Hey everyone, it’s Jake here, and if you’ve been around the honeycomb panel space for even a minute, you’ve probably heard this question a hundred times: “Do these things actually insulate well, or are they just overpriced gimmicks?” As someone who’s been supplying honeycomb panels for 8 years now—working with everyone from tiny custom cabinet makers to big aerospace and construction firms—I get why people are skeptical. When I first started out, I thought they were just fancy corrugated sheets with a fun shape, too. Spoiler: I was so wrong. Today, let’s break down if honeycomb panels actually have good insulation properties, straight from the supplier who’s tested, installed, and troubleshooted more of these than I can count. Honeycomb Panel
First, let’s cut through the hype and the confusion. A lot of people mix up structural panels with insulation materials, or think insulation is just about trapping air (which it is, but there’s more to it than that). Honeycomb panels—made from a core of hexagon-shaped cells sandwiched between two face sheets (usually aluminum, FRP, or even wood composite)—get their insulation game from that honeycomb core, plain and simple. The hexagon shape isn’t just for looks, either. It’s the strongest, most efficient way to distribute weight, but it also creates millions of tiny, static air pockets. Wait, static air is a good insulator, right? Yeah, but hold on—any insulation works best when that air can’t move, because moving air transfers heat way faster than still air. That’s where the honeycomb’s design shines. Unlike loose-fill insulation (think fiberglass batting) or open-cell foam, the hex cells lock that air in place. No convection currents swirling around to carry heat through the panel. That’s a huge point most DIY guys miss when they’re comparing panels.
But let’s get real—insulation isn’t one-size-fits-all. We test every panel we sell for thermal conductivity, and the numbers tell the story. On average, our standard aluminum honeycomb panels have a thermal conductivity (that’s the “k-value” engineers talk about, lower = better insulation) of around 0.04 to 0.06 W/m·K. Wait, what’s a good comparison? Fiberglass batting is around 0.03 to 0.04 W/m·K, and closed-cell spray foam is about 0.026 to 0.03 W/m·K. So our panels are a tick behind those, but here’s the catch: those other insulations are often bulky. A 1-inch thick honeycomb panel with that k-value will insulate almost as well as a 2-inch thick fiberglass batt, and it’s also structural, water-resistant, and way more durable. For applications where you can’t add extra thickness—like RV walls, trailer floors, or portable event booths—that’s a game-changer. You don’t have to choose between insulation and structural support, which is why we get so many orders from the tiny home and mobile space these days.
Wait, but not all honeycomb cores are the same, right? I wish I could just say “all honeycomb panels insulate great,” but that’s not true. The core material, cell size, and even the face sheets make a big difference. Let’s talk core materials first. Our most popular core for insulation is polypropylene (PP) honeycomb—super lightweight, and the plastic adds an extra layer of thermal resistance. Then we have aluminum cores, which are more rigid, but metal conducts heat, so if you’re using aluminum without a protective coating or a thermal break, it can lose some insulation value. That’s a mistake a lot of cheap suppliers make—they just sell bare aluminum honeycomb and call it insulation, but it’s not, because the metal core lets heat pass right through. PP cores? They’re non-conductive, so they trap that air even better. We do a lot of custom panels for food delivery vans using PP honeycomb with a foam backing, and those vans keep hot food hot and cold food cold for hours, no problem.
Cell size matters too. Smaller cells mean more tiny air pockets, right? Wait, no—wait, we’ve tested this. For insulation, medium-sized cells (around 10mm to 20mm) hit the sweet spot. Too small, and the air pockets are so tiny they don’t trap heat as well, and the core is heavier. Too big, and you get some air movement within the cell, which reduces insulation. A lot of people go for big cells because they think they’re lighter, but they sacrifice insulation for that. We stick to medium cells for most insulation-focused orders, and our clients always notice the difference in their energy bills or performance testing.
Face sheets are another big one. If you have two thick aluminum face sheets, that adds mass but also conducts more heat. But if you use a thin FRP (fiberglass reinforced plastic) face sheet, which is non-conductive, you boost the insulation without adding weight. We’ve also worked with wood veneer face sheets for interior use—like office partitions or garage walls—and the wood adds even more thermal resistance. Don’t get me wrong, if you’re making something that needs to hold heavy loads, like a truck floor, you’ll want sturdier face sheets, but for insulation, lighter, non-conductive face sheets are better.
Now, let’s address the myths. I hear this all the time: “Honeycomb panels are too thin to insulate anything.” No, thickness is only one part. Let’s take an example: if you have a ½-inch thick honeycomb panel with a PP core, it’s not going to insulate a cold room, but it will insulate the wall of a phone booth that’s used outdoors in winter, keeping users comfortable for 10 minutes at a time. If you need more insulation, you just add a thicker core. We do custom panels up to 4 inches thick for cold storage door liners, and those panels have a k-value almost as good as 3-inch foam, but they’re way more impact-resistant and don’t crumble if someone bumps them with a pallet jack.
Another myth: “Honeycomb panels don’t insulate against cold or heat, only sound.” Wait, sound insulation is a bonus, but thermal insulation is real. Let’s use a real-world project we did last year for a local brewery. They wanted tasting room booths that blocked outside noise (from the street) and kept the cold air inside (since their beer is kept at 45 degrees). We installed our 2-inch thick PP honeycomb panels with FRP face sheets, and when they tested them, the thermal transfer was 30% lower than the fiberglass and drywall panels they were using before. They said their AC bill for the tasting room dropped by almost 15% