Measuring windows accurately is crucial for ensuring that new windows fit properly and function effectively. Incorrect measurements can lead to costly mistakes and installation delays. There are two main types of window measurements: rough opening measurements and finished opening measurements.
Rough opening measurements are taken from the framing of the window, including the header, jambs, and sill. These measurements determine the overall size of the window that will fit into the opening. Finished opening measurements are taken from the inside of the window frame, including the trim. These measurements are used to determine the size of the window sash and glass.