Curtain-Wall of Fame
For this contractor, The Curtain-Wall system is now standard equipment when replacing windows.
You can see in one photo that there was snow outside and the inside still remained warm. Not only did this save the customers heating bill, it helped win the job in the first place. Of course there was the further benefit that dust was not spread throughout the house.
Curtain-Wall keeps customers happy and happy customers means more jobs through referrals.