Tips for crown molding on vaulted ceiling

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Forum topic by Dewoof01 posted 11-14-2015 03:49 AM 733 views 0 times favorited 9 replies Add to Favorites Watch
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6 posts in 341 days

11-14-2015 03:49 AM

Hopefully you guys can offer some tips for me. Putting in some crown at my dad’s place tomorrow as woodworking is not his forte. Its prefinished hemlock

. I’ve done crown before and have a kreg jig and angle finder but never on a vaulted ceiling. Here’s some pics to show you a couple of the areas.

9 replies so far

View jerryminer's profile


496 posts in 858 days

#1 posted 11-14-2015 08:31 AM

For a vaulted ceiling, you will need to either:

1. Cut a transition piece at the corner, or

2. “Cheat” the spring angle on the level wall to match the slope of the ceiling. This would require re-cutting the bottom back bevel.

Check out Gary Katz explanation of the transition

View bonesbr549's profile


1137 posts in 2483 days

#2 posted 11-14-2015 01:00 PM

Take a piece of scrap and test cut your angles. It will take some time but that will get it perfect.

-- Sooner or later Liberals run out of other people's money.

View dhazelton's profile


2283 posts in 1713 days

#3 posted 11-14-2015 01:37 PM

The runs that go along the angled portion of the ceiling I wouldn’t miter. I’d miter and cope the pieces that run horizontally though. But like said above, your spring angles will probably be slightly different. That’s not a huge angle so I don’t think it’ll be too much different. I hope you have enough scrap for trial and error. I can’t tell what’s going on in that outside corner, if it’s just a straightforard 90 on the same plane….

View Dewoof01's profile


6 posts in 341 days

#4 posted 11-14-2015 04:22 PM

Thanks a bunch guys. That Gary Katz page helped. I’ve read his stuff before. Wish me luck I ordered alot of extra as this will be a pain.

View MrUnix's profile (online now)


4017 posts in 1615 days

#5 posted 11-14-2015 07:31 PM

Get ‘em close, then caulk and paint… only person who will notice it will be you.


-- Brad in FL - To be old and wise, you must first be young and stupid

View runswithscissors's profile


2127 posts in 1441 days

#6 posted 11-14-2015 11:20 PM

Mr Unix has the right idea. My kitchen ceiling was not a perfect plane (didn’t reveal itself until crown molding). Caulk easily filled the gaps, and doesn’t show at all. Much easier than trying to cope the wood to the wonky ceiling, which, by the way, is plaster over metal lath.

-- I admit to being an adrenaline junky; fortunately, I'm very easily frightened

View Daruc's profile


459 posts in 549 days

#7 posted 11-15-2015 02:04 AM

It’s a little tougher than that when you’re using “prefinished Hemlock”

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View Dewoof01's profile


6 posts in 341 days

#8 posted 11-15-2015 03:57 AM

Ya if this wasn’t prefinished wood I wouldn’t have even posted this. The transition pieces gave the best look. Turned out ok for my first time on a vaulted ceiling. Good thing any ugly cuts are 11’ high and not noticable from the ground. My parents as more than happy with the results. Thanks guys. And also the ceiling is sheetrock don’t know why you assme its plaster her metal lath especially since its only a 25 year old home.

View Daruc's profile


459 posts in 549 days

#9 posted 11-15-2015 04:08 AM

Dewoof01, He was referring to his ceiling being metal lathe and plaster.

Parents are happy, that’s the main thing. Another step towards gaining experience. The next time will turn out even better.

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