We have vinyl windows (mostly double-paned) and live in a shady greenbelt in Seattle (i.e. wet and dark). We don't have much severe weather to worry about, just a pervasive damp cold that settles in ...
I need to try to prevent drafts coming through and around my double glazed window units as much as possible. How can I go about detecting and sealing any leaks that are letting air through the window? ...