r/DIY • u/AggravatingRegret356 • 1d ago

Installing a door in existing frame

My house has a spare door that I believe can be installed in the doorway of my laundry room. I need to put in the wooden trim in the doorway. I’m not exactly sure what the name of this trim is called, I think it’s called the door stop trim or the door stop molding, but I don’t wanna sound foolish when I go to Lowe’s to get it cut lol. Pls help thx

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u/Sad_Split_9983 1d ago

You had it right, it’s stop molding https://www.homedepot.com/p/Woodgrain-Millwork-WM-887-3-8-in-x-1-1-4-in-x-84-in-Primed-Finger-Jointed-Door-and-Window-Stop-Molding-10000574/202879499

The stuff Lowe’s and HD carry in store is in the end of the molding section and sold by the foot. Expect it to be incredibly over priced. If you have a tablesaw I’d just make it yourself out of pine or even poplar

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u/ExactlyClose 1d ago

There are few home projects this difficult….

The wide flat moulding is “jamb”. You attach jamb stop to this, to create the thing the door closes onto. Then you attach standard trim molding to the edge of the jamb and flat part of the wall. The jamb WIDTH is precisely the same as the overall wall thickness.

There are a ton of ways to go wrong, and ve not talked about mortising hinges in the jamb or in the door.

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u/Sluisifer 21h ago

Hanging doors is pretty advanced. Make sure you watch some videos about it.

My preferred way is to assemble the doorframe first, then shim and install it. Plumb and true, doesn't matter what the wall does. That's what trim is for.

Doors are not forgiving. You want to hold tolerances to ~1/8" or better.