I thought it could not but I was looking through pl_badwater and many of the roofs are func_detail and they touch the skybox. I know some of the other valve maps use displacements for roofs so it's not an issue. Can somebody comment on this? Can do or no can do? My roofs are func_detail and it sure would make it much easier to make it so my skybox can touch them. I know func_detail cannot seal the map, this is for the interior of the map. Thanks.