Hi, Im in need of a window in my garage/workshop and currently in the thought process of getting one fitted. Question is, how easy is it to do. The garage wall is single brick so is it just a case of cutting out brick and fitting window or will a joist be required to take the upper load to which there is just a roof but in time we might be extending up to create further bedrooms ?Just looking to fit a very small toilet sized window, just for a bit of light and ventilation,