What it looks like to me is possibly a problem with your video card.
Sims 3 roof fix.
These two roofs add a bit of variety by adding circular roofs.
Using the half gable tool place a roof along the thin outer edge of the second floor on both sides and a gable roof on the top section.
Necessitorial overcoming auto roof by qbuilderz.
The sims 3 store lucky palms will update link when town has a world fix mod made the sims 3 store barnacle bay will update link when town has a world fix mod made step 13 base game game performance game play mods optional this will be a list of mods that will make the game run much more smoother and some will even fix bugs these.
This is based on how things worked in sims 2 conical and dome roofs.
Choose the building which you d like to build your rooftop garden.
Roofing in ts3 has the standard pitched roof or flat tiles.
Just get the roof you want to use to cover it then drag it from the bottem left of the courner to the top right corner.
If you want a ceiling to show then place the flat roof tiles first then your pitched roof over that.
Here is my little tutorial about how to do half wall roof.
There should be a distinct difference in pitch between the top section and the sides.
Have you checked your video card to see if is compatible or if you have a video card that is replaceable have you tried adjusting the video card.
Gambrel roof tutorial by ricslady99.
How to create a basic roof with different slope angles by feldynn.
Go into edit town mode while playing the game.
This tutorial is designed to help you guys get an understanding of how to roof a house nicely within the sims 3.
Based on the pictures you ve posted the simplest solution in your case is probably to 1 wall off that area with the roof protruding through in the front where you have it bumped out a tile and 2 redraw a room around the roofing on the side and then delete the unwanted walls.
Things like this are indeed very subjective.
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Raise the roof pieces till the side pieces reach the top of the wall and lower the top piece.
In that case the game would possibly not recognise the floor being a roof and sims will most likely get a negative moodlet for having weather in their house.
Select the building of your choice evict the sims and then click on build buy.
Open the console hold down ctrl shift c on your keyboard and type testingcheatsenabled on then hit enter.