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Reflective Aluminum Foil Insulation Kit 8pcs 20.5x54 inch with Tape and Adhesive Pads

Reflective Aluminum Foil Insulation Kit 8pcs 20.5x54 inch with Tape and Adhesive Pads

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$114.68at WalmartObserved at 3:04 PM

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Our take on the Reflective Aluminum Foil Insulation Kit 8pcs 20.5x54 inch with Tape and Adhesive Pads

This is an 8-piece radiant barrier kit: eight 20.5 x 54 inch reflective foil panels, about 1 inch thick, plus tape and adhesive pads for mounting. The panels are meant for windows, attics and garages, where they reflect heat rather than trap it like fiberglass or foam board. At $114.68 at Walmart as of November 4, 2026, it is the only new price listed, so there is no recent range to compare it against.

Best forRenters who cannot cut or install permanent insulationGarage doors and attic hatches that get direct sunQuick window heat control in summerSmall DIY jobs where tape-and-pad mounting is enough
Pros
  • No tools or fasteners needed beyond the included tape and pads
  • Reflective surface blocks radiant heat without adding much weight
  • Panels are pre-cut at 20.5 x 54 inches, so no trimming for most windows
  • Removable, which suits rentals and seasonal use
  • Works in attics and garages as well as on windows
Cons
  • Radiant barrier does little for conductive heat loss in cold weather
  • 1 inch of foil is far less R-value than foam board or batt insulation
  • Reflective foil can trap moisture if sealed tight against a surface
  • Eight panels cover roughly 60 square feet, enough for a few windows only
  • Only one store lists it new, so price competition is thin

Reflective Aluminum Foil Insulation Kit 8pcs 20.5x54 inch with Tape and Adhesive Pads prices at every store

  • WalmartNew

    In stockSold by Seller

    $114.68Observed at 3:04 PM
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Reflective Aluminum Foil Insulation Kit 8pcs 20.5x54 inch with Tape and Adhesive Pads price history

Lowest price we've seen: $114.68 on Nov 4 at Walmart. Tracked across 1 store since Nov 4.

Specifications

Insulation Type
Radiant Barrier Insulation
Insulation Thickness
1 in
Recommended Use
Attic, Garage
Rec Location
Window
Product Net Content Parent
1 Each

Questions and answers

Is this kit worth it compared with foam board?
For blocking summer radiant heat at windows or a garage door, yes, and it is easier to mount. For winter heat retention, foam board or batt insulation performs better per inch.
How much area do the 8 panels cover?
Each panel is 20.5 x 54 inches, about 7.7 square feet, so the kit covers roughly 60 square feet total. That is about three to four standard windows.
Can I cut the panels to fit?
Yes. The foil-faced panels can be cut with a utility knife or heavy scissors to fit smaller windows or odd openings.
Does it come with everything needed to install?
The kit includes tape and adhesive pads for mounting. You may still want a straight edge and knife for trimming.
When is the price lowest?
Radiant barrier kits tend to dip in spring before cooling season and in fall clearance sales. At $114.68 at Walmart as of November 4, 2026, it is the only new listing, so watch for a second seller before assuming a discount.
Where is the Reflective Aluminum Foil Insulation Kit 8pcs 20.5x54 inch with Tape and Adhesive Pads cheapest?
At Walmart, for $114.68, as of our latest check.