A hardware store clerk said to start at the top and nail each pre-punched hole, being sure that the metal was very tight before proceeding to the next. There are several windows that swing in, the rest are double hung with weights…air gets in through the rope channels too. East Dane Designer Men's Fashion. I am interested in installing the spring bronze product. That must have sounded like a really stupid question! I have just finished installing spring bronze on my first two windows using brass nails and a punch.