Simple question:

Does overlapping brushes hurt the map or compile process at all? It doesn't seem to, to me, but it might be unnoticeable to me too. Reason I ask is because I have some complex sky brushes in this map Im making, which overlap.

no, they don't affect the compile process, they only create unnecessary polies and give strange views

k thanks very much :)

You probabley have a small map.

I have found that overlaping brushs does effect the compiling times, after all it has to compile more polygons :)

Try to reduce or eliminate any overlaping world brushs.

You can over lap entities with world brushs as this doesn't create anymore polygons for example, func_wall overlaping a world brush.

I don't know if overlapping sky brushs cause a problem though. I Never overlap sky or world brushs.