Trouble adding multiple glazing options

[Cj Lawrence]

Hi I'm currently running Therm 7.8 and I'm having a problem where I can't add multiple glazing options in my simulation. I made sure nominal thickness were checked in both the windows7 and therm software. The thickness of each glass option are approximately the same.

[Robin Mitchell]

The nominal thickness of the complete glazing system needs to match the thickness in the base glazing system. 

Can you provide a screen shot of the base glazing system and the glazing systems you are trying to add in glazing options? 

On Thu, Jan 8, 2026 at 9:40 AM Cj Lawrence <cliftonl...@gmail.com> wrote:

Hi I'm currently running Therm 7.8 and I'm having a problem where I can't add multiple glazing options in my simulation. I made sure nominal thickness were checked in both the windows7 and therm software. The thickness of each glass option are approximately the same.

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Robin Mitchell

Windows & Envelope Materials Group
Lawrence Berkeley National Laboratory

[Cj Lawrence]

Typically  windows7  would round the glazing options to the nearest whole number(See attachments)  so that when I imported the library into therm I can simply perform multiple simulations of the base model.