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Old 01-19-2013, 11:52 AM   #1
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Micore board on concrete slab floor before granite hearth?


I am putting in a built in electic fireplace (39" wide one) and we are going to do a granite facing, with that comes a 1ft wide by 66" long granite hearth...

The floor is a granite slab, do you still need to put a micore board under this, or can granite be placed right onto concrete with no problems?

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Old 01-19-2013, 12:19 PM   #2
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Micore board on concrete slab floor before granite hearth?


Right on the concrete is the way to go.

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Old 01-19-2013, 12:33 PM   #3
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Micore board on concrete slab floor before granite hearth?


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Originally Posted by joecaption View Post
Right on the concrete is the way to go.
that's what my original plan was until I got the instructions with the granite facing kit and it says "use micore board on concrete slab to stabalize granite hearth" how much more stable then concrete can you get? I was thinking this is a misprint and that should of been for a wood subfloor?
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Old 01-19-2013, 01:32 PM   #4
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Micore board on concrete slab floor before granite hearth?


i would follow the manufacturers installation instructions or your warranty will be null and void.
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