White Reflective Foam Core Insulation Roll Rafter R7
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$24.88at WalmartChecked Nov 12
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This is a 16-inch by 25-foot roll of closed-cell polyethylene foam insulation, 3 mm thick, faced on both sides with reflective aluminum foil in a white finish. The rippled surface is meant to hold an air gap against a rafter, and the roll is flexible enough to wrap ducts, pipes and stud bays. It claims an R-value of 13.67 in a rafter application, a vapor barrier, and 19 dBA of contact noise reduction. It suits sheds, garages, crawl spaces and metal buildings where fiberglass batts are awkward; it is not a substitute for thick batt insulation in a cold climate, and the R-value depends on the air space you leave it.
In stockSold by TWCUSEP SUPERSTOREReturns: Sold by a Walmart Marketplace seller; returns go to the seller under the seller's returns policy.
This is a reflective foam core insulation roll for use in rafters. It has reflective aluminum foil on each side of a 3 mm closed-cell polyethylene foam center. The finish is white and non-perforated, and the roll is 16 in x 25 ft.
The insulation acts as a vapor barrier and helps prevent condensation. It prevents 97% of radiant heat transfer, and its R-value is unaffected by humidity. It also reduces contact noise by 19 dBA.
The material is elastic and seals around nails, so nail holes don't leak. It keeps its shape over time and doesn't collapse. Its rippled surface increases airflow. It resists UV, doesn't promote mold or mildew, and doesn't provide a nesting place for rodents, bugs or birds.
