Glad i found that and 75 is a very high pitch.
Sims 2 individual roof slope angle cheat.
To use first build the roof.
Add a gable roof to the upper section and a half gable roof to the lower section.
Disables the ability to change.
I settled on 45 and got a semi sloped medium looking height for my little starter home.
This cheat was broken when pets shipped you could change the angle but it would not save with the lot.
Roof pitch for non flat or mansard roofs is set at 45 degrees but can be adjusted to between 15 and 75 degrees using the roofslopeangle cheat if the sims 2.
The cheat is roofslopeangle 25 75 25 is almost totally flat and looks suitable for a moblie home yay.
This is based on how things worked in sims 2 conical and dome roofs.
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.
Acceptable values are 15 75 degrees.
Sims may not be able to use objects placed at a 45 degree angle correctly and objects may clip into each other when placed at this angle.
While the roof tool is still selected hold down ctrl and alt and click on the the section of roof that you want to change.
Changes the slope angle of a roof.
Then enter the cheat.
Roofslopeangle 15 75 adjust angle of all roofs on the lot the sims 2.
Sethighestallowedlevel number sets the amount of floors allowed the sims 2.
The roof will change angles.
Nightlife or a later expansion is installed.
And yes you must have nightlife installed for it to work.
The windows let light into the upper level and depending on the height of the lower section of roof there is often no need for a cheat to place the windows.