Before starting this project
This project will show you how to install a patio door with nailing fin. The exterior vinyl cladding around the door frame has to be removed before the door can be installed so the new door frame can be screwed into a strip and secured directly to the structure of the house. Install flashing and you will waterproof the opening of your new sliding patio door.
Note: waterproofing and finishing a finless patio door is different.
Always follow the manufacturer’s instructions for installing an exterior door.