How to use glass without distorting?

Development Rendering
1

So I am new in using unreal engine and I am trying to use a glass for a wall and apparently it ended up distorting it like this.
http://i.imgur.com/uCgFvWG.png (For some reason I cant upload to the forums)
as u can see in the right, it splits up the wall…

How do u properly use glass?

2

I just don’t use any refraction at all for flat glass! With a material like this, you’ll not have any distortion.

16474eb41d592549b921bb9e84425181f33081cf.jpeg