---
product_id: 15705908
title: "Reach Barrier Garage Door Insulation Kit, Reflective, 8x8 Single Door"
brand: "reach barrier"
price: "¥40092"
currency: JPY
in_stock: true
reviews_count: 13
category: "Reach Barrier"
url: https://www.desertcart.jp/products/15705908-reach-barrier-garage-door-insulation-kit-reflective-8x8-single-door
store_origin: JP
region: Japan
---

# 8x8 ft single door coverage Reflective radiant heat control 8 pre-cut panels for easy DIY Reach Barrier Garage Door Insulation Kit, Reflective, 8x8 Single Door

**Brand:** reach barrier
**Price:** ¥40092
**Availability:** ✅ In Stock

## Summary

> 🚪✨ Insulate your garage like a pro—comfort and energy savings at your fingertips!

## Quick Answers

- **What is this?** Reach Barrier Garage Door Insulation Kit, Reflective, 8x8 Single Door by reach barrier
- **How much does it cost?** ¥40092 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/15705908-reach-barrier-garage-door-insulation-kit-reflective-8x8-single-door)

## Best For

- reach barrier enthusiasts

## Why This Product

- Trusted reach barrier brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Customizable Comfort:** Panels trim easily with scissors or a box knife to fit any garage door design perfectly.
- • **Stay Cool, Save Energy:** Reflective dual-sided film reduces radiant heat transfer, keeping your garage up to 10°F cooler on scorching days.
- • **Precision Fit, Zero Hassle:** Pre-cut 24"x48" panels with adhesive pads make installation a breeze—no special tools needed.
- • **Built to Last in Any Climate:** Durable polyethylene with bubble layers maintains insulation integrity in extreme heat and humidity.
- • **DIY Friendly with Secure Hold:** High-temp polyurethane foam adhesive pads ensure panels stay firmly in place without damaging your door.

## Overview

The Reach Barrier Garage Door Insulation Kit covers a standard 8x8 ft single garage door with 8 pre-cut, reflective polyethylene panels featuring dual bubble layers for superior radiant heat control. Designed for easy DIY installation using high-temperature adhesive pads, it reduces garage temperatures by up to 10°F, enhances energy efficiency, and withstands extreme weather conditions, making your garage a more comfortable and functional space year-round.

## Description

Product Description Reach Barrier 3009 Garage Door Insulation Kit. From the Manufacturer Reach Barrier 3009 Garage Door Insulation Kit.

