This applies to Detailed Models only
If a red Asterisk is displayed in the element panel, this indicates that a family in the Revit model has properties which are outside the range used by Guardian Glass for BIM. This may be only one family in the model or several families. The value shown in the element panel may be within the ranges but the software has identified an element family which may have no thermal properties set or has a high thermal property.
The Façade Navigator will also display an indicator where no thermal properties have been set for an element on a specific Surface.