Hello I am building a marquise ( covered entrance roof) on a historic home undergoing renovation. The roof is shaped like a barrel vault with short flats on each side. the roof radius is 47″ I need to fit curved crown moulding at the top of the curved fascia to follow the arc of the roof,then miter into the short horizontal crown at the flats,and then miter to return to the house wall. Has anyone done anything like this? Normal crown isnt a problem but the curve is. thanks Bob
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well now yer gettin into my business. Curved crown is best done by kerfing the back. Close saw cuts just shy of coming through the ogee. If it is painted it is easier to do a practice pc. or so to estimate the distance between kerfs, and trial is needed. Stain grade? segmented pcs. milled to shape are an option. Run yer ends wild and plan yer miters from the horizontal run. I could do it a hell of a lot easier than explaining it. Let's hope it is a 4.5 " crown and not wider, layering may also be an option depending on the profile involved.
Btw, finger jointed will break, must be stain grade even if ya paint it.
Sphere, I think he is doing the inside of a barrel roll type roof/ceiling. I think that he could cut two peices into 1/4" strips to make one bent molding.
I'm thinkin outside, fascia to to dripedge junction. Cornice type thang. The two different radii is the kick in the butt part, the fascia leg is in compression while the top is in tension..custom flex fab. is an option, just not one I would choose.
Go Stab yourself Ya Putz! Ya think I Parked here?
You are going to need flexible molding and you will need to specify the radius so they can make it for the application. Don't make the mistake of buying straight flexible molding because it probably won't make the curve. Also you might want to buy the straight flexible for the small straight runs because the profiles will match, sometimes you can have a problem with the flexible molding matching the wood crown close enough. Forgot the manufactures name.
We become by effort primarily what we end up becoming
- Zig Ziglar
If it's a tighter radius it's better to have a custom shop make up some for you. The problem I have had with the flex crown is the compression-tension situation with the top and bottom because you're going in two different directions, it can actually tear apart. I have kerfed and that works fine as long as it's being painted, it can be very delicate though. If you're not having a shop make it up with a 'curved moulding machine', I think the best and most lasting way is to make 2 solid built up peices and then saw them into flexible strips making sure they match into the full profile of the crown, make a bending jig to the correct radius and then do a laminate glue up with the strips.
You can buy flexible molding in straight runs but can only use it for minor curves. If you are going around a corner or running on a vaulted ceiling you need to order it with the corret radius so it fits right. the "compression-tension" situation you mention is solved when you order it with the correct radius.We become by effort primarily what we end up becoming
- Zig Ziglar
Hey Bob,
How about this:
View Image
C-BM1
1-1/8'' X 6-5/8''
C-BM256
1-1/8'' X 7-5/16''
C-BO538
3/4'' X 5-3/8''
C-C21
1-1/8'' X 6-1/2''
C-CM449
13/16'' X 5-1/4''
C-CM49
3/4'' X 5-1/4
C-CM525
3/4'' X 5-1/4''
C-CT425
5/8'' X 4-1/4''
Showing 1 - 8 of 70 items
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