I'm going to tile over 3 sided brick fireplace all the way to the ceiling.
To do this I have to build a frame and mount backer board from about four
feet up. I plan on mounting some expanded metal over the brick and then
cover with a layer of thinset. About how much thickness can I expect this
metal+thinset to add to the brick. Approximately. I'll need to know this
so I can build the frame and have the backer board end up flush to
thinsetted over brick.
pic of what I've got now.
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I think if you do a little research on the subject you will find that the
wire should be scratch coated with mortar before you level it with a skim
coat of the thinset. The mesh is sold at Lowes and HomeDepot on either the
drywall or concrete aisle depending on the store. The mesh is not needed
over a sound, prepared brick or block surface. A scratch coat and finish
coat is enough.
The entire process and the thickness is dependant of your skill level with
the trowel. I would make up a test board, measured without the mesh, with
the mesh and after the final application to get an estimation.
Considering the skill level involved in what you want to do, you may find
that covering the bricks with the hardieboard so that you have a complete
flat surface is a better option. That way you would build your frame, add
drywall to flush to the brick, then cap the entire mess with hardieboard and
set your tile.
Real plaster or real stucco work does take a good bit of learned skill.
Learning on something you will look at every day for some time is not always
the smart action. -:)
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