We often replace windows less than 20 years old that have failed due to poor quality, improper installation, or both. On this particular job, a developer had converted a vintage YMCA structure into 35 condo units around 1990. The off-brand wood windows he installed were doomed to failure from the start, thanks to the manufacturer's liberal use of untreated, finger-jointed pine, and the lack of care paid by the carpenters during the installation. Read more