How long to change windscreen?

[Uther]

Got someone coming to change the windscreen on my car tomorrow, what started as a small chip turned into a 2 foot crack whilst sitting in the sun.
How long does it normally take to replace it?
Its a 2010 Renault grand Scenic if that makes any difference.

 

[Uther]

Mine is non heated as well, so hopefully they can do it in a couple of hours.

 

[Uther]

In the end it took an hour, with a further one hour wait to let the glue dry.
I'm glad I don't have to pay for it, the Autoglass bill was £779.92!