Kolbe & Kolbe Millwork Co.

These multifunctional windows offer a sleek aesthetic with energy-efficient features. More

When Jeld-Wen sales manager Brent Adair retrofitted his San Diego home with one of his company's long-span folding door systems last year, he expected it to be an oddball job. The product, which the company introduced a year ago, wasn't conceived with existing homes in mind. But that hasn't stopped remodelers from using it. “When we initially came out with this system I thought it would be used only in new construction,” Adair recalls. “As it turns out, half of our jobs have ended up being retrofits.” More