new cement above insert

Old 12-18-03, 07:51 AM
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new cement above insert

When I replaced my old fireplace box by an insert (Pacific Energy Vista) some cement directly above the insert door fell off, so it is now possible to see the metal liner through what is a hole.

I am wondering how to replace the cement that fell, a piece about three inches thick, by two feet long, and maybe six inches wide. How can it be made to stick to the concrete and stones above? Should it be reinforced? With wire, metal bars? Should there be a metal plate underneath it?

I bought a pre-mix of cement and sand. What would be the best cement-sand-water composition for this kind of job??

Thanks in advance.
Old 12-19-03, 08:02 PM
Doug Aleshire's Avatar
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I assume that you have the insert out so the best thing, if you can do this is to make a form. Your idea of using some metal is a good one and possible drilling holes on each end and inserting a pc of rebar to assist in holding it up.

Take a look at this site for more on mixtures.

You really don't need anything special but perlite is a fireproofing additive.

Good Luck!

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