Failing builder grade windows calls for replacement windows in newer homes. This replacement window project is located in Gwinnett County, GA. Â Replaceing builder grade windows in homes less that 15 years old is occuring more often. These windows had seal failure and were extremely uneffecient. We installed new 6000 series double-hung windows and the house looks almost brand new! Do you have a home built after 2005 with foggy windows? We can help! 470-275-5159