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Crown on a vaulted ceiling

10/30/15       
Mike

I would appreciate any tutorials, youtube vids, etc that will help me do crown on a vaulted ceiling. I have a closet system where the system stops just before the vault. Then, there will be a facia board that goes almost up to the ceiling and then the crown up to the ceiling.

The right and left systems to from 11-7/8" to 15-7/8".

I can do the face going up the "vault, but what im struggling with is how to wrap it around the face and have it snug the ceiling at both the lower and higher frontal areas that are 15-7/8"

Anyone?

10/30/15       #2: Crown on a vaulted ceiling ...
Jeff M

I've read your explanation through a couple of times and still struggling with understanding it. Maybe a pic?

10/30/15       #3: Crown on a vaulted ceiling ...
Mike

I need to figure out how to cut numbers 16 and 17 amd the reverse for the far end because the unit is shallower on each side


View higher quality, full size image (1334 X 750)

11/1/15       #5: Crown on a vaulted ceiling ...
Russ

Website: http://www.mr-moulding-knives.com

The profiles will change from straight run to a vaulted ceiling run based off of the rise and run of the ceiling. We have written about this in the past post on this site, look in the history of post in knowledge area. I will try and find an example for you I have a little later,
Good luck
I hope this helps
Russ

11/1/15       #6: Crown on a vaulted ceiling ...
Russ

Website: http://www.mr-moulding-knives.com

Here are the examples of how the profile changes based on the rake angle of the incline
I hope this helps you understand why you're having issues with the cuts.
All the best
Russ

Click the link below to download the file included with this post.

CROWN_4P500.pdf



Click the link below to download the file included with this post.

CROWN_4P500a.pdf

11/1/15       #7: Crown on a vaulted ceiling ...
Mike

Thx Russ. I havent started cutting yet. Im looking to find out how to determine what angle the either top and or bottom back side angle needs to be, based on the angle of the roof off the back wall.

11/6/15       #8: Crown on a vaulted ceiling ...
B.H. Davis Member

Mike,

The issue isn't the angle of the cut.....it's the size of the profile.

The piece of crown between cut #16 and #17 has to have a wider face than the piece running up the slope to point #17.

This is because the ceiling is sloping upward and away from the top of the #16 to #17 crown. It has to stretch itself out to reach that higher ceiling.

The opposite is the case with the return moulding at the bottom of the slope as it has to reduce in profile width.

Sometimes you can cheat on this by leaning the two return moulding over somewhat.

If you don't see this try picturing it this way.

Make a short outside corner test glue up on the work bench. This will be a standard outside corner up against a flat ceiling. About 12" pieces on both sides of the corner would work fine.

Once the glue on the corner dries tip this sample up so one side is running at the ceiling angle. You'll see the return piece tilts upward since it is attached to upslope length of crown.

If you took this piece to your installation location you would find that the #16 to #17 piece of crown does not have the correct ceiling projection. To give it the correct ceiling projection you would have to stretch out the profile. That is a 3 1/2" crown would have to become something like a 4" crown. This stretching has to be done uniformly so the profile continues to match up. The result brings you back to your question..........figuring the angle for the 3 1/2" upsweep crown to meet the #16 to #17 return crown.

This is what others here have meant by it's a different profile on the return.

This is much easier shown than explained. I hope I've helped somewhat in painting a picture in your mind.

BH Davis

11/11/15       #9: Crown on a vaulted ceiling ...
Steven

The crown molding lengths that are running parallel with the vault are going to be in a different plane than the lengths running perpendicular across the vault if you install the molding so that it is resting on the wall and ceiling the way it was designed to lay.

Consider the fascia boards going up the rake of a roof and how they are clipped off at the bottom because the piece is traveling in a sloped plane and the miter has to turn back to a level plane, so it is a compound cut and the miter is longer than the miter of the board on the level plane.

It's the same principle with the crown, and the transition piece on an inside corner would give the look of clipping off the bottom of the crown molding going down the slope back to a level plane. Hint: the transition piece will have an inside corner cut to miter with the level crown and an outside cut, cut right side up on the saw, to miter with the piece running up the vault in a sloped plane.

In the image posted, the pieces that are running across the vault are not laying properly against the face of the wall; especially the one on the high side of the vault would be visibly off the wall. JMHO, but when I see crown installed like this I think it looks tacky.

You'll need to use transition pieces to turn the crown from one plane to the next if it is going to be installed properly. Those pieces can look silly also, especially on an outside corner.

That being said, if it is small enough, you can fudge the angles and the way it is designed to lay to make it work with some sanding and shaping of the miters.

I've heard of using differing widths of crown with similar profiles to make these miters, but have never actually tried that one.

You could also use corner blocks for both the inside and outside corners if that is acceptable.

I realize this isn't a tutorial like you were looking for, but hopefully it helps you visualize and understand better whatever tutorials you come across.

11/11/15       #10: Crown on a vaulted ceiling ...
joe lepiarz

Hi Mike,

The photo you posted shows the crown cut and installed in a standard fashion just as it would be done on a level ceiling,no special measures needed to get that look.To avoid a gap at the bottom of the # 16 to 17 piece you can remove some material from the backside at the bottom so it sits tight.If you want the flat parts of the crown to be level then you will have to use more complicated measures as everyone else is describing.If this is in a closet then it should be ok to take the less complicated route.

joe

4/19/23       #12: Crown on a vaulted ceiling ...
davis john Member

Website: https://incrediboxgame.co/

Installing crown molding on a vaulted ceiling can be a bit challenging, but with some careful planning and execution, it can be done.


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