Hammer Down Exteriors is a leader in window installation in Lafayette, IN. That makes us the first place for residents to turn to if their home’s windows need replacement. Our expert team of window installers has the tools and experience to make this all-important home improvement project simple. If your existing windows merely need repair, we can handle that, too. We excel at window glass replacement, which is a great way to extend the lifespan of your existing windows while upgrading them at the same time.