Creating Roof Styles

Parameter	Description
Roof Style	To modify an existing roof style, from the Resource Selector, double-click a roof style to select it. If a selected roof style's parameters are edited in the Roof Preferences dialog box, the roof style automatically changes to unstyled, indicating that the edited style must be saved as a new style to save changes (alternatively, the changes can be applied as an unstyled roof and they are not saved).
Convert to Unstyled	Converts a styled roof to unstyled
Save Preferences as Roof Style	Saves the current preference settings as a new roof style. The Assign Name dialog box opens; enter a roof style name.
Preview	Displays a sectioned preview of the roof structure, including any defined components. The top of the preview indicates the top part of the roof as it will be drawn.
Overall Thickness	Displays the thickness of the roof. The roof thickness is always determined by the thickness of its components; a roof always has one component by default.
Edit Roof Attributes	Opens the Roof Attributes dialog box, to specify the roof fill and pen settings
Datum	Select whether the datum is applied to the top or bottom of the designated component; the indicator in the Datum column updates accordingly
Components	Lists the components that form the structure of the roof, in order from top to bottom as displayed in the preview. To change the order of a component, click and drag within the # column. If multiple components are selected, changing the order moves all selected components to the new location.
Datum	A datum is the reference point for elevation settings (it does not change with any changes to the roof thickness or definition). Click in the Datum column to designate the datum component. An indicator in the column shows whether the datum is placed on the top or bottom of the component. To change the datum position, either click on the indicator to switch the placement, or click Top of Component or Bottom of Component.
Other Component settings	The remaining columns in the component list display the current settings for the roof, from the Roof Component Settings dialog box
New	Opens the Roof Component Settings dialog box to define the components of the roof; see Creating Roof Components for information on creating components
Edit	Opens the Roof Component Settings dialog box to edit the attributes of one or more selected components; changes are made to all selected components. Alternatively, to edit a single component, double-click the component to open the Roof Component Settings dialog box.
Duplicate	Duplicates one or more selected roof components; the duplicates are added to the component list right below the originally selected components
Delete	Deletes one or more selected roof components; the roof thickness is adjusted accordingly
IFC	Assigns or edits IFC data; see Viewing and Editing IFC Data

Parameter	Description
Fill	Specify the roof fill attributes. Select a fill style, or Class Style to set the fill attributes by class. Depending on the Style selected, select a fill color, pattern, or resource (hatch, image, gradient, tile) for the roof.
Pen	Specify the roof pen attributes. Select a pen style, or Class Style to set pen attributes by class. Depending on the Style selected, select a color, pattern, or line type resource for the roof.
Thickness	Select the line thickness; to use a custom thickness, select Set Thickness from the line thickness list (see Line Thickness Attributes)
Make All Attributes By Class	Sets all fill and pen attributes by class.
Remove By Class Settings	Removes all class settings for fill and pen attributes.

Parameter	Description
Class	Specifies the default class for the roof
Energos	Roofs can participate in Energos energy analysis calculations (see Energos Energy Analysis Module). Vectorworks Architect is required to conduct an energy analysis; however, energy-related parameters can be specified here for informational purposes.
Include in Calculations	When selected, the roof is eligible to be included in energy calculations, depending on the energy analysis settings for layer/class, element inclusion, and so on.
Object Boundary Type	Select the type of roof (exterior or foundation). The system list can be modified; see Specifying System Sets. Editing the system parameters, or adding new ones, allows the exterior and interior RS (surface resistance) values to be specified. If the selected boundary roof calculations are not satisfactory, edit the system list to be extremely specific about the roof surface resistance parameters. For a finer level of detail about the boundary roof material, click Advanced. The Advanced Settings dialog box opens. Specify advanced settings. ● Exterior Material: For exterior roofs, indicates the general color of the exterior material. The system list can be modified; see Specifying System Sets. The Absorptivity and Emissivity factors are automatically calculated and displayed. ● Reduction Factor Shading: When the roof is shaded (especially during the summer), enter a shading reduction factor from 0–1, where 0 (zero) indicates total shade and 1 indicates no shade.
Calculated R-Value/U-Value	Based on the location of the roof within the building (boundary type) and orientation of the heat flow (surface resistance values), the wall R-Value/U-Value is calculated and displayed. This value, along with the area of the roof, is critical for a correct assessment of the building envelope in energy calculations.
Override Calculated R-Value/U-Value	Select this option to override the calculated R-Value/U-Value and enter a manual value for the roof instead in Manual R-Value or Manual U-Value

Parameter	Description
Use Component Textures	Uses the textures defined for the roof components to texture the roof. This option can also be selected for an existing roof from the Render tab of the Object Info palette.
Use Object Textures	Uses the textures defined below for the roof parts (see Applying a Texture to an Object for information on applying textures to an object with parts)
Part	Applies the texture selected in Texture to the selected parts of the roof
Revert to Overall	If a part was assigned a texture but it should inherit its texture from Overall instead, select the part and click Revert to Overall. The part moves back below the divider in the Part list, and (from Overall) displays as its texture name.
Texture	Applies the selected texture to the selected Part. If Class Texture is chosen, uses the texture defined by the roof’s class; see Applying Object and Component Textures by Class. Any roofs with that roof style use the texture defined by the roof’s class for that part of the roof (unless overridden). If Texture is chosen, from the Resource Selector, double-click a texture to apply it to the selected Part. The texture set here overrides the object class texture. Textures can also be set from the Render tab of the Object Info palette. Textures applied from the Object Info palette override the textures set here.