R-value insulation over top of double bubble
Hey eveyerone, I’m new to this site and was referred by the great group over at Garage Journal. I live in central Kentucky (climate zone 4A) and just has a 32×40 pole barn built.
The builder installed double bubble insulation because it was “included” and he told me I could add insulation on top of that. The crew at Garage Journal said I should double check that advice over here. My plan was to install studs, then hang OSB, and then use blow in attic style insulation behind the walls and in the attic. But there seems to be some concern with it causing a moisture problem between the double bubble and the blow in insulation.
I will be installing a 36K BTU minisplit this fall to heat and cool the garage. I would say I’ll keep it around 55-60 in the winter months (3-5 months a year) and 75-80 in the summer months (3-5 months a year). In the spring and fall the minisplit will not be on much as temps linger in the 50-75 range.
So my primary question is, do I need to remove the double bubble before installing the R-value insulation in the walls? I’ve attached some pics of the building if that helps at all.
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