Casing a Half-Round Archway
Trimming an opening with no jamb is a pesky problem. October 3, 2009
I just drywalled four different size archways. The customer would like to have some hardwood put up on the facing of the archways (not underneath). Anyone have any suggestions? How can I do this myself?
From contributor K:
It makes no sense to apply a casing to an opening and not have a jamb installed in the opening. Aside from that, it's an involved process to make a simple flat casing for a curved opening not to mention a casing with a face profile. The best thing to do is sub it out to a company that specializes in this kind of product.
From the original questioner:
Thanks for the information, I think I will sub it out.
From contributor B:
The primary problem of trying to apply trim to a plaster or drywall opening is that the curve of the opening is not going to be a "perfect" curve. It will typically weave in and out to an extent that is not very visible to the eye, but will become very visible when you are trying to maintain a 1/4" reveal between the casing and the opening edge.
There are only two options, use a true radius (for a half round for example) casing and let the reveal vary (I've seen templates that easily move up to 1/2"), or make the casing match the edge of the opening, which will usually make for a not very pleasing to view moulding. Best is to make both the jambs and matching casing. This will shrink the opening somewhat unless the drywall jambs faces are removed.
Would you like to add information to this article?
Interested in writing or submitting an article?
Have a question about this article?
Have you reviewed the related Knowledge Base areas below?
KnowledgeBase: Knowledge Base
KnowledgeBase: Architectural Millwork
KnowledgeBase: Architectural Millwork: Millwork Installer
All rights reserved. No part of this publication may be reproduced in
any manner without permission of the Editor.
Review WOODWEB's Copyright Policy.
The editors, writers, and staff at WOODWEB try to promote safe practices.
What is safe for one woodworker under certain conditions may not be safe
for others in different circumstances. Readers should undertake the use
of materials and methods discussed at WOODWEB after considerate evaluation,
and at their own risk.
335 Bedell Road
Montrose, PA 18801
Copyright © 1996-2013 - WOODWEB ® Inc.