Quote from Lpfreaky90 on February 27, 2012, 8:48 pm

Are those brushes func_details?
ONLY world brushes can seal your map.
Maybe upload your vmf?

Quote from Spam Nugget on February 27, 2012, 10:23 pm

Try deleting the brushes and replacing them. Also, did you carve or use vertex modifiaction on those brushes? cause that can stuff them up at times.

Quote from BEARD! on February 28, 2012, 3:53 am

lpfreaky90 wrote:

Are those brushes func_details?
ONLY world brushes can seal your map.

It may help to turn off the func_detail auto visgroup, then you can see what the compiler sees when it searches for leaks.

Quote from Spam Nugget on February 28, 2012, 5:03 am

Oh and some transparent brushes, like glass and grates, cannot be used to seal maps. Even as world brushes.

Quote from Brainstone on February 28, 2012, 9:14 am

If your map is too big, disable Radios Culling. (shortkey C)

Also, sometimes corrupt entities with strange properties can also produce errors.

Quote from josepezdj on February 28, 2012, 9:33 am

portal2companioncube wrote:

My map supposedly has a leak. I used "load pointfile" to find it and it's showing leaks where I have brushes. I even put more brushes around those and it still showed it as a leak. Anyone got any ideas?

If you have already tried all above, I can only think of this: you have leaks indeed but you cannot see them... Have you tried to set the smallest grid (1 unit) and go where the pointfile leads you? sometimes, overall if you copy/paste usually (I'm telling this from my own experience), there are mini-little-thin-spaces between brushes that you can only see if you look closely.

Check out if this is your case...

Quote from neco on February 28, 2012, 2:54 pm

Entity origins may cause leaks, too. Once that almost drove me crazy
You can center the origin via menu >> center origins...

Quote from portal2companioncube on February 28, 2012, 7:15 pm

I accidentally put a post that I meant to put in this topic in "Textures." It's the one towards the end with the cap letters that say, "WHAT'S GOING ON?"

Quote from Spam Nugget on February 29, 2012, 3:20 am

Try selecting everything in your map by drawing a big box around it using the select tool, copying it and pasting it in a new map. Ive had a leak problem before that was solved by doing this; occassionally hammer creates corrupt entities that are invisible and unselectable but which cause leaks.