window replacement ends

Window replacement in a building or structure ends at the moment when the last new window is installed as part of a continuous process to replace the majority of existing windows with newer ones. This process starts when window replacement begins.

The last installation belongs to a continuous replacement process affecting a majority of the existing windows. Replacing a few isolated windows does not meet that project scope.

Window replacement begins when the first old window is removed. The end is installation of the last new window in the project, rather than the first replacement window becoming usable.