What is double bubble foil insulation best for?

It reflects radiant heat and traps air in its bubble layers. It works best on ducts, pipes and small reflective barriers, not as a substitute for fiberglass in a full wall or attic.

How much area does one roll cover?

The roll is 4 inches wide and 16.5 feet long, so it covers about 5.5 square feet before overlaps. Plan on extra for the 1/2-inch seam overlaps.

Does the adhesive backing hold on ducts and pipes?

The peel-and-stick backing is meant for quick installs, but it grips best on clean, dry, room-temperature surfaces. Dust, moisture or cold can weaken the bond, so clean the surface first.

Can I use it in a wall or attic?

It can act as a radiant barrier in those spaces, but its R-value is low. Check local code and pair it with bulk insulation where real thermal resistance is needed.

How do I seal the seams?

Overlap adjoining strips by about 1/2 inch and press the adhesive edge down. Foil tape on the seams gives a tighter, more durable seal.

NOBRAND

Self Adhesive Double Bubble Foil Insulation Roll 4" x 16.5 Ft

Best price now

$32.28at WalmartChecked Nov 12

Prices are checked against each store and labelled with when.

Visit Walmart

NOBRAND

Self Adhesive Double Bubble Foil Insulation Roll 4" x 16.5 Ft

Best price now

$32.28at WalmartChecked Nov 12

Prices are checked against each store and labelled with when.

Visit Walmart

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Price facts

Last seen at $32.28 at Walmart on Nov 12.

Our take on the Self Adhesive Double Bubble Foil Insulation Roll 4" x 16.5 Ft

A 4-inch by 16.5-foot roll of double bubble foil insulation with a peel-and-stick backing. The two layers of air bubbles between reflective foil give it a thin profile that bends around ducts, pipes and tight framing. The adhesive backing lets one person install it without glue or tape. It is a small-format roll, so it suits wrapping pipes and patching small areas rather than insulating a whole wall or attic.

Best forWrapping ductwork and pipesPatching small gaps in framing or sheathingSolo DIY jobs where tape and glue are a hassleTight spaces where thicker insulation won't fit

Pros

Peel-and-stick backing installs without extra glue or tape
Double bubble layer adds trapped air for some thermal resistance
Foil surface reflects radiant heat
Thin and flexible, so it bends around pipes and corners
Cuts with scissors or a utility knife

Cons

Narrow 4-inch width limits coverage on large surfaces
Short roll covers little area
Bubble foil has low R-value compared with fiberglass batts
Adhesive can fail on dusty, damp or cold surfaces
Seams need a 1/2-inch overlap for a tight seal

Self Adhesive Double Bubble Foil Insulation Roll 4" x 16.5 Ft prices at every store

WalmartNew
In stockSold by Seller
$32.28Free shippingChecked Nov 12
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Self Adhesive Double Bubble Foil Insulation Roll 4" x 16.5 Ft price history

Lowest price we've seen: $32.28 on Nov 12 at Walmart. Tracked across 1 store since Nov 12.

About the Self Adhesive Double Bubble Foil Insulation Roll 4" x 16.5 Ft

This is a double bubble foil insulation roll with a self-adhesive backing. The peel-and-stick design lets one person install it without extra glue or tape.

To seal the seams, overlap them by 1/2 inch.

Size: 4" x 16.5 ft
Type: Double bubble foil insulation roll
Backing: Self-adhesive, peel-and-stick
Seam overlap: 1/2"

Specifications

size: 4 x 16.5Source

Questions and answers

What is double bubble foil insulation best for?: It reflects radiant heat and traps air in its bubble layers. It works best on ducts, pipes and small reflective barriers, not as a substitute for fiberglass in a full wall or attic.
How much area does one roll cover?: The roll is 4 inches wide and 16.5 feet long, so it covers about 5.5 square feet before overlaps. Plan on extra for the 1/2-inch seam overlaps.
Does the adhesive backing hold on ducts and pipes?: The peel-and-stick backing is meant for quick installs, but it grips best on clean, dry, room-temperature surfaces. Dust, moisture or cold can weaken the bond, so clean the surface first.
Can I use it in a wall or attic?: It can act as a radiant barrier in those spaces, but its R-value is low. Check local code and pair it with bulk insulation where real thermal resistance is needed.
How do I seal the seams?: Overlap adjoining strips by about 1/2 inch and press the adhesive edge down. Foil tape on the seams gives a tighter, more durable seal.
Where is the Self Adhesive Double Bubble Foil Insulation Roll 4" x 16.5 Ft cheapest?: At Walmart, for $32.28, as of our latest check.