Review: Easy DIY and What a difference in garage temperature! - 3 year update: I never would have guessed, but I've absolutely appreciated what a HUGE difference these insulation panels make in maintaining the temperature in my garage during freezing winter temps as well as 100+ degree summer temps. They consistently keep the garage temps 20 degrees closer to a comfortable 70 degrees than the outside temps, no matter which way the thermometer is reading. I've gotten to where I recommend them yearly to the ppl in my community every time we have an uncomfortable swing in temperature, and some even bother to come back and say "thanks!" ====== After having to use my garbage cans, plexiglass, carboard, and an old sleeping bag to basically tent the wall adjacent to the main water line coming into the house, then a space heater blasting on that drywall to try keep the line thawed during Winter Storm Uri last year, I decided this year that this was happening! Living in the Deep South, DIY garage door insulation kits have been hard to find at big box stores, which is why I haven't done this before. This year I was doing my Black Friday shopping online and this kit came up my search. I compared it to several others, read the reviews, decided that for the sale price, it was absolutely worth a shot. I also bought some heavy duty double-sided tape I like after reading about others' disappointments with the velcro attachments that come with the kit. The installation of this was super simple. I read the instructions, then decided to install it a bit differently because I wanted to maximize the air gap between the garage door and these insulating panels. These panels are about 2" too tall and 1" too wide for my garage door panels, so I folded the excess down, creating a U-shape on the top for extra support for the gap, and an L-shape on the side so I could secure this insulation to the interior side of metal brackets that hold the garage door together. I ended up only using 2 small squares of double sided tape per panel to attach it on opposing diagonals. Now that I know it works well, I'll be going back and securing it in more places to make the garage door look better. It took me about 2 hours because I kept experimenting with the installation to get as much air gap as possible while keeping the insulation securely in place. I'm super pleased with this product, and considering getting some more to insulate the attic ceiling this summer. Today was the first day to really test how these perform. It in the low 30s today when I took this picture of my car's thermometer.
Review: Noticeable Difference in Garage Temp with Insulation Installed - I looked at the published R-values of this product and NASA Tech. They are both broadly listed as R-21. There are better insulating products available usually of the fiberglass batt type but these can be "dirty" and difficult products to install. The NASA Tech originally looked like the best bet but to install it, I would have had to remove the hurricane straps (5 of them), unroll the NASA Tech, marking the holes where the hurricane straps were bolted and reinstall the hurricane straps and bolts. Not a small job. I elected to purchase Reach Barrier becasue of the pre-cut panels. First, one box covers a single car garage door. For my project I needed two boxes for a 7'h X 16'w door. Second, each panel in the Reach Barrier Kit is 24" X 48". There's enough product to do 16, 24" X 24" panels per box Third, not every panel on my garage door (an Amarr Product) is the same size. The outside panels (closest to the roller tracks) are 25" wide, 21" high. The others are all 23"w X 21"h. Each panel had to be trimmed from the stock panels in the kit. I started the project by myself by marking the dimensions with a marker, labeled the L corner and top of each trimmed panel and would trim the stock panels to size using a long straight edge (a level) and box cutter. The panels trim neatly and easily with a box cutter. I switched to one person cutting (my wife) and the other (me) installing it - that saved a lot of getting up and down from one's knees. The first 4 or so panels cut and installed solo were slow going; it took about 10-15 minutes each panel to trim and install it. Going slow like this with one person doing the cutting and installing would take almost 3h to do one half of this project, 6h total. Too long. Get the wife, save my knees! Once we got a system going we did the other 28 panels in about 90 minutes. They advantage of the Reach Barrier product over the NASA tech is that I was able to install the cut panels without removing the hurricane straps. If you look closely at the photos of the completed garage door, you may note that the hurricane straps will actually hold some of the panels in place (there is enough space between the aluminum panels and the hurricane straps to easily work the cut panels under them). I started out using the stickies per the instructions. The problem with that was installing the stickies on the panel, removing the top covering of each of them then trying to slide a panel under a hurricane strap without the panel sticking to them until in place. After screwing up one panel that way I stopped putting the stickies on all four corners and in the middle. Instead I started cutting the panels 1/4 " longer in each dimension. Voi-la. They fit snuggly in place (mostly). If there was a saggy corner, I'd put a sticky under it by rolling the corner back, placing the sticky then unrolling the corner onto the sticky. That was only required on a couple of panels. The design of the door made it possible to jab that 1/4" extra of material in a grove and it stayed in that grove even with the door operating multiple times to test this technique. I imagine that wouldn't work on some door designs with or without Hurricane straps and you'd have to use the sticky is The important thing for DIY'ers is that you can easily install this product successfully even when leaving horizontal hurricane straps on the door. As for performance, I'm impressed so far. My garage door faces west and in the afternoon the door gets blazing hot - likely over 110 degrees. The garage is uninhabitable in the heat of the day with inside garage temps reaching 102 - 103 and it is presently serving as a storage area for heat sensitive things. I'd estimate that the insulation alone drops the ambient temperature inside the garage 8-10 degrees in the heat of the day with full sun on the door. Low 90s is still uncomfortable. My garage is about 450 SqFt. I just installed a 10000 BTU portable room AC that ducts (intake and exhaust) out the garage window. With it set at 80 degrees, it has no problem getting the ambient temp down to just under 80 degrees - comfortable for us. In the heat of the FL sun, the combo of a portable AC and the garage door insulated with the Reach Barrier product makes the garage a useable space. All I need now is a solar shade for the 48" X 48" window that I noted today leaks a lot of radiant heat now that the garage door isn't doing that!.

