Basement build | Insulation installation
I am building my basement as per the permit and the current insulation installed by the builder is old. I believe R8 value or so as the house is 2005 built. I need to upgrade it to R20.
Currently, the insulation is a blanket installed on the top half wall. I am thinking to take down the old insulation and put the new for all 8 ft of wall.
My question is, which way is better - to put the new insulation (blanket insulation) attached to the wall as the builder did or put the batt insulation between the studs after framing?
My concern is - one insulation contractor said that when you put batt insulation between studs the area acquired by studs is not insulated (like there is no insulation behind the studs) and that will remain cold. He suggested putting blanket insulation as the builder does.
I have seen many people suggesting and doing batt insulation between studs as this also gives some space for moisture drying up.
What are your thoughts or recommendations?