I am pretty sure that blow in insulation is not for "under an addition", it is for attics & hollows in walls.
You probably need to staple batts of insulation up to the underside. Or, spray expanding foam type up onto the underside.
I am pretty sure that blow in insulation is not for "under an addition", it is for attics & hollows in walls.
You probably need to staple batts of insulation up to the underside. Or, spray expanding foam type up onto the underside.
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