:

1. Select the Curtain Wall Grids: While working with the curtain wall, you need to select the grid lines themselves. You might need to use the Tab key to cycle through elements and select individual grids or the entire grid system.
2. Access Rotation Options: Once the grids are selected, properties and options will typically appear, often "pop-up on the left-hand side" of the interface.
3. Apply Rotation Angle: Within these options, you can enter a numerical value for the rotation angle. As shown in the reference, you can apply angles like 45 or negative 45 (e.g., -45) degrees to the grids. You may be able to apply different angles to horizontal and vertical grids if desired.
4. Observe the Change: Applying the angle will rotate the grid lines within the curtain wall, altering the layout of your mullions and panels.

This method rotates the internal pattern of the curtain wall without changing the wall element's overall position or orientation relative to its host.

Both methods offer different ways to manipulate a curtain wall's appearance or orientation in Revit.