Read/write type parameters of system families

When analyzing an element, there is a difference between loadable families and system families.

From a loadable family, you can get the type name from an element (family instance) and use that to read/write type parameters. This is easy.
The same is not true for system families. You can manipulate instance parameters from placed elements of type floor/wall/roof but that seems to be it really.

Is there a way to reference to the roof/wall/floor etc types so that certain parameters (Model, Description etc) can be updated? I’ve searched the forums before placing this topic but couldn’t find anything useful.