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DIY Reflective Insulation Sheet, Window Insulation Kit, Bubble Core Garage Door Insulation
INSULATION MARKETPLACE

DIY Reflective Insulation Sheet, Window Insulation Kit, Bubble Core Garage Door Insulation

4.4· 44 ratings

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$57.95at AmazonObserved at 3:43 PM

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Our take on the DIY Reflective Insulation Sheet, Window Insulation Kit, Bubble Core Garage Door Insulation

A single 24-inch by 10-foot roll of double-sided aluminum foil with a bubble core, sold by Insulation Marketplace. It reflects most radiant heat and is meant for windows, garage doors, attics and RVs. It is a cheap, cut-to-fit barrier, not a substitute for fiberglass or foam board. At $16.45 at eBay as of November 4, 2026, it is the lowest of the three new prices and a low-cost way to try one window or door.

Best forRenters covering single-pane windowsGarage doors that get sunRV and shed windowsQuick temporary fixes before winter
Pros
  • Cuts with scissors or a utility knife
  • Lightweight and easy to tape up
  • Foil on both faces reflects radiant heat
  • Adds privacy at windows
  • Low cost for a 10-foot roll
Cons
  • Bubble core has little R-value on its own
  • Bare foil shows and looks unfinished
  • Tape and edges can peel over time
  • No vapor barrier or fire rating stated
  • One 24-inch roll covers little area

DIY Reflective Insulation Sheet, Window Insulation Kit, Bubble Core Garage Door Insulation prices at every store

  • AmazonNew

    Availability unknown

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    $57.95Free shippingObserved at 3:43 PM
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Also available at

  • eBayCheck price at eBay
  • The Home DepotCheck price at The Home Depot
  • Insulation MarketPlaceCheck price at Insulation MarketPlace
  • WalmartCheck price at Walmart
  • WalmartCheck price at Walmart

DIY Reflective Insulation Sheet, Window Insulation Kit, Bubble Core Garage Door Insulation price history

Lowest price we've seen: $17.95 on Nov 4 at Amazon. Tracked across 4 stores since Nov 4.

What reviewers say

Buyers rate it 4.4 out of 5 from 44 ratings. Most use it for garage doors, windows and campers and find it easy to cut and install for the money.

Pros
  • Easy to cut and fit
  • Noticeable difference on hot garage doors
  • Good value for the price
Cons
  • Thin and flimsy
  • Needs tape to stay put
  • Smaller coverage than expected

About the DIY Reflective Insulation Sheet, Window Insulation Kit, Bubble Core Garage Door Insulation

Transform your space with the DIY Reflective Insulation Sheet, the ultimate solution for saving energy and reducing your carbon footprint. Precisely designed for high performance, it features a durable bubble core layered between reflective aluminum foil on both sides, effectively reducing heat transfer to keep your home cooler in summer and warmer in winter. With the ability to reflect an impressive 95-97% of radiant energy, this insulation ensures maximum thermal efficiency while enhancing indoor comfort. This versatile insulation sheet is lightweight, easy to cut, and adaptable to fit any window, door, or space, providing full privacy along with excellent thermal protection. Engineered to last for years, this durable insulation offers a cost-effective and eco-friendly way to reduce energy bills and improve efficiency. Perfect for homes, garages, RVs, and more, it’s the smart choice for creating a comfortable and sustainable living space.

Specifications

number_of_pieces
1Source
color
SilverSource
size
24" x 10ftSource
actual_color
SilverSource
Thermal Type
Blanket

Questions and answers

Is this worth it over foam board?
For blocking radiant heat and glare on a window or garage door, yes, and it is far cheaper. Foam board adds real conductive R-value, so use it if you need actual insulation.
How much area does one roll cover?
A 24-inch by 10-foot roll covers about 20 square feet. That is roughly two average windows or part of a single garage door.
Can I put it behind drywall or in an attic?
It can go in an attic as a radiant barrier, but it needs an air gap to work and should not be buried against insulation. Check local code before installing.
Does it block light and give privacy?
Yes. The foil is opaque, so a covered window blocks the view and daylight in both directions.
When is it cheapest?
Prices on this kind of roll move little, but fall weatherproofing sales and multi-roll listings tend to be the best times to buy. Compare all three stores before ordering.
Where is the DIY Reflective Insulation Sheet, Window Insulation Kit, Bubble Core Garage Door Insulation cheapest?
At Amazon, for $57.95, as of our latest check.
What do buyers say about the DIY Reflective Insulation Sheet, Window Insulation Kit, Bubble Core Garage Door Insulation?
Rated 4.4 out of 5 from 44 ratings.
Where can I buy the DIY Reflective Insulation Sheet, Window Insulation Kit, Bubble Core Garage Door Insulation?
5 stores we checked sell it, including Amazon, eBay, The Home Depot, Insulation MarketPlace, Walmart.

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Type
Reflective Type
Reflective Type
Radiant Barrier
Form
Rolls
Fire Rating Class
Class A, Class 1
Product Type
Insulation Roll
Insulation Type
Thermal
Insulated Plasterboard
No
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