Resources: Updating a hollow core door can save time when trying to hang a completely new door. It can also save some money compared to buying a new door. To add the fake panels, Nathan used some molding, which can be found at any home center. He secured those to the door using Gorilla wood glue and a 20V Max Cordless Bradnailer, which is manufactured by Dewalt. Nathan then painted the door using Behr Marquee in Ultra Pure White. He also replaced the old brass hardware with a bedroom/bathroom door knob, which is manufactured by Kwikset.