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Old 05-06-2007, 11:28 PM  
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this is going to be a lot harder than I thought it will be.

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Old 05-07-2007, 08:12 AM  
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Good Morning, SoFaKingCity:
I am going to have to agree with Inspector D and Square Eye. Put another joist in between each 4' space, suspend it with 5 2 X 4s on each one to stabilize it and use gypsum wallboard for the ceiling. If your garage door would interfere with that ceiling; you may want to consider raising a section of ceiling to clear the door.
It will take some extra work but it is not hard work, just time consuming.

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Old 08-23-2011, 11:42 AM  
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Default Garage ceiling installation

What about using 3/8 plywood for garage ceiling? Would 24" rafters support that weight.
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Old 04-25-2013, 12:02 PM  
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hi all: i"ve recently insulated my garage ceiling with r20 insulation inbetween the rafters and then covered it with plastic just wondering now if this o.k I live in central ontario canada. Then wondering if this don"t rote out my roof.
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Old 04-25-2013, 01:41 PM  
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Welcome squily: In the future start a new thread intead of pulling up an old one.
No; the insulation wants to breath on the open side, if you are heating the garage the poly should be under the insulation. If you really want to cover the insulation, I can't think of a good reason, but you would use house wrap. It would protect it from wind and rain but still allow moisture to evaporate thru it.

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