# Tile Covering

The component catalog contains the different tiles that belong to a tile model. Depending on the construction and the tile types, a tile model can be used to lay various coverings, e.g. in bond or whether half tiles should be used. How the tile is laid is recorded in the tile covering.

If this dialog is opened in the 'Battens/Tiles - Assign' function via the browser button, changes can also be made there only for the next input, which do not necessarily have to be saved in the central tile coverings.

In the 'Coverage' column of the roof surface specification, a tile covering can be set in the tile position and the tile covering can be checked with the browser button. This provides the option to set an appropriate tile covering already in the roof surface specification, which is then automatically applied to all roof surfaces where that roof surface specification was used.

The tile covering can be saved under a name using the standard element at the top of the dialog box. Under that name it can be selected for assignment to a roof surface. The icons to the right provide the usual management functions. See 'Save settings' in the 'General Help' manual.

The following settings can be made for a tile covering:

**Tile manufacturer**: The manufacturer of the tile model. Selecting the manufacturer allows the selection of that manufacturer's tile models.

**Tile model**: The tile models available from this tile manufacturer, i.e. those entered in the component catalog.

**Ridge tile type**: The ridge tile type is decisive for certain values of the slope profile (batten spacing). Therefore, its selection is important for the tile covering.

**Tile distance to ridge line, .. valley line, .. wall connection**: The tile position runs exactly up to these roof surface lines and is also billed accordingly in the measurement. The tiles themselves end at a certain distance from these lines. That distance can be defined here for each case. Thus the correct areas are used here both for the measurements and for the tile calculation; these are different from each other.

**Covering**: The actual covering is defined in the following parameters. The available options depend on the tile types of the tile model and on the settings already chosen: For example, if the covering should be staggered but without half tiles, whole and half verge tiles must be used.\
In the images below the reference image, the currently selected coverings are shown. Verge tiles are highlighted in blue, half tiles highlighted in red.

**Lay tiles staggered**: Some tile models can be laid staggered, i.e. in bond. For this, the tile model must contain at least half tiles or half verge tiles.

**Half tiles may be used**: If the tile model also contains half tiles, it can be specified whether they may be used to compensate the laying in width. For example, if 26.5 tiles fit side by side on a roof surface, the roof surface can remain unchanged if half tiles are allowed. Otherwise, the width must be increased, for example to 27 tiles.

**Verge tiles**: Depending on the chosen settings, covering can now be done with whole verge tiles, whole and half verge tiles, finishing stones (double bead) or without verge tiles. These tile types are used exclusively at verge edges. The finishing stone is only used on the left verge; on the right a normal whole tile is then laid.

**Half tiles in ridge/valley area**: At ridges and valleys it often occurs that the remaining tile after the oblique cut is too narrow to fasten. If it is narrower than a half tile, the tile is replaced beforehand by a half tile. As a result, the last tile is correspondingly wider by half a tile and can be fastened more securely.
