Filling in 14 x 8 inch hole in concrete ceiling

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Topic by mitchmorty posted 07-28-2015 06:44 PM 9246 views 0 times favorited 6 replies Add to Favorites Watch
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1 post in 1242 days

07-28-2015 06:44 PM

HI Folks.
I am filling a fairly large hole in concrete ceiling (14 inch wide 8 inch deep). It is a 2story house and this hole is on the ceiling of the 1st story, floor of 2nd story.

My Question is: I am going to use fence wire as a mesh support in concrete. . Is it better to to cut the fence wire/ remesh longer so that the wire fits in like a bowl (where the sides of the hole are also supported by the mesh, or to just put the mesh down as a flat sheets?
I’m leaning with the bowl, but would appreciate any advice.

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158 posts in 1701 days

08-04-2015 01:29 PM

Using a diamond saw, cut some groves in the existing slab – from above that will fit re-bar from the box store. You want to make a # with the re-bar and tire them together at the crosses.

Now, using the same wire, tie a piece of plywood to the slab using at least 6 ties. Put a piece of hardware clothe over the re-bar and add cement mixed with limestone. Speak with a cement company for the correct mixture – they can identify what you have and what you need – there are at least 50 different mixtures for any given area.

The re-bar will keep the piece from collapsing.

-- Love woodworking and fixing most anything

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