Woodworking & Power Tools Forum - Festool Owners Group > GENERAL DISCUSSIONS > Building Materials > Drywall with MDF????
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Author Topic: Drywall with MDF????  (Read 3591 times)
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Matthew deBeaupre

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« on: July 23, 2009, 12:27 AM »
Can drywall be mudded well to MDF? There is a transition where we need to run a drywall ceiling into an MDF face - curious if anybody has tried this.

Thanks a bunch
m@
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Peter Halle
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« Reply #1 on: July 23, 2009, 10:17 AM »
My guess is that a crack will develop at the joint.  Different expansion contraction rates.  Not knowing the exact application I would suggest that you look to see if a j bead or other transition joint would work to allow for the movement.

Peter
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Holzhacker

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« Reply #2 on: July 23, 2009, 11:07 AM »
I cannot reasonably imagine it working and not cracking in short time. I would also recommend a transition joint instead. A drywall endbead, a run of 1 1/8" stop moulding as a detail, etc. painted the same color. This would stop any call backs.
If I had to try to mud it ... mesh tape, structolite base finished with DB and mud.
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