Rigid Foam Panels Under Drywall Ceiling

Discussion in 'Insulation and Radiant Barriers' started by aNYCdb, Jan 3, 2017.

  1. Jan 3, 2017 #1

    aNYCdb

    aNYCdb

    aNYCdb

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    I'm getting ready to start hanging drywall on the ceilings (ceilings were previously acoustic tile stapled to ferring strips) in my project house and one of the issues that I've run into is that the with the strips removed I'm going to have about a half inch gap between the top of the drywall on the walls and on the ceiling and I was wondering if it would make sense to install some half inch foam board to close that gap rather than having to mud up the gap or cover with trim. Has anyone tried this?
     
  2. Jan 3, 2017 #2

    nealtw

    nealtw

    nealtw

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    Tape the joints with red TUCK TAPE and that is your vapour barrier, and drywall screws come in all length. Ceiling drywall should be 5/8" thick.
     
  3. Jan 3, 2017 #3

    kok328

    kok328

    kok328

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    install crown moulding after you get the ceiling installed.
     
  4. Jan 4, 2017 #4

    Snoonyb

    Snoonyb

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    Tape with the fiberglass mesh tape and apply with a corner trowel which will create a pocket, and, backing for the drywall compound.
     
  5. Jan 5, 2017 #5

    aNYCdb

    aNYCdb

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    I think I'm going to try Snoonyb's method first and then kok328's if it doesn't look great.
     
  6. Jan 5, 2017 #6

    bud16415

    bud16415

    bud16415

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    Maybe I don’t understand your problem, but I would run my sheets tight to the ceiling and leave any gaps at the floor.
     
  7. Jan 5, 2017 #7

    nealtw

    nealtw

    nealtw

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    He is working on the ceiling the walls are already done.:nono:
     
  8. Jan 6, 2017 #8

    Snoonyb

    Snoonyb

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    Your application skills will determine the results.

    While crown will add an aesthetic dimension, It's important to prevent any drafts.
     

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