Glazing database - effect of adding blind on G value and Shading co-efficient - CIBSE Gain

I have created a new glazing type for use in the CIBSE Gain tool.

Now I want to create a second glazing type which includes a blind.

I have used the calculations in the CIBSE solar gain factor guide and modified all of the solar gain factors accordingly.

However, do I also need to change the following factors:

U Value

Light transmission

Shading co-efficient

SHGC

Regards

Michael