How to I make faces opaque on the inside? I don't know what I'm doing wrong, but whenever I make progress on buildings and other such things I'm designing in Blender, the view changes itself so that whenever I look at an object from the inside, everything becomes invisible, but whenever I see it from the outside, it's opaque. This is so irritating. Does anybody know how I can fix this annoying problem? Look at these two images that demonstrate it. I've switched between solid and texture, and that still doesn't fix the problem. enter image description here
You can apply solidify modifier to the walls and give the thickness as required.