Insulate under attic decking or skip it?


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Old 10-19-20, 11:47 AM
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Insulate under attic decking or skip it?

My attic is currently un-insulated. There is 3/4inch decking (t and g) on top of the ceiling joists. Can I just insulate Obote the decking or should I insulate under the decking and also on top of it? The ceiling joists are 2x4.
 
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Old 10-19-20, 11:51 AM
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Not my area of expertise but I believe it's best to insulated directly over the ceiling. Also 2x4s really don't give enough support for the decking, fine for a walkway but not for storage.
 
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Old 10-19-20, 04:44 PM
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Thanks for the reply and thoughts.
 
 

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