Garage Door Insulation Kit, Reflective, 8x8 Single Door

Easy light weight heat/cold barrier for Clopay metal garage door in Florida. I bought two boxes to cover my two car garage door. I was concerned about the heat and cold that is in the garage in summer and in winter here in Fort Myers Florida. I was very concerned about stressing my garage door opener with added weight on the door. These panels are light weight and do the job. I can tell you that I get really sweaty in the summer and my fingers get stiff from cold in the winter when I work in my garage shop. The Reach Barrier kit arrived within a few days. I used one morning to measure and cut all panels (21' x 24'). I placed the panels in each section of my two car garage door. I was easy to fold and slide each panel into place. That took about two hours for me, a guy who is 81 years young! Next day the easy part of peeling sticky squares (one of my FAVORITE tasks LOL), to place the squares on the door, then press the panel onto each sticky. I put two at the top of a panel at each side and pressed. Then one sticky at the bottom middle of each panel. You can see how each panel had cross members on the garage door. The insulation was tough and could be maneuverd to do the sticky squares with no problems. Rubbing alcohol was easy to prep for sticky placement. Please bear with me and stick it out on this review. You will be happy if your garage faces East or West. I measured the temperatures 12 hours after final installation. I took readings from inside and outside of my home. I am attaching photos. #1 = outside temp is 42.6 F at 1:30 AM. #2 = my home inside thermostat is 74 degrees F. #3 = inside my home in a room closest to the garage is 72.4 F. I placed a sensor in the middle garage that read 66.0 F. I can walk barefoot in the garage at 1:30 AM! I placed a hand one the door in the afternoon sun and felt heat...then placed my hand on the installed barrier...there was a NOTICABLE temperature difference. I highly recommend this company and product. I wish that I had installed the panels four years ago when I bought this home! I plan on adding a follow-up temperature comparison this coming summer, when garage tempertures are easily 20 degrees higher that outside afternoon sun!

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!.

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.

Just installed this kit a few days ago. Installation was very easy. Hardest part was cleaning the door beforehand. First impression was this has to be a joke. So far I’m pretty happy with the results. Garage door faces east and gets direct sunlight all morning. Already feeling a difference in the garage!

This product has made a huge difference in the temperature control of my garage. I was skeptical about it when I ordered, but it immediately regulated the temperature in my garage. It was a really cold winter and before I installed it the garage was practically the outdoor temp. Afterward, it maintained very comfortable temps in the cold. Anxious to see what it will do in the summer heat. Well worth the money, even if it only keeps out the cold, but I think it will retain cool air too. I had to cut the panels by a couple inches, but super easy install.

Easy to install. Took the time to install under hinges and brackets to add air gab for increased efficiency. Noticeable improvement in temperature.

I just got this stuff today and so far have installed one out of two boxes of this for my double car garage. It's not been a terribly hot day, but it definitely feels like it helps. However, there are multiple videos of someone using a digital infrared thermometer (sort of shaped like a gun that you point at surfaces to measure surface temperature) to compare 'before' and 'after' temperatures of the inside of a garage door after installing some of this stuff. Note that to properly use such a device you have to enter an EMS or emissivity value based on the particular surface that you're aiming at --- and these can be quite different. My garage door is a painted sheet of steel, a sort of semi-gloss white paint on it. I estimate the proper EMS value to adjust by is 0.87. But for the very shiny reflective insulation in this kit, the EMS adjustment should be in the 0.03 to 0.05 range --- very different from the painted metal of my garage door. Without adjusting the EMS for each surface, the comparative numbers shown in those videos isn't something I would put much stock in. When I get some decently hot weather with ideally the sun shining right on my garage door, I'll take some readings and if I remember I'll put the data I get from that as an update to this review. I don't mean to imply anything bad about the product with this comment, just --- FYI about any digital infrared thermometer comparisons that don't mention EMS adjustments. ====================================== Update, July 27th 2025: My infrared digital thermometer 'gun' allows the emmisivity value to go as low as 0.1 but no lower. I was unable to get a consistent reading on the very shiny surface of this insulation with that 'gun', however, and reading about this it appears that one just can't get a reliable reading with something this shiny. I have an "indoor/outdoor" thermometer, where the 'outdoor' part is a wire that terminates in a thermometer sensor. I taped this sensor directly to the uninsulated garage door and then again to an adjacent insulated portion. I'm having trouble getting a true apples-to-apples comparison as wispy clouds move across the sun while I'm allowing the thermometer several minutes to adjust to the current surface, but today it seemed like I got about a 4 degree delta --- much lower than I had been expecting from looking at marketing materials and other user reviews. I will test again tomorrow, hoping for optimal conditions to be really confident, but for now am lowering my rating to 3 stars accordingly. I asked an AI for feedback on this, and it opined that 4 degrees isn't unrealistic given the relatively thin amount of insulation, and that the installation instructions shows taping this directly against the metal, i.e., no air gap in between. It would not be easy to achieve much of an air gap, and I wanted it taped solid (so it wouldn't fall off or sag over time), so I added additional double-sided tape rated for high heat applications. If I had instead got some relatively thin rigid insulation I could perhaps tape spacers in between, and maybe should have tried this for this product too, but I didn't, and having followed the instructions I'm not going to rip it all out and install it again in hopes of a slight improvement (!). If on further testing I can show a reading significantly better than 4 degrees (fahrenheit) I'll update this review again, else --- I suggest that you don't expect a major improvement from this product if installed right against the metal garage surface per the instructions. ===================================================== Final update: I had a clear sunny day today and measured again by taping my sensor directly to each of the surfaces, waiting about 15 minutes each time for the thermometer to adjust. This time I got an 8 degree difference --- 77F outdoors in the shade, 100F on the inside of the garage at a metal door panel not yet insulated, and 92F at an adjacent panel that was insulated. 8 degrees fahrenheit significant, one can definitely feel a temperature delta of that amount, but based on reading manufacturer's marketing info and reading customer reviews and watching review videos it's a disappointing difference. To be clear, I think that the product is fine insofar as the buyer really knows what they're getting and has their expectations tuned to reality. And admittedly the manufacturer isn't responsible for multiple reviews using those 'heat gun' type of infrared thermometers where they don't adjust for emissivity nor factor in the inconsistency of the highly reflective material on the outside. But still, based on what I saw from the sales info, I expected something like twice the temperature reduction (summer conditions) than I actually got.

This was referred to me by a friend and I’m so glad he did. Very, very easy to install and I can feel the difference and see it in my electric bill. Winter or summer it makes the garage less cold or less hot as needed.

Why sell a garage door insullation kit for only part of an average garage door? Does not make sense. Deceptive.

Worked perfectly and easy to cut and install. Was worried about adding too much weight to the garage door with other types of insulation and this lighter version of insulation did the trick

Very easy installation. Gives it a clean finish. One thing I will say is I suggest getting more of the stickems or using an adhesive spray when installing. The provided stickems did not do a good enough job keeping the insulation panels in place.

Insulate garage door

Did the job while we were waiting for new door