We just became first-time homeowners back in March, and I've discovered that the bathroom door is in bad shape and needs replacing. My fiancé has also been complaining about my gaming volume being too high. After some research, I found that replacing our current hollow-core doors with solid-core ones could really help with sound insulation. I'm looking to replace the bathroom door, and thought, why not swap out the bedroom doors too? I've already bought 4 solid-core door slabs (not pre-hung) for the project. I understand that I'll be adding an extra hinge along with the two existing 3" hinges.
Here's my plan for installation:
1. Cut the doors to size using the old doors as a template.
2. Use a router with a hinge template to cut out spaces for the hinges and hardware.
3. Create a spot for a third hinge on the door frame.
4. Install the hinges and the door handle, then check the fit.
5. Paint or finish the doors.
6. Install the doors.
Got a couple of questions:
1. Should I upgrade to larger ball bearing hinges?
2. Will I need to bevel the doors, and how much extra work will that be?
3 Answers
I've swapped out several doors too! Just a heads up, your door frames might not be perfectly square, so don't be surprised if you need to adjust the door a bit or even trim the top if necessary. Using shims and those pump-up air bags can really help fit the door properly. And remember to double-check the backset of the hinges before cutting! A small mistake can lead to big issues when installing. Good luck!
Hey! When it comes to your hinge question, you don’t necessarily have to change the hinge size unless you feel like it—it's mainly a personal preference. Also, most solid-core slabs come bevelled already. As for supporting that heavier door, I suggest putting a 3" screw in the middle hole of each hinge for extra stability. If you decide to remove any casing on the hinge side, it will make it easier to place shims for better support.
If soundproofing is your main goal, make sure to address any gaps around the door; they can let sound through. Adding a good door sweep at the bottom can help a lot. And with new doors, if you use latex paint, let it cure for a couple of days before closing the doors to prevent sticking. A little wax on the stops can also help!

Totally agree with the wax tip! It really does help keep things smooth.