8-Piece 24x48 inch Reflective Aluminum Foil Double Bubble Insulation Kit with Tape

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$117.78at WalmartObserved at 3:43 PM

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Our take on the 8-Piece 24x48 inch Reflective Aluminum Foil Double Bubble Insulation Kit with Tape

This is an 8-piece kit of double-bubble radiant barrier insulation, each sheet 24 by 48 inches (about 8 sq ft per sheet, roughly 64 sq ft total) with reflective aluminum foil on both faces and 1 inch of bubble core. It blocks radiant heat rather than insulating by mass, so it suits attics, garages and windows where you want to cut solar gain or keep heat from radiating in. The kit includes tape for seaming. At $117.78 at Walmart as of November 4, 2026, it is the only new price listed, so there is no recent range to compare against.

Best forAttic rafters and knee walls where radiant heat is the main problemGarage doors and ceilings that get sun-bakedWindow coverings for summer heat gainDIYers who want a cut-with-scissors, no-mess material

Pros

Foil on both sides reflects radiant heat in either direction
Bubble core gives a small air gap and some R-value, roughly R-3 to R-4 for 1 inch
Light, clean and easy to cut with scissors or a utility knife
Tape included, so no extra purchase to seal seams
Works for attics, garages and windows, not just one application

Cons

Radiant barrier is not the same as bulk insulation; it will not replace fiberglass or foam in a cold climate
Foil surfaces tear and crease if handled roughly
Needs an air space facing the hot side to work well
Only about 64 sq ft total, so a full attic takes several kits
No vapor barrier rating; sealing and ventilation still matter

8-Piece 24x48 inch Reflective Aluminum Foil Double Bubble Insulation Kit with Tape prices at every store

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$117.78Observed at 3:43 PM
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8-Piece 24x48 inch Reflective Aluminum Foil Double Bubble Insulation Kit with Tape price history

Lowest price we've seen: $117.78 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 a substitute for attic insulation?: No. It is a radiant barrier with a thin bubble core, roughly R-3 to R-4. Use it to reflect heat, and keep bulk insulation for actual thermal resistance.
How much area does the kit cover?: Eight sheets at 24 by 48 inches is about 64 square feet total. Measure your rafters or windows and expect to buy more than one kit for a full attic.
Can I use it on windows?: Yes, cut to size and face the foil outward. It blocks radiant heat but also blocks light, so it suits storage rooms and garages better than living-room windows.
Does it need an air gap?: Yes. Radiant barriers perform best with a facing air space. Stapling directly against a solid surface reduces the benefit.
Is $117.78 a good price?: Walmart lists it at $117.78 as of November 4, 2026, and it is the only new price shown, so there is no recent range to judge against. Compare per square foot with other foil-bubble rolls before buying.
What is in the box?: Eight 24 by 48 inch foil-bubble panels and a roll of tape for joining seams.
Where is the 8-Piece 24x48 inch Reflective Aluminum Foil Double Bubble Insulation Kit with Tape cheapest?: At Walmart, for $117.78, as of our latest check.

Our take on the 8-Piece 24x48 inch Reflective Aluminum Foil Double Bubble Insulation Kit with Tape

Pros

Foil on both sides reflects radiant heat in either direction
Bubble core gives a small air gap and some R-value, roughly R-3 to R-4 for 1 inch
Light, clean and easy to cut with scissors or a utility knife
Tape included, so no extra purchase to seal seams
Works for attics, garages and windows, not just one application

Cons

Radiant barrier is not the same as bulk insulation; it will not replace fiberglass or foam in a cold climate
Foil surfaces tear and crease if handled roughly
Needs an air space facing the hot side to work well
Only about 64 sq ft total, so a full attic takes several kits
No vapor barrier rating; sealing and ventilation still matter

Questions and answers

Is this a substitute for attic insulation?

No. It is a radiant barrier with a thin bubble core, roughly R-3 to R-4. Use it to reflect heat, and keep bulk insulation for actual thermal resistance.

How much area does the kit cover?

Eight sheets at 24 by 48 inches is about 64 square feet total. Measure your rafters or windows and expect to buy more than one kit for a full attic.

Can I use it on windows?

Yes, cut to size and face the foil outward. It blocks radiant heat but also blocks light, so it suits storage rooms and garages better than living-room windows.

Does it need an air gap?

Yes. Radiant barriers perform best with a facing air space. Stapling directly against a solid surface reduces the benefit.

Is $117.78 a good price?

Walmart lists it at $117.78 as of November 4, 2026, and it is the only new price shown, so there is no recent range to judge against. Compare per square foot with other foil-bubble rolls before buying.

What is in the box?

Eight 24 by 48 inch foil-bubble panels and a roll of tape for joining seams.

Where is the 8-Piece 24x48 inch Reflective Aluminum Foil Double Bubble Insulation Kit with Tape cheapest?

At Walmart, for $117.78, as of our latest check.