How to Cut a Prehung Exterior Door to a Custom Height
You don't have to order an expensive custom door if your rough opening is a non-standard size.
You don’t have to order an expensive custom door if your rough opening is a non-standard size. Buy a stock door instead and make it fit.
In this video, carpenter and former senior editor Andy Engel shows us how to disassemble a prehung exterior door; how to measure and cut the door slab to fit an existing opening; and how to shorten the jamb to match.
In this video, Andy Engel will demonstrate how to:
- Disassemble the door and jamb
- Make a shooting board—a tool for making accurate cuts with a circular saw
- Measure and make the cut on the door slab
- Cut the jamb to match
- Reassemble the door and jamb