translucent polycarbonate material

Hi all, I have an issue with a translucent material, if you change the values from 5 to 6 in the slider the properties are very different. Is the yellow roof above in the image. I need something in between but it doesn´t seem possible. When I change the value to 6 it behaves like a transparent material projecting direct light and shadows.

Any recommendation?

Thanks in advance


You might be able to get the desired effect by turning it into frosted glass. Bump the roughness up and keep the specular low. Or maybe a semi transparent PNG that would naturally be see through without touching the opacity slider.

There’s a thread on this exact subject posted recently, some good solutions in there:

Rendering polycarbonate