What is the recommended cut for the vertical face of the door header when removing rain gutters?

The recommended cut for the vertical face of the door header when removing rain gutters is 6 to 10mm. This specific measurement is important to ensure that the structural integrity of the door header is maintained while still effectively allowing for the removal of the rain gutters. A cut within this range provides sufficient clearance without excessively compromising the material, which could lead to functional issues or damage over time.

Using a cut that is too shallow may not fully eliminate the rain gutter, while a cut that is too deep could risk weakening the door header, leading to potential problems, such as misalignment of the doors or reduced protection against weather elements. The specified 6 to 10mm cut strikes a balance, ensuring both the effective removal of the rain gutters and the preservation of the door's overall function and aesthetics.