Hello

You can see in the screenshot that I have an object used as a fence going around the perimeter of the property.

I would expect the fence to block the light however the isolux lines go past the fence and into the other side which is not an accurate representation of the light spill.

Things I have tried: Ensuring my horizontal illuminance calculation surface is at the same level as the base of the fence (i have even tried raising the grid so that it is slightly higher than the base of the fence).

Many thanks for all your help.