What are the acoustical qualities of QuietZone® acoustic batts compared to R-11?
The acoustical performance of QuietZone® acoustic batts are similar to R-11. Note – if QuietZone® acoustic batts are not available in your area, R-11 fiber glass insulation would be an acceptable substitute. Do not use QuietZone® on exterior walls as the facing is not a vapor retarder. R-13 or R-15 fiber glass batt insulation is recommended for exterior walls.