Is this a replacement for fiberglass or foam board insulation?

No. It is a radiant barrier that blocks heat transfer by reflection. It adds little conductive R-value, so it works alongside bulk insulation, not instead of it.

Can it be used on windows?

Yes. The reflective face blocks radiant heat, and the white vinyl side can face the room. It is opaque, so it darkens the window.

The closed-cell foam holds staples without tearing, so it can be stapled to wood framing or rafters. Cut it with a utility knife or scissors.

Yes. It is Class 1 / Class A fire rated and has passed ASTM E84 and ASTM E2599 testing.

Does it work in cold weather?

The aluminum face reflects radiant heat in both directions, so it can help keep heat in during winter. It still needs an air space to work as a radiant barrier.

TWCUSEP

Reflective White Foam Thermal Insulation Heat Shield Windows

Best price now

$14.44at WalmartChecked Nov 12

Prices are checked against each store and labelled with when.

Visit Walmart

TWCUSEP

Reflective White Foam Thermal Insulation Heat Shield Windows

Best price now

$14.44at WalmartChecked Nov 12

Prices are checked against each store and labelled with when.

Visit Walmart

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Price facts

Last seen at $14.44 at Walmart on Nov 12.

Our take on the Reflective White Foam Thermal Insulation Heat Shield Windows

This is a 2' x 4' sheet of closed-cell foam bonded between a metalized aluminum film and a white vinyl facing. It reflects 97% of radiant heat and emits under 3%, and it is Class A fire rated per ASTM E84. It is a radiant barrier, not a thick batt: it blocks radiant heat in attics, walls and windows but adds little R-value on its own. It suits DIYers sealing a garage door, attic rafters or a window who want a light, staple-friendly sheet rather than bulk rolls.

Best forAttic and rafter radiant barrier projectsGarage door and window heat shieldingDIYers who want a light, staple-friendly sheetCutting radiant heat rather than adding bulk insulation

Pros

Reflects 97% of radiant heat, emits under 3%
Class A fire rated and passes ASTM E84
Closed-cell foam holds staples without tearing
Lightweight and easy to cut to size
White vinyl face looks cleaner than bare foil

Cons

Thin foam adds little conductive R-value
Single 2' x 4' sheet covers a small area
Foil face can crease and tear if handled roughly
Not a substitute for batt or blown insulation

Reflective White Foam Thermal Insulation Heat Shield Windows prices at every store

WalmartNew
In stockSold by TWCUSEP SUPERSTORE
$14.44Free shippingChecked Nov 12
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Reflective White Foam Thermal Insulation Heat Shield Windows price history

Lowest price we've seen: $14.44 on Nov 12 at Walmart. Tracked across 1 store since Nov 12.

About the Reflective White Foam Thermal Insulation Heat Shield Windows

This is a reflective foam thermal insulation panel for use as a heat shield, such as on windows. It is built from one layer of closed-cell foam bonded between two facings. One facing is highly reflective metalized aluminum polyester film. The other is durable textured white vinyl.

The panel is lightweight but strong, and it holds staples without tearing. It does not compress, collapse or disintegrate.

It reflects 97% of radiant heat and emits less than 3%. It is a Class 1 / Class A fire rated radiant barrier that has passed the ASTM E84 and ASTM E2599 tests.

Color: White
Size: 2' x 4'
Core: One layer of closed-cell foam
Facings: Metalized aluminum polyester film on one side, textured white vinyl on the other
Heat reflection: Reflects 97% of radiant heat; emits less than 3%
Fire rating: Class 1 / Class A radiant barrier
Tests passed: ASTM E84, ASTM E2599
Brand: TWCUSEP

Specifications

color: WhiteSource
size: 2' x 4'Source

Questions and answers

Is this a replacement for fiberglass or foam board insulation?: No. It is a radiant barrier that blocks heat transfer by reflection. It adds little conductive R-value, so it works alongside bulk insulation, not instead of it.
Can it be used on windows?: Yes. The reflective face blocks radiant heat, and the white vinyl side can face the room. It is opaque, so it darkens the window.
How is it installed?: The closed-cell foam holds staples without tearing, so it can be stapled to wood framing or rafters. Cut it with a utility knife or scissors.
Is it fire rated?: Yes. It is Class 1 / Class A fire rated and has passed ASTM E84 and ASTM E2599 testing.
Does it work in cold weather?: The aluminum face reflects radiant heat in both directions, so it can help keep heat in during winter. It still needs an air space to work as a radiant barrier.
Where is the Reflective White Foam Thermal Insulation Heat Shield Windows cheapest?: At Walmart, for $14.44, as of our latest check.