.Map :: MoHAA Mapping

I'm building a map, 1st map i gave up cuz it was a try'er
now i'm building 1 to be good
but i'm in my map and it looks funny on some edges from a distance

look

It's called z-fighting and happens because you've placed layers of textures over each other (always a bad idea) or very close to each other.

ok but how do i solve it
how do i detexture it ?

any anser pls

Select the whole brush and recaulk it, deselect it and retexture the faces.

Some textures do "cull" at a distance. Only way to solve it is to make a new shader, or just don't make the map so big. If it is stuff "bleeding" through the wall, make the wall thicker.