[plugin search] find/lable overlapping faces

[clubber2k]

Hi,

Need some help finding a plugin, if it exists.. Tried to search for it but these key words always lead to cleanup plugins. which aren't what I'm looking for..

I sometimes get overlapping faces that flicker and don't look good on render.
these are usually on different blocks / components.I'm looking for a way to find them fast

example: a building where the component has both a floor and roof, after you stack them together you get the roof and the floor overlapping and flickering.

when its a small model, or my model only I usually know where they are. when I co-work with others and/or I have large complex projects I always miss a few.

I can't believe you can make a script to figure out on its own which to delete - but a script to label overlapping faces (like straylines but for faces) would help allot when preparing models for render.
any thoughts?? thanks