Ratings & Reviews for Johns Manville R- 38 Attic Unfaced Fiberglass Batt Insulation 64-sq ft ( 24-in W x 48-in L)
Ratings may include incentivized customer reviews.
What Customers Are Saying
The insulation product was widely praised for its effectiveness in improving temperature and sound control. Customers found it easy to install, with the pre-cut and pre-scored design simplifying the process. Many reported significant reductions in energy bills and noise levels after installation. While a few experienced minor issues, the majority found the insulation to be of high quality and durable, delivering strong performance benefits.
Customer review summary generated by AI, including incentivized reviews.Perfect for a DIYer. Not the pink fiberglass.
Perfect to easily insulate our attic. Installaton is easy, This was relatively easy to rip to size. Dimensional was perfect, Thermal resistance is great. Not moisture resistance or sound absorbing. This is for the attic area not walls so that is by design. Moisture and sound are not an attic requirement and could do more harm than good. I will purchase a few of these at a time (I can fit 3 into my vechile) until I get done. I installed in tshirt and shorts, not the pink fiberglass stuff.
Verified Purchaser
Easy to install
Would RecommendThis insulation was easy to handle and install, and the kraft facing made it straightforward to position where I needed it. It fit well between the framing and feels like a solid, good-quality product. I’m happy with how the project turned out and would use it again for another insulation job.
From R- 30 Attic Kraft faced Fiberglass Batt Insulation 58.66-sq ft ( 16-in W x 48-in L) Verified Purchaser
Steve
Would RecommendI bought this product and it did the job and even had some left over to take back. it was a very good product.
From R- 30 Attic Kraft faced Fiberglass Batt Insulation 58.66-sq ft ( 16-in W x 48-in L) Verified Purchaser
Great Product for Great Price
Would RecommendGreat Price, Easy pick up
From R- 15 Wall Kraft faced Fiberglass Batt Insulation 67.81-sq ft ( 15-in W x 93-in L) Verified Purchaser
Easy installation
Would RecommendEasy installation
From R- 15 Wall Kraft faced Fiberglass Batt Insulation 67.81-sq ft ( 15-in W x 93-in L) Verified Purchaser
Fills the area and keep it fluffy, dont back it in
Would RecommendFills the ceiling in old Hawaii wide spacing ceiling
From R- 30 Attic Kraft faced Fiberglass Batt Insulation 58.66-sq ft ( 16-in W x 48-in L) Verified Purchaser
Better than the pink stuff
Would RecommendMuch better than the pink stuff. So easy to work with and a lot less itchy
From R- 15 Wall Kraft faced Fiberglass Batt Insulation 67.81-sq ft ( 15-in W x 93-in L) Verified Purchaser
Good insulation qualities
Would RecommendSome pieces not cut correct.
From R- 19 Wall Unfaced Fiberglass Batt Insulation 87.18-sq ft ( 15-in W x 93-in L) Verified Purchaser
2
Would RecommendExcelente
From R- 19 Wall Kraft faced Fiberglass Batt Insulation 87.18-sq ft ( 15-in W x 93-in L) Verified Purchaser
If getting multiple, may be easier to get delivery
Would RecommendEasy to use
From R- 19 Wall Kraft faced Fiberglass Batt Insulation 87.18-sq ft ( 15-in W x 93-in L) Verified Purchaser
Thank you for choosing Johns Manville for your project - If you have any additional details on the pieces not being cut correctly, please feel free ...