Is the SmartSHIELD roll worth it?

It is a low-cost way to add a radiant and vapor barrier in attics, garages and crawl spaces. It will not replace bulk insulation where real R-value is needed.

What R-value does it actually deliver?

The listed R-value of up to 15.32 depends on installation with an air space facing the foil. Stuck flat against a surface, the foam alone adds very little.

How much area does one roll cover?

A 16 in x 50 ft roll covers about 66 square feet. Order extra for overlaps and seams.

Can it be used outdoors or in a bathroom?

It is water-resistant and works as a vapor barrier, so it suits crawl spaces and damp areas. Keep the foil face protected from direct weather and long sun exposure.

It carries a Class A / Class 1 fire rating and is listed as fire-resistant up to 215°F. Check local code for exposed foam in living spaces.

When is the price lowest?

At $54.95 at Walmart as of November 4, 2026, it sits at the low end for a 16 in x 50 ft reflective roll. Compare per square foot against larger rolls before buying several.

Where is the SmartSHIELD Plus XPE Foam + Glue 5mm cheapest?

At Walmart, for $54.95, as of our latest check.

Where can I buy the SmartSHIELD Plus XPE Foam + Glue 5mm?

3 stores we checked sell it, including Walmart, WoodArtSupply, eBay.

SmartSHIELD Plus XPE Foam + Glue 5mm

Best price now

$54.95at WalmartObserved at 3:05 PM

Compared across 2 stores. Prices are checked against each store and labelled with when.

Visit Walmart

SmartSHIELD Plus XPE Foam + Glue 5mm

Best price now

$54.95at WalmartObserved at 3:05 PM

Compared across 2 stores. Prices are checked against each store and labelled with when.

Visit Walmart

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Our take on the SmartSHIELD Plus XPE Foam + Glue 5mm

SmartSHIELD Plus is a reflective foam insulation roll with a foil face on one side and a white face on the other, sold in a 16 in x 50 ft roll. It works as a radiant barrier, vapor barrier and light sound barrier for attics, walls, floors and crawl spaces, and it is rated Class A / Class 1 fire resistant. The best new price is $54.95 at Walmart as of November 4, 2026, with three stores carrying it new.

Best forDIY attic and crawl space projectsGarage door and wall radiant barrierSheds and metal buildingsBuyers who want a vapor barrier and insulation in one roll

Pros

Foil face reflects radiant heat; white face brightens the space
Acts as vapor barrier and resists moisture and mold
Class A / Class 1 fire rating
Lightweight and easy to cut and install without special tools
16 in x 50 ft roll covers about 66 sq ft

Cons

Thin foam gives little true R-value on its own; the quoted R-value depends on air space
Not a substitute for batt or blown insulation in cold climates
Foil face can tear and edges can be sharp
Tape and seams must be sealed well to keep the vapor barrier intact

SmartSHIELD Plus XPE Foam + Glue 5mm prices at every store

WalmartNew
In stockSold by Insulation MarketPlace LLC
$54.95Free shippingObserved at 3:05 PM
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WoodArtSupplyNew
In stock
$84.85Free shippingObserved at 3:04 PM
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Also available at

eBayCheck price at eBay

SmartSHIELD Plus XPE Foam + Glue 5mm price history

Lowest price we've seen: $54.95 on Nov 4 at Walmart. Tracked across 2 stores since Nov 4.

About the SmartSHIELD Plus XPE Foam + Glue 5mm

Upgrade your home's insulation with the SmartSHIELD -5mm Reflective Insulation Roll. This high-quality insulation solution features a dual-layer design with a foam core and a radiant barrier to provide superior thermal resistance. The engineered foil on one side reflects heat away, while the white finish on the other side adds a clean look and enhances illuminative efficiency. Easy to install and perfect for a variety of applications, this roll can be used in attics, walls, floors, and crawl spaces to help reduce heating and cooling costs year-round. It's lightweight, durable, and safe to handle without the need for protective clothing or special tools. Enhance the energy efficiency of your property with this versatile and effective insulation product. Perfect for DIY projects and professional installations alike, SmartSHIELD is your go-to choice for improving comfort and lowering energy bills.

Specifications

Form: Rolls
Fire Rating Class: Class A, Class 1
Product Type: Insulation Roll
Insulation Type: Thermal
Insulated Plasterboard: No
Reflective Type: Foam Core, Reflective
Thermal Type: Radiation
Moisture Resistance: Waterproof
Mold Resistance: Resistant/Does't promote fungal growth
Thickness: 3 mm
Length: 50 ft
Roll Size: 24" x 50 ft
Width: 16 in
Material Type: Reflective Insulation, Commercial insulation rolls, Foam Core
Density: 34-54 Kg/m3 (FOAM DENSITY)
Vapor Retarder: Yes (acts as vapor barrier)
Application: Radiant barrier, Sound barrier, Vapor barrier
Recommended Usage: Commercial, Industrial, Residential
Suitable Surfaces: Various surfaces and structures
Installation Method: Easy Installation
R-Value: Up to 15.32
Thermal Resistance: 20.42 (ft2.h.°F/Btu) (*B)
color: Silver,White
size: 16"x50ft

Questions and answers

Is the SmartSHIELD roll worth it?: It is a low-cost way to add a radiant and vapor barrier in attics, garages and crawl spaces. It will not replace bulk insulation where real R-value is needed.
What R-value does it actually deliver?: The listed R-value of up to 15.32 depends on installation with an air space facing the foil. Stuck flat against a surface, the foam alone adds very little.
How much area does one roll cover?: A 16 in x 50 ft roll covers about 66 square feet. Order extra for overlaps and seams.
Can it be used outdoors or in a bathroom?: It is water-resistant and works as a vapor barrier, so it suits crawl spaces and damp areas. Keep the foil face protected from direct weather and long sun exposure.
Is it fire safe?: It carries a Class A / Class 1 fire rating and is listed as fire-resistant up to 215°F. Check local code for exposed foam in living spaces.
When is the price lowest?: At $54.95 at Walmart as of November 4, 2026, it sits at the low end for a 16 in x 50 ft reflective roll. Compare per square foot against larger rolls before buying several.
Where is the SmartSHIELD Plus XPE Foam + Glue 5mm cheapest?: At Walmart, for $54.95, as of our latest check.
Where can I buy the SmartSHIELD Plus XPE Foam + Glue 5mm?: 3 stores we checked sell it, including Walmart, WoodArtSupply, eBay.