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I've seen that mobs can be trapped within glass pane fairly easily, and would love to make a nice green house with a glass roof to let sunlight in during the day. But I can't seem to cajole my glass pane to take any shape other than the T-intersection shape that allows me and mobs to walk in through the roof.

Am I stuck using glass blocks, or is there a way to create the glass roof I desire?

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up vote 15 down vote accepted

You cannot, glass panes are only vertical.

You're gonna have to use regular glass blocks unfortunately.

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Damn...thank do people keep their trapped mobs from jumping out then? – Zibbobz Apr 13 '14 at 5:07
@Zibbobz normally what i see the glass walls are 2 blocks high, to save on glass panes rather than doing a 3x3 box they make a 2x2 box because when the glass panes join they create a small space in the middle – Memor-X Jun 30 '14 at 2:18

You need to use glass blocks. Sorry!

To keep mobs in just make 2-block high wall.

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