To achieve a precise fit for a custom frameless shower screen, it’s crucial to remove the existing framed or semi-frameless screen before taking final measurements. This allows the installer to accurately assess wall and floor slopes, ensuring a perfect glass panel cut.

Measuring the wall next to the old screen is not advisable as frameless glass needs precise positioning for minimal silicon gaps. Existing aluminium frames can hide critical details that may affect the installation, making removal necessary for accurate measurements.