I HAVE BLOWN IN INSULATION IN THE FLOOR OF THE ATTIC AND AM WONDERING IF ADDITION OF ROLLS OF UNFACED FIBERGLASS INSULATION LAID OVER THE BLOWN IN TYPE WOULD BE BEST FOR INCREASING THE R VALUE OR SHOULD I CONSIDER USING FIBERGLASS WITH A VAPOR BARRIER STAPLED TO THE SLANTED AREAS OF THE ROOF AS A BETTER METHOD OF INPROVING THE QUALITY OF THE INSULATION OF THE HOUSE.
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