You may confirm that the changes have been made by selecting the glazed element in Revit and checking the Analytical Properties in Revit. These will have updated, subject to the thermal properties selected.
It may sometimes be necessary to restart Revit for new Glass Types to appear in Revit’s list. Several Surfaces may be assigned Glass Products or sample types and when complete, Revit may be restarted. All new Glass Types will be sent to Revit and will display in the next session.
Once Glass Types have been added to Revit, they will be available for further use in this project and other projects without any restart.
Note: thermal properties and specifications of Glass Types are are hardcoded and will not be modified by changes to the thickness of the element in Type Properties. The assembly of the Glass Type is often given in the description. Thicknesses for solid elements (Floors/Roofs/Walls) will affect the U-value/R-value as they are dynamic in Revit. Thicknesses of layers for solid elements as well as materials assigned will affect their thermal values.