The facing on faced insulation functions like a vapor retardant. If you want a vapor barrier plus your insulation is unfaced, you have to include it with a polyethylene movie. Between-Joist Insulation: This method involves inserting insulation content in between the floor joists from down below. Insulation batts or rolls https://donovanghezv.bloginder.com/34399705/top-cieling-insulation-secrets