Installing a pre-hung door for the first time? I’ve done it a few times now, and I’ve packed every pro-level tip and trick ...

In our first installment of House Calls with James Tully, we’re showing you how to install a bi-fold door. The homeowner we helped took her doors off to repaint the walls of her home.

To trim our door, we bought a jamb kit and ripped two pieces of it to 13/8 in. wide for our 15/8-in.-wide door. We installed these at the top and side of the door opening.

Sliding doors (also called bypass doors) are easy to install yourself. These are ideal for wide closets because they give you easy access to either side depending on which door panel you slide open.

When installing new wardrobe doors, you can measure the opening, or you can simply use the old parts as templates to mark where you need to cut the new parts. (Getty Images) ...