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Old 08-25-2010, 10:40 PM   #1
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unstable subfloor for tiling

Hi, everyone, thanks for reading

We put down new subfloor (3/4" chipboard, glued and screwed to slats of 13" distance) on old subfloor. We are planning to use Easyboard as sublayer for tiling (dont ask how we still have Easyboard). Tiling will be for the kitchen, 15'X15', hall way5'X30 and two baths, using normal inexpensive tiles.

Now we put the Easyboard down following the instruction, we reallized that our floor may not be stable enough for tiling:

If our friend of maybe 260lbs jumps a bit on the floor, we can see vertical movement almost everywhere about maybe at least 1/4", anyhow, we see the floor moving under his jump/hard steps.

in this kind of situation, should we be concerned about tiling on such floor? Should we totally abort the idea? (which will be hell for the "designer" of the project.)



Last edited by hohadcr; 08-26-2010 at 09:32 AM.
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Old 08-26-2010, 06:37 PM   #2
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Mud Pack

rather than using a manufactured underlayment, you should construct a mud pack underlayment with chicken wire and dry mud.....it will absorb over the joists....it is like cement but different...you may have to go thicker and adjust your doors and transitions


Last edited by Aaroncarpet; 08-26-2010 at 06:39 PM.
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Old 08-27-2010, 12:10 AM   #3
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do you have access to the floor joist from below?
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