## Features

- SINGLE DOOR COVERAGE (8ft x 8ft): Designed to insulate one standard single garage door. For double-wide or two-car garage doors, purchase two kits for full coverage.
- KIT COMES WITH 8 PRE-CUT PANELS: Each panel measures 24"x48" and includes 48 one-inch square adhesive pads. Each panel is 5/32 inch thick and has reflective film on both sides, with 2 layers of bubble between the layers.
- RADIANT HEAT CONTROL: Reflective air insulation reduces radiant heat transfer for more consistent garage temperatures. Durable in extreme conditions, engineered to perform in high heat and humidity while maintaining insulation integrity over time.
- COMPLETE DO-IT-YOURSELF KIT: Installation requires no special tools. Panels can be trimmed with scissors or a box knife. Make sure door surfaces are free of dirt, moisture, and oil before applying the adhesive squares.
- HIGH-TEMPERATURE ADHESIVE PADS: Open-cell polyurethane foam pads are 1/8 inch thick with double-sided acrylic adhesive that conforms to multiple surfaces for secure attachment.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0058W5M08 |
| Best Sellers Rank | #9,351 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #55 in Weather Stripping |
| Brand | Reach Barrier |
| Brand Name | Reach Barrier |
| Coverage | 64 Sq Ft |
| Customer Reviews | 4.3 out of 5 stars 4,776 Reviews |
| Global Trade Identification Number | 00853455003009 |
| Included Components | 8 panels, 1 pack of Stickems and instruction sheet |
| Item Dimensions L x W | 24"L x 48"W |
| Item Thickness | 0.16 inches |
| Item Type Name | Garage Door Insulation |
| Item Weight | 3.3 pounds |
| Manufacturer | Reach Barrier |
| Manufacturer Part Number | 3009 |
| Material | Polyethylene (PE) |
| Material Type | Polyethylene (PE) |
| Model Number | 3009 |
| Number of Items | 1 |
| Number of Packs | 1 |
| Product Dimensions | 24"L x 48"W |
| Recommended Uses For Product | Door |
| UPC | 853455003009 |
| Unit Count | 1 Count |

## Product Details

- **Brand:** Reach Barrier
- **Item Thickness:** 0.16 inches
- **Material:** Polyethylene (PE)
- **Product Dimensions:** 24"L x 48"W
- **Recommended Uses For Product:** Door

## Images

![Reach Barrier Garage Door Insulation Kit, Reflective, 8x8 Single Door - Image 1](https://m.media-amazon.com/images/I/81YSdd50W3L.jpg)
![Reach Barrier Garage Door Insulation Kit, Reflective, 8x8 Single Door - Image 2](https://m.media-amazon.com/images/I/81bJO0anMjL.jpg)
![Reach Barrier Garage Door Insulation Kit, Reflective, 8x8 Single Door - Image 3](https://m.media-amazon.com/images/I/81tuH03aqtL.jpg)
![Reach Barrier Garage Door Insulation Kit, Reflective, 8x8 Single Door - Image 4](https://m.media-amazon.com/images/I/81taigxdI6L.jpg)
![Reach Barrier Garage Door Insulation Kit, Reflective, 8x8 Single Door - Image 5](https://m.media-amazon.com/images/I/81JxhqKn4UL.jpg)

## Available Options

This product comes in different **Size** options.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Easy DIY and What a difference in garage temperature!
*by T***T on January 20, 2022*

3 year update: I never would have guessed, but I've absolutely appreciated what a HUGE difference these insulation panels make in maintaining the temperature in my garage during freezing winter temps as well as 100+ degree summer temps. They consistently keep the garage temps 20 degrees closer to a comfortable 70 degrees than the outside temps, no matter which way the thermometer is reading. I've gotten to where I recommend them yearly to the ppl in my community every time we have an uncomfortable swing in temperature, and some even bother to come back and say "thanks!" ====== After having to use my garbage cans, plexiglass, carboard, and an old sleeping bag to basically tent the wall adjacent to the main water line coming into the house, then a space heater blasting on that drywall to try keep the line thawed during Winter Storm Uri last year, I decided this year that this was happening! Living in the Deep South, DIY garage door insulation kits have been hard to find at big box stores, which is why I haven't done this before. This year I was doing my Black Friday shopping online and this kit came up my search. I compared it to several others, read the reviews, decided that for the sale price, it was absolutely worth a shot. I also bought some heavy duty double-sided tape I like after reading about others' disappointments with the velcro attachments that come with the kit. The installation of this was super simple. I read the instructions, then decided to install it a bit differently because I wanted to maximize the air gap between the garage door and these insulating panels. These panels are about 2" too tall and 1" too wide for my garage door panels, so I folded the excess down, creating a U-shape on the top for extra support for the gap, and an L-shape on the side so I could secure this insulation to the interior side of metal brackets that hold the garage door together. I ended up only using 2 small squares of double sided tape per panel to attach it on opposing diagonals. Now that I know it works well, I'll be going back and securing it in more places to make the garage door look better. It took me about 2 hours because I kept experimenting with the installation to get as much air gap as possible while keeping the insulation securely in place. I'm super pleased with this product, and considering getting some more to insulate the attic ceiling this summer. Today was the first day to really test how these perform. It in the low 30s today when I took this picture of my car's thermometer.

