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mollywobbles
Covering old stovepipe hole

I am in the process of patching my 1912 plaster bathroom walls in preparation for applying Master of Plaster coating. One corner has a chimney which is no longer in use and is covered over above. There is about a 6 in stovepipe hole with the usual metal hole cover. I would like to fill this in and cover like the rest of the walls. I know I can use a piece of sheetrock, mesh, etc, but am wondering how can I put something in there to stabilize the sheetrock--or is there something better to use? I have a mesh patch which is somewhat reinforced to put over it, but I don't think it is solid enough by itself. Of course the surround is plaster over brick. Suggestions?

JLMCDANIEL
Re: Covering old stovepipe hole

You can mortar some pieces of brick in the hole first.

Jack

mollywobbles
Re: Covering old stovepipe hole

No idea how to do that, especially in a 6" round hole.

A. Spruce
Re: Covering old stovepipe hole

As long as the chimney has bee terminated properly, filling in the hole to the room is no problem.

Install some backer material. If you will be using plaster, I'd go with as large a piece of plywood as you can fit through the hole, follow that up with some wire lath, then layer in the plaster. If you're going to fill the hole with drywall, then a couple of sticks across the hole will suffice, cut your patch and shim stock to flush with wall surface, then tape and mud in with drywall compound.

Let me reiterate, as long as the chimney has been terminated properly, filling the hole is not a problem. :cool:

mollywobbles
Re: Covering old stovepipe hole
A. Spruce wrote:

As long as the chimney has bee terminated properly, filling in the hole to the room is no problem.

Install some backer material. If you will be using plaster, I'd go with as large a piece of plywood as you can fit through the hole, follow that up with some wire lath, then layer in the plaster. If you're going to fill the hole with drywall, then a couple of sticks across the hole will suffice, cut your patch and shim stock to flush with wall surface, then tape and mud in with drywall compound.

Let me reiterate, as long as the chimney has been terminated properly, filling the hole is not a problem. :cool:

Thanks, A.Spruce. I did do this repair about a year ago. I did it almost exactly as you have now suggested, plastered, primed and painted--it looks great. It is nice to know someone thought that's how it should be done!:)

A. Spruce
Re: Covering old stovepipe hole
mollywobbles wrote:

Thanks, A.Spruce. I did do this repair about a year ago. I did it almost exactly as you have now suggested, plastered, primed and painted--it looks great. It is nice to know someone thought that's how it should be done!:)

W0W! It is not often we get a return response from questions we answer. Thank you, Molly, for taking the time to come back for the update. I am also very happy that we were able to help with your problem. Glad things worked out for you. :cool:

Fencepost
Re: Covering old stovepipe hole

If there is any chance at all that the chimney will ever be reused as a chimney (such as opening a hole somewhere else to put a stovepipe), then a patch such as this MUST be done with that in mind to preserve the integrity of the chimney.

However, a chimney as old as your probably will never be suitable for use as a chimney without the installation of a chimney liner, in which case the patch isn't as critical.

Benjamin
Re: Covering old stovepipe hole
Fencepost wrote:

If there is any chance at all that the chimney will ever be reused as a chimney (such as opening a hole somewhere else to put a stovepipe), then a patch such as this MUST be done with that in mind to preserve the integrity of the chimney.

However, a chimney as old as your probably will never be suitable for use as a chimney without the installation of a chimney liner, in which case the patch isn't as critical.

Even if it was lined to be to code the patch would still need to be the full thickness of the brick out of masonry. In this case it probably wont matter but poor patch jobs is one reason we need to scan all chimneys before we line them.

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