Although the game does not actually offer us a flat roof option we can still achieve that look if desired.
Sims 4 flat roof.
Although all of the new roofs are made from glass they each have a different pattern.
How to make better roofs.
Https www twitch tv lilsimsie more roofing tips.
That gave me a flat roof on top of the 2nd floor surrounded by a fence.
But i noticed it actually created a 3rd floor the game considered it a 3rd floor.
To add a flat roof to a building.
In the latest sims 4 patch june 2018 the sims team added six new roof patterns that allow you to create glass roofs in your game.
A roofing tutorial in the sims 4.
And from world view you could see a weird floating 3rd floor flat roof.
In willow creek a lot of the houses have roofs like this.
This is my very first sims 4 build so it s a learning experience.
Making nice roofs by norma blackburn click to enlarge.