The system we’re demonstrating is for new construction. Preferably, when you exchange an existing window with a fresh 1, it should be weatherproofed working with this exact same system. Likelihood is, however, the existing windows are lacking suitable flashing, house wrap or even felt. The extent of weatherproofing you should http://andersen-window-installat83602.diowebhost.com/13326971/window-installation-new-things-to-know-before-you-buy