I cannot build roof

[Jurgen773]

Hello, for last 3 days i was building my base and now i started to build roof (roof like the ramp). I build the roofs on the edges but in the middle i cannot build them. I tryed lot of things but i just cant. (Roof is created out of 8 blocks of roof (now 6) 4 in each floor. the bottom floor in good but the second middle 2 blocks are not placable) Sorry for english

[n00B]

Did u place pillars? If the square is too big, try placing walls in the middle and create 'two sides' ... typically when the last floor is too big the roof parts that to go to high before they 'meet' which is quite realistic actually. Had same problem, i clearly suck at architecture, and placing walls in the middle helped me to at least cover up top

[beamed by darius]

thank you SOO much nOOB i had this problem as well this helped a lot