### ⭐⭐⭐⭐⭐ Noticeable Difference in Garage Temp with Insulation Installed
*by J***N on June 2, 2022*

I looked at the published R-values of this product and NASA Tech. They are both broadly listed as R-21. There are better insulating products available usually of the fiberglass batt type but these can be "dirty" and difficult products to install. The NASA Tech originally looked like the best bet but to install it, I would have had to remove the hurricane straps (5 of them), unroll the NASA Tech, marking the holes where the hurricane straps were bolted and reinstall the hurricane straps and bolts. Not a small job. I elected to purchase Reach Barrier becasue of the pre-cut panels. First, one box covers a single car garage door. For my project I needed two boxes for a 7'h X 16'w door. Second, each panel in the Reach Barrier Kit is 24" X 48". There's enough product to do 16, 24" X 24" panels per box Third, not every panel on my garage door (an Amarr Product) is the same size. The outside panels (closest to the roller tracks) are 25" wide, 21" high. The others are all 23"w X 21"h. Each panel had to be trimmed from the stock panels in the kit. I started the project by myself by marking the dimensions with a marker, labeled the L corner and top of each trimmed panel and would trim the stock panels to size using a long straight edge (a level) and box cutter. The panels trim neatly and easily with a box cutter. I switched to one person cutting (my wife) and the other (me) installing it - that saved a lot of getting up and down from one's knees. The first 4 or so panels cut and installed solo were slow going; it took about 10-15 minutes each panel to trim and install it. Going slow like this with one person doing the cutting and installing would take almost 3h to do one half of this project, 6h total. Too long. Get the wife, save my knees! Once we got a system going we did the other 28 panels in about 90 minutes. They advantage of the Reach Barrier product over the NASA tech is that I was able to install the cut panels without removing the hurricane straps. If you look closely at the photos of the completed garage door, you may note that the hurricane straps will actually hold some of the panels in place (there is enough space between the aluminum panels and the hurricane straps to easily work the cut panels under them). I started out using the stickies per the instructions. The problem with that was installing the stickies on the panel, removing the top covering of each of them then trying to slide a panel under a hurricane strap without the panel sticking to them until in place. After screwing up one panel that way I stopped putting the stickies on all four corners and in the middle. Instead I started cutting the panels 1/4 " longer in each dimension. Voi-la. They fit snuggly in place (mostly). If there was a saggy corner, I'd put a sticky under it by rolling the corner back, placing the sticky then unrolling the corner onto the sticky. That was only required on a couple of panels. The design of the door made it possible to jab that 1/4" extra of material in a grove and it stayed in that grove even with the door operating multiple times to test this technique. I imagine that wouldn't work on some door designs with or without Hurricane straps and you'd have to use the sticky is The important thing for DIY'ers is that you can easily install this product successfully even when leaving horizontal hurricane straps on the door. As for performance, I'm impressed so far. My garage door faces west and in the afternoon the door gets blazing hot - likely over 110 degrees. The garage is uninhabitable in the heat of the day with inside garage temps reaching 102 - 103 and it is presently serving as a storage area for heat sensitive things. I'd estimate that the insulation alone drops the ambient temperature inside the garage 8-10 degrees in the heat of the day with full sun on the door. Low 90s is still uncomfortable. My garage is about 450 SqFt. I just installed a 10000 BTU portable room AC that ducts (intake and exhaust) out the garage window. With it set at 80 degrees, it has no problem getting the ambient temp down to just under 80 degrees - comfortable for us. In the heat of the FL sun, the combo of a portable AC and the garage door insulated with the Reach Barrier product makes the garage a useable space. All I need now is a solar shade for the 48" X 48" window that I noted today leaks a lot of radiant heat now that the garage door isn't doing that!.

### ⭐⭐⭐⭐ Easy to install
*by T***M on February 28, 2026*

Great product. Worked well to insulate our garage, as well as keep the rooms above warmer. If you have windows on your garage, the silver material will show though. We didn’t think about that until we had already installed it. We have a 2 car garage and we needed 2 boxes.

## Frequently Bought Together

- Reach Barrier 3009 Garage Door Insulation Kit, Silver, Easy Assembly, Adhesive Pads Included, Lightweight, Includes 8 Bubble Insulation Panels, Blocks up to 95% of Radiant Heat, Saves Energy
- Reach Barrier 3443 Stick'ems Adhesive Tape Squares, White, Includes 48 Pre-Cut, 1-inch Squares, Damage-Free, Ready to Use
- Aluminum Foil Tape, 2 inch x 65 Feet (3.9 mil), Insulation Adhesive Metal High Temperature Heavy Duty HVAC Tape, Silver for Ductwork, Dryer Vent, HVAC

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*Product available on Desertcart Japan*
*Store origin: JP*
*Last updated: 2026-09-06*