How to Frame a Door
Time Required: Under 2 hours
If you’re building a new partition wall that includes interior doors, you’ll need learn how to frame a door opening properly. Save yourself time and money by purchasing the prehung door you want to install before you begin framing. That way, you can be sure the opening is wide enough.
This guide will show you how to frame a prehung interior door.
Before you begin, it’s important to determine which type of lumber will work best for your door frame. Focus on the structural qualities of the wood as well as the visual appeal of the finish.
The following are the most common types of wood used for interior door frames:
- Pine – this is the most popular since it’s easy to source and widely available throughout the country. It’s a softer, lightweight wood that is resistant to swelling and shrinking.
- Alder – this wood features a uniform and moderately fine texture, making it great for interior use. It’s a versatile wood that sands easily and has virtually no odor.
- Fir – this type of lumber is known for its superb durability and strength. It can feature a wilder and more distinct grain pattern with a coarser texture.
- Birch – this wood features a uniform, fine-grain finish and is popular for interior trim, paneling and a variety of furniture pieces.
- On the ceiling, snap a chalk line to indicate where the top plate of the new wall will be installed.
- Cut the material for the top plate to length.
- Nail the top plate through the ceiling into the ceiling joists or blocking.
- Mark the floor where the sole plate will be installed with a plumb bob.
- Nail the sole plate to the floor by driving the nails into the floor joists or blocking.
- Don’t nail the sole plate to the floor between the jack stud locations because this portion of the plate will be removed before the door is installed.
- Make a header by fitting two 2 x 4s around a 1/2-inch piece of plywood.
- Cut the header to fit between the king studs.
- Install a cripple stud between the header and the top plate, halfway between the king studs.
- Toenail the cripple stud to the top plate and the side of the header.
Your frame is complete and you are now ready to install your prehung interior door.