replacing windows - how messy is it going to get?

[MousyMouse]

having a couple of sash box windows removed and replaced with triple glazing.
do I need to get protecting sheets?

[georgedawes]

the company who does it should cover everything up, but it's not too messy.

[wonkylegs]

We had ours replaced in our last flat and it was fine... I'm hoping for another good experience with our new house as we will be having the same done there.