I have a Stanley 2-car garage door. There are 4 sections: 21-inches, 21-inches, 21-inches, and 19-inches high (bottom to top). 191 inches wide.

I received a large box containing the insulation, double-sided tape, razor knife, and directions. The directions were at the bottom of the box, so dig for them.

The installation is a two-step process. On the first day, apply the double-sided tape to the various garage door panels. The directions say to wait 48 hours for the tape to adhere before proceeding with the insulation portion. I first cleaned all of the surfaces where the tape would go. The worst was the very bottom edge which was quite dirty. The tape went on fine and I had plenty left over. I used a continuous strip on the horizontal very top and very bottom, and partial strips on the remaining horizontal sections and all of the vertical sections.

But I had some things crop up, so I ended up waiting 8 weeks before I had a chance to install the insulation.

The box consisted of 4 long insulation panels that were wrapped around eachother. So I had to unfurl all of that in order to get to the first of the panels. Then I had to cut each panel to height (21,21,21,19 inches). Then remove the yellow side of the double-sided tape on the first garage-door panel, then apply the insulation, then trim that panel to width (around 191 inches; trimmed in-place). During this process, I also had to trim around each of the hinges on the panels, and work around the lock-wire that runs horizontally the full length of panel #2.

On the whole, I'm actually surprised that it turned out as well as it did -- it looks like the pictures. I'm handy, but this install had plenty of opportunity for mistakes. The biggest of which is trimming the panels to the right heights. I would have gladly paid more if they'd come pre-cut my heights.

On the whole I'm happy with the installation. The trick is to cut the panels' heights to the right size before installation, but trim the width after installation. It cuts fine with scissors; I didn't use the included razor knife. And I cut slots for the various hinges as I went along.

Likewise, remove the yellow tape backing as you go instead of removing it all at once. And peel back a small section of each tape; on the first attempt I tried to peel-as-you-go but that was a nightmare. For the remaining panels, I peeled back a couple of inches so that I could remove the remainder as I went when I was applying the insulation.

I'm not sure how well this is going to work, and it seems that it might make a nice nest for a creature (inside the cavity formed on the bottom panel) once they poke through there. Likewise, summer temperatures can reach 118 degrees here in the Summer, so I'll know how well it works in a couple more months.

Scott

I recently purchased the double-sided radiant barrier insulation for two garage doors, and I am absolutely thrilled with the results! This product has exceeded my expectations in every way possible, minus a little adhesion issue (possibly my fault, but was an easy fix).

Regardless, installation was a breeze, thanks to the clear and concise instructions provided. Instantly, I noticed a significant difference with the temperature inside my garage. It stays noticeably cooler in summer, and I'm eager to see the impact it will have on keeping the warmth in during the winter months.

The quality of the material is outstanding, and it's clear that this is a durable and long-lasting solution. The reflective surface is not only effective in insulating, but it also brightens up the space, creating a cozy environment overall.

What truly sets this purchase apart, however, is the phenomenal customer service I experienced. Mike was responsive to my inquiries and provided helpful, informative answers to all of my questions. He went above and beyond to ensure I had everything needed for a seamless installation process.

It's rare to come across a company that genuinely prioritizes customer satisfaction, but this one has certainly mastered it. I couldn't be happier with my purchase and the overall experience. This double-sided radiant barrier has transformed my garage, making it a comfortable, usable space year-round.

If you're considering insulating your garage door, look no further. This product and the outstanding customer service provided by this company are second to none. I've recommended it to neighbors and would highly recommend this to anyone looking to improve their garage's comfort and energy efficiency.

Tape is a little hard to work with. Would recommend a roll of silver ac duct tape to make better seal. however the temperature difference is incredible in my garage. Highly recommend. Seller provides Gorilla adhesive spray for those hard to stick spots. Went over and above.

The absolute best seller I've ever experienced on Amazon! Product is fantastic and the owner, Mike, is readily accessible to answer any questions. He even went so far as to send me a little extra tape that I needed! Mike, let me know if you branch out into other products as I'll for sure buy from you again!!!

My tape got a little melted over the summer as I had to wait to install the insulation. I called Mike and he answered the phone and sent me a new roll of double sided installation tape! Where else on Amazon will you get someone to leave their phone number and pick up the phone. Great!