Forum Title: Wall thickness change affecting door
Currently I have 1/4 inch OSB on the wall, I want to replace it with 5/8 inch fire rated drywall. There is a door in this wall. So I assume I just remove the brick molding, rip the wall out and put up the drywall. But then when I go to replace the brick molding there is going to be a gap of: 5/8 - 1/4 = 3/8 inch How is this handled?
Category: Windows & Doors Post By: WILLIE BARKER (Warren, OH), 01/23/2019

Welcome to the Forums! It sounds like it just needs adjusting. Can you tell us the brand and model of the door? It may be that the latch mechanism needs to be turned 180...esp if this is a reversible direction door. The latches on sliding doors normally reach out then pull back, shouldn't need any forcing.

- GERTRUDE SHELTON (Encinitas, CA), 02/21/2019

You say that you have 1/4 OSB on the wall. (inside?) And you are ripping it off and replacing it with sheetrock? Brickmould is the exterior trim that is usually put around the outside of a door. So if your drywall is going inside, you would not remove the brickmould. You would remove the interior casing. As for the added thickness, you would just add a 3/8 extension onto either the trim or the door jamb before putting it on. You won't find this at Lowe's, it is something you would probably need to custom make by taking a board and ripping it down to the dimension you want on a table saw. The closest thing you would find in the store would be either parting stop which is 3/4 x 1/2 pine, or screen moulding which is 3/4 x 1/4 pine. Lattice is similar to screen moulding but it comes in wider dimensions, like 1 3/4 x 1/4. And most of those dimensions are actually slightly smaller by 1/32 to 1/16, because lumber nowadays is like is candy bars- they keep getting smaller. The only problem you can run into when adding the 3/8 extension onto the interior side of your door jamb is that the strike plate may not be long enough to prevent the door latch from striking the trim first. You can usually avoid this if the extension jamb is positioned so as to leave a 1/4 reveal, or step, around the perimeter of the door jamb. Then if the casing (the interior door trim) is positioned so as to create another 1/4 reveal, or step... then the latch may just miss the trim when the door closes. -OR- you can just get an adjustable or extended strike plate.

- FLORENCE AGUILAR (Santee, CA), 02/03/2019

Quote: Originally Posted by XSleeper You say that you have 1/4 OSB on the wall. (inside?) And you are ripping it off and replacing it with sheetrock? Brickmould is the exterior trim that is usually put around the outside of a door. So if your drywall is going inside, you would not remove the brickmould. You would remove the interior casing. As for the added thickness, you would just add a 3/8 extension onto either the trim or the door jamb before putting it on. You won't find this at Lowe's, it is something you would probably need to custom make by taking a board and ripping it down to the dimension you want on a table saw. The closest thing you would find in the store would be either parting stop which is 3/4 x 1/2 pine, or screen moulding which is 3/4 x 1/4 pine. Lattice is similar to screen moulding but it comes in wider dimensions, like 1 3/4 x 1/4. And most of those dimensions are actually slightly smaller by 1/32 to 1/16, because lumber nowadays is like is candy bars- they keep getting smaller. The only problem you can run into when adding the 3/8 extension onto the interior side of your door jamb is that the strike plate may not be long enough to prevent the door latch from striking the trim first. You can usually avoid this if the extension jamb is positioned so as to leave a 1/4 reveal, or step, around the perimeter of the door jamb. Then if the casing (the interior door trim) is positioned so as to create another 1/4 reveal, or step... then the latch may just miss the trim when the door closes. -OR- you can just get an adjustable or extended strike plate. It is an interior type door between the garage and living space, it has the same stuff around the door on both sides of the wall (interior casing?). I'm going to start by pulling off the interior casing around the door on the garage side so I can take off the 1/4 OSB and put up the 5/8 sheetrock. Then I'm going to do the exact same thing on the inside which is 1/4OSB as well and put up 5/8 sheetrock. So in total I'll be short: 3/8 +3/8 = 3/4 inch (or 3/8 inch on each side). I need to google some of your terminology, lol. But I think you are saying I'll need to fit a 3/8 inch piece of wood in that gap between the interior casing and the door jamb (on each side). Instead of flush recess it 1/4 inch and recess the interior casing 1/4 inch from that. Is that about the size of it?

- PAUL TAYLOR (Chico, CA), 03/02/2019

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