Rebus #169 When Im Cleaning Windows

When-Im-Cleaning-Windows
Difficulty Level: Free, Hard

If your new to Rebuses, you can read how to solve a Rebus here (link opens in a new window).
 
Do you need a little help? Click to reveal a clue to the above Rebus.
A clue to help decipher the hidden meaning – This is a two part puzzle, you have the word “Window” and a section highlighted “Ow”. What would cause you to say “Ow”?

[sociallocker]

Do you think you have got it? Click to view the answer.
The word word “Ow” represents pain along with the word “Window”, to give the answer: Window-pane
[/sociallocker]