While window replacement has become a fairly standard remodeling job, it can still present challenges, especially when the window being replaced is in a brick wall. In this article, veteran remodeling contractor Mike Sloggatt describes his process for this tricky project. To start, Sloggatt preps the opening, taking care with the removal of the old window. Next, he flashes the rough opening and makes sure to integrate the new wall sheathing with the existing building paper. Sloggatt's next step is to integrate the new window with the wall. First, he installs the window, using caulk and foam to air-seal and weatherize; then, he adds an extra layer of sealing for more protection. Finally, Sloggatt installs a site-built sill pan.