You’re sitting in the living room one day and a thought pops in your mind: I’m going to open the windows and get a nice summer breeze!  Ahh the thought of that refreshing summertime air cooling you off, filling your senses with a clean, crisp aroma. OK, perhaps oversold, but you get the point. You want to open your windows.

You proceed to the nearest window, likely a Double Hung, and lift the bottom sash upwards. And what happens?  The sash falls right back down.  Hey, what gives? Read more