While it’s true that quality and brand will heavily impact how many years you’ll get out of new replacement windows or a new exterior door, it’s not the only factor to consider. Installation makes a difference, too. If done improperly, it can dramatically shorten your new windows’ lifespan.
Installed correctly, a window (or door) is supported on all sides by the opening that surrounds it. This gives it structural integrity, according to DunRite Windows & Doors Owner Sal Sucato. It needs relatively equal pressure on all sides from an opening), and a strong foundation underneath that can bear its weight.