Another snarly 'how do I trim this' question

weedyacresMarch 5, 2009

I'm hoping Handymac or other wood geniuses are around to help me through my latest quandry. We're putting in a t&g pine ceiling. Here's one view of it. On the left, it makes a transition to a drywall ceiling in the hallway and breakfast nook beyond.

Here's a view going back the other way, from the drywalled hallway. We insulated the cathedral ceiling with 1" polyiso (cellulose blown in on top)and 3'4" plywood furring strips, so we were expecting the t&g to need a stair step up to the drywall ceiling, and I figured I could do a little creative cover-up trimwork.

Alas, what we were not expecting was for the t&g planks not to end pretty evenly at the end of the polyiso. At one edge there's about 1/2" showing, and at the other edge it has grown to 2". Here are 2 views, of the left and right side, from lying on the floor directly below.

How do we make this work? Do we have to rip out that course of boards and make them all so the side along the wall gaps a little more on each board, to make up the 1.5" difference? Is there a way to trim it out so it looks decent?

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Can't tell from the pics. Is it not square to the other space or not level? Or neither?
I think a couple of pieces of thin flat stock would do it, one on the t&g ceiling to bring it forward a bit more, and another piece scribed to the drywall ceiling to close the gap. Then, if needed some 1/2" quarter round at the wood/drywall joint (or small cove or whatever).
Alternative is to plaster right up to the wood, matching the level of the sheetrock ceiling, IOW floating the ceiling until it meets the wood. Use Structolite and Durabond.

    Bookmark   March 6, 2009 at 9:43AM
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It looks like you could take a 2X4 and match the height of the t&g ceiling on one edge and an taper down to the thickness of a t&g board on the other edge. Round the edges to match the look of the t&g and mount it to the drywall ceiling. It looks like you have to cut at least one of the plywood furring strips flush.

    Bookmark   March 6, 2009 at 10:12AM
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If I am interpreting the pictures correctly, seems to me extending the ceiling T&G by one more board---so the gap is covered is the easiest.

You can bend the T&G a bit by removing some of the shoulders of the groove piece on the back and shaving a bit off the tongue. That keeps the spacing close to the flat parts.

Thyen use similar trim as you use on the walls to finish the end.

    Bookmark   March 6, 2009 at 10:25AM
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Are you planning to continue the T&G into the hallway, or are you just looking for a neat way to cap it off?

One idea that occurs to me, maybe more involved than you'd like, is to build a sort of a false header, maybe 8" or so high, going across the opening into the hallway. Cover it in drywall, paint it the color of the walls, and let the hall and cathedral ceilings each butt into it.

    Bookmark   March 6, 2009 at 11:24AM
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Wow, four different ideas to close the off-levelness, all more elegant than mine had been. Thanks!

None of those will help with the out-of-squareness, though. Are you saying it doesn't matter if you look at the finished product and the last ceiling board is obviously tapered? Or, alternatively, that where that last board meets the hallway it does so out of square (so long as all gaps are covered by scribing or trim)?

    Bookmark   March 8, 2009 at 5:33PM
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The 2X4 idea should look just like another t&g board connecting the cathedral ceiling angle to the horizontal ceiling. The width should be parallel to the t&g pattern. Since it appears that you are beyond the intersection with the hall, the out of squareness should be unnoticible. Work by trimming the existing t&g spacers etc. so that the 2X4 rests flat against the hall ceiling and the edge of the t&g and scribe the 2X4 to meet the t&g. Cut with a table saw to thickness then cut the slope and rout the edges. If the thickness is consistent, it could be done in one cut. If not, it is more difficult, but doable. Poplar would probably be a good choice for the 2X4 so it can be finished to match the t&g. Good luck.

    Bookmark   March 9, 2009 at 10:01AM
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