Re: No vapor barrier in ceiling
I'm of the same thinking and have been for awhile after a seminar about attic ventilation/insualtion 18 years ago. This had been put on by government researchers and basically the trend was that conventional thinking with ventilation is over rated --- instead making the space a conditioned space ---- not much different to wall cavities.
Originally Posted by RJordan
The one thing I have to nit pick on your posts --- you keep mentioning just spraying the underside of the roof and failing to mention the entire exterior surfaces of the attic need to be insulated. This is the only way of making a sealed envelope.
I don't believe the temperature will indeed be the same as the interior conditioned space but it will be significantly increased ---- lessoning the Delta T.
"" an ounce of perception -- a pound of obscure "