Black FridayDealsBuying guidesBrandsStoresTermsPrivacydeal.ai apps

© Deal.ai Inc.

Deal.ai › SmartSHIELD
SmartSHIELD
SmartSHIELD 5mm Reflective Foam Insulation Roll - Foil / Foil

SmartSHIELD 5mm Reflective Foam Insulation Roll - Foil / Foil

4.8· 587 ratings

Best price now

$47.95at Insulation MarketPlaceVerified

20% under what the other stores charge

Compared across 5 stores. Prices are checked against each store and labelled with when.

Visit Insulation MarketPlace

Ask our agent about this product

It checks today's price at every store, compares the alternatives and answers in about a minute.

Enter to send, Shift+Enter for a new line

Our take on the SmartSHIELD 5mm Reflective Foam Insulation Roll - Foil / Foil

SmartSHIELD is a foil-faced closed-cell foam roll used as a radiant barrier, vapor barrier and light sound barrier for walls, roofs, garages and sheds. It comes in many widths and lengths, and this 16-inch by 50-foot roll is the mid-size option. The foil surface reflects radiant heat rather than slowing conductive heat like fiberglass batts. At $54.95 at Walmart as of November 4, 2026, it is the cheapest new price among 4 stores listing it.

Best forGarage doors and attic raftersSheds and metal buildingsBasement and crawlspace vapor barrierDIY radiant barrier over existing insulation
Pros
  • Foil on both faces reflects radiant heat and resists moisture
  • Closed-cell foam does not soak up water or feed mold
  • Class A / Class 1 fire rating
  • Cuts with a utility knife and installs with staples or tape
  • Works as a vapor barrier and a light sound barrier
Cons
  • Thin foam adds little conductive R-value on its own
  • The quoted R-value of up to 15.32 depends on air space and installation
  • Foil tears and creases easily during handling
  • Needs foil tape at seams to keep the vapor barrier intact

SmartSHIELD 5mm Reflective Foam Insulation Roll - Foil / Foil prices at every store

  • Insulation MarketPlaceNew

    In stockReturn policy

    $47.95Verified
    Visit store
  • WalmartNew

    In stockSold by Insulation MarketPlace LLC

    $54.95Free shippingObserved at 3:36 PM
    Visit store
  • eBayNew

    In stockSold by insulationmarketplace

    $59.95Free shippingObserved at 3:04 PM
    Visit store
  • WoodArtSupplyNew

    In stock

    $84.85Free shippingObserved at 3:36 PM
    Visit store
  • AmazonNew

    Availability unknown

    As an Amazon Associate, Deal.ai earns from qualifying purchases.

    $84.95Free shippingObserved at 3:05 PM
    Visit store

Also available at

  • Insulation MarketPlaceCheck price at Insulation MarketPlace

SmartSHIELD 5mm Reflective Foam Insulation Roll - Foil / Foil price history

Lowest price we've seen: $54.95 on Nov 4 at Walmart. Tracked across 5 stores since Nov 4.

What reviewers say

Buyers rate it 4.8 out of 5 from 587 ratings, mostly for easy cutting, clean installation and noticeable heat reduction on garage doors and in attics. Complaints center on the thin foam and foil that dents or tears.

Pros
  • Easy to cut and fit
  • Cuts radiant heat on garage doors and attics
  • Holds up in damp areas
  • Good value for the roll size
Cons
  • Foil creases and tears
  • Thin foam, so modest R-value alone
  • Seams need tape to seal properly

From Insulation MarketPlace

  • Double-sided reflective foil reflects up to 95% of radiant heat
  • 5mm closed-cell polyethylene foam core limits conductive and convective heat flow
  • Blocks heat in summer and retains warmth in winter to reduce energy costs
  • Lightweight and flexible; cuts with basic tools and secures with staples, adhesive or tape
  • Waterproof, mold-resistant and non-toxic; safe for indoor use
  • Meets ASTM E-84 with flame index 0 and smoke development rating 15
Sizes
16" x 10ft, 16" x 25ft, 16" x 50ft, 24" x 10ft, 24" x 25ft, 24" x 50ft, 48" x 10ft, 48" x 25ft, 48" x 50ft, 48" x 100ft, 60" x 50ft, 72" x 50ft
Materials
Double-layered engineered foil bonded to a 5mm closed-cell polyethylene foam core
Sizing
One reviewer found the 48" width measures about 47 5/8", so it fit less snugly than expected
Guarantee
60-day money-back guarantee; 10 years warranty
Returns
60 days money back
Shipping
Same day FREE shipping
In the box
Comes in a compact roll for easy handling

About the SmartSHIELD 5mm Reflective Foam Insulation Roll - Foil / Foil

Available Sizes

SmartSHIELD comes in a variety of dimensions to suit different insulation needs, making it a convenient choice for anyone looking for foam insulation rolls :

• 16" x 10ft, 16" x 25ft, 16" x 50ft,

• 24" x 10ft, 24" x 25ft, 24" x 50ft,

• 48" x 10ft, 48" x 25ft, 48" x 50ft, 48" x 100ft,

• 60" x 50ft,

• 72" x 50ft.

TECHNICAL SPECIFICATIONS - SmartSHIELD-5mm / EN5

SmartSHIELD Insulation Measures and Tolerances of the Standard Product

Thickness: 5 mm

Technical Characteristics of the Product

Characteristics

Value

Standard

FOAM CELL STRUCTURE

Closed

-

AVERAGE WEIGHT PER m2

0,242 Kg/m2

-

FOAM DENSITY

34-54 Kg/m3

ASTM 1622

PERMEABILITY

What buyers say

Buyers like
  • Easy to work with and install
  • Great customer service
  • Cut to fit van windows and tucked into the window channel perfectly
  • Helps keep the inside cooler in summer and warmer in winter
  • Easy installation process
Buyers complain about
  • Width slightly off: 48" roll measures about 47 5/8", so fit was not as snug as expected

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

Questions and answers

Is this worth it over fiberglass batts?
For blocking radiant heat and moisture in a garage, attic or shed, yes. For filling a cold wall cavity, fiberglass or mineral wool batts insulate better per inch.
What R-value does it really give?
SmartSHIELD lists up to R-15.32, but that figure assumes a reflective air space on at least one side. Installed flat against a surface, the added R-value is much lower.
Can it go on a garage door?
Yes. The 16-inch width fits most paneled garage doors, and the foil faces reflect heat. Tape the seams and leave the door hardware clear.
Does it work as a vapor barrier?
Yes, the foil facing acts as a vapor retarder. Seal seams with foil tape and put the foil side toward the warm, moist side of the assembly.
What sizes are available?
Rolls come in 16, 24, 48, 60 and 72-inch widths and in 10, 25, 50 and 100-foot lengths, so you can match the width to your stud or rafter spacing.
When is the price lowest?
Prices move with seasonal demand, often dipping outside peak summer and fall insulation season. Compare the 4 stores listing it before buying.
Where is the SmartSHIELD 5mm Reflective Foam Insulation Roll - Foil / Foil cheapest?
At Insulation MarketPlace, for $47.95, 20% under what the other stores charge, as of our latest check.
What do buyers say about the SmartSHIELD 5mm Reflective Foam Insulation Roll - Foil / Foil?
Rated 4.8 out of 5 from 587 ratings. Buyers like: Easy to work with and install; Great customer service; Cut to fit van windows and tucked into the window channel perfectly. Common complaints: Width slightly off: 48" roll measures about 47 5/8", so fit was not as snug as expected.
Where can I buy the SmartSHIELD 5mm Reflective Foam Insulation Roll - Foil / Foil?
5 stores we checked sell it, including Insulation MarketPlace, Walmart, WoodArtSupply, Amazon, eBay.

Shoppers also compared

  • A
    Adhesive Foam Padding Closed Cell Neoprene Foam Sheet, 1/4" x 12" x 59"
    Adhesive Foam Padding Closed Cell Neoprene Foam Sheet, 1/4" x 12" x 59"
  • X
    XCEL Foam Roll with Self Adhesive
    XCEL Foam Roll with Self Adhesive
  • C
    CF Rubber Foam Insulation Sheet with Self Adhesive
    CF Rubber Foam Insulation Sheet with Self Adhesive
  • X
    XCEL Marine Foam Roll with Self Adhesive
    XCEL Marine Foam Roll with Self Adhesive
  • 1
    10PCS 1mm Thick Adhesive Foam Sheet 8.3x11.8 Insulation Foam for DIY handcrafting
    10PCS 1mm Thick Adhesive Foam Sheet 8.3x11.8 Insulation Foam for DIY handcrafting
  • A
    Adhesive Foam Padding Roll Closed Cell Sponge Neoprene Insulation Board Foam Sheet Pad with Sticky Back for Anti Vibration, Anti-Slip, DIY Crafts, Gaskets, Cosplay, Costume (Black, 12x59x3/4 inch)
    Adhesive Foam Padding Roll Closed Cell Sponge Neoprene Insulation Board Foam Sheet Pad with Sticky Back for Anti Vibration, Anti-Slip, DIY Crafts, Gaskets, Cosplay, Costume (Black, 12x59x3/4 inch)
  • W
    Wave Acoustic Foam Soundproofing Mat Self-Adhesive Black Eggcrate Insulation 20mm
    Wave Acoustic Foam Soundproofing Mat Self-Adhesive Black Eggcrate Insulation 20mm
  • S
    Self Adhesive Cell Foam Sheets (12"L x 8"W x 1/8"T, 5 Pcs)
    Self Adhesive Cell Foam Sheets (12"L x 8"W x 1/8"T, 5 Pcs)

More from SmartSHIELD

  • S
    SmartSHIELD Plus XPE Foam + Glue 5mm
    SmartSHIELD Plus XPE Foam + Glue 5mm
  • S
    SmartSHIELD Reflective Foam Core Insulation Roll
    SmartSHIELD Reflective Foam Core Insulation Roll
All SmartSHIELD deals and products →
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)
Operating Temp Range
-20°c / 80°c
Sound Absorption
Yes (acts as sound barrier)