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Some interior trim questions for tongue and groove

GreyWolf92 | Posted in General Questions on

Hi guys,

I am installing 1×6 3/4″ tongue and groove walls in my house.

Having no prior experience with trim I have a few questions:

1) Where can I buy corner trim that is pre cut and is real wood (not MDF)?

I would be looking at something like the images attached

2) Same question, but for window trim/casing. I am looking for 2 1/4″

3) I eventually would live to do a tile backsplash above my kitchen counter. Will i be able to install 1/4″ cement/backer board over the t&g and tile over that later down the road or am i missing something visually that wouldn’t look right?

4) Should I install my window trim/casing over the t&g or stop them short to where the trim will be?

Cheers.

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Replies

  1. GBA Editor
    Martin Holladay | | #1

    Grey,
    Q. "Where can I buy corner trim that is pre-cut and is real wood (not MDF)?"

    A. Any lumberyard will offer a wide selection of pine trim and moldings. Go out back and look at it, and choose the profile you want. It won't be "pre-cut" -- you'll be able to buy it in different lengths (6 foot, 8 foot, 10 foot, 12 foot), but you'll have to cut it yourself with a fine-toothed saw.

    Q. "Same question, but for window trim/casing. I am looking for 2 1/4 inch."

    A. Same answer. Note that you can also use 1x3, 1x4, or 5/4x4 pine for window casing.

    Q. "I eventually would like to do a tile backsplash above my kitchen counter. Will i be able to install 1/4 inch cement/backer board over the T&G and tile over that later down the road or am i missing something visually that wouldn't look right?"

    A. The answer depends on what you want. Do you want the tile to be co-planar with the T&G? Or do you want it to be proud of the T&G? If you prefer the tile to be proud of the T&G, you have to think about how you will finish the top of the tile. The link below shows you one way to trim tile:
    https://www.thebuilderdepot.com/cacbihomapeb.html?gclid=Cj0KCQjw1dDPBRC_ARIsAJZrQfpVqxIFGWRn-VFkzJXpRbbWmu5CgfWEBMd49MCWWKX0GqGXC5Isfl4aAkh8EALw_wcB

    You can also order bullnose tile, or trim the tile with special stainless-steel trim.

    Q. "Should I install my window trim/casing over the T&G or stop them short to where the trim will be?"

    A. There are infinite ways to trim windows. You can omit the interior casing; the casing can be co-planar with the wall surface; the casing can be on top of the wall surface; you can use casing with a fancy profile or square stock; your head casing can be either co-planar with your side casing, or it can be proud. Look around (in the real world and in online photos) to determine what you think looks good.

  2. GreyWolf92 | | #2

    Thank you Martin!

    -By pre-cut, I was referring to a molded piece rather than just your basic piece of lumber. I will be able to cut with a chop saw.

    -Would probably prefer to be proud with wall but I have yet to plan out exactly where the tile will go up to. So rather than run 1/4" cement board, I'll just install t&g as normal and just tile over that later. When I get to that point, do you reccomend that I still use 1/4" cement board over the t&g?

    -For the window trim, my plan is just to trim over the tongue and groove - because I am putting up the t&g right now and I do not know the width of the trim I will use yet. Just wanted to confirm this is commonly done this way.

  3. GBA Editor
    Martin Holladay | | #3

    Grey,
    Q. "When I get to that point, do you reccomend that I still use 1/4 inch cement board over the tongue-and-groove?"

    A. Yes. Cement board is a better substrate for tile than boards, since the boards will expand and contract with changes in humidity.

    Q. "For the window trim, my plan is just to trim over the tongue and groove - because I am putting up the t&g right now and I do not know the width of the trim I will use yet. Just wanted to confirm this is commonly done this way."

    A. In most homes, the window jamb extensions are designed to be wide enough to end up flush with the wall finish (usually drywall). One-eighth inch proud of the drywall is much better than 1/8 inch shy of the drywall. The casing is installed on the interior side of the wall finish, and spans the gap between the wall finish and the jamb extension. I like to leave a 1/4 inch reveal on the jamb extension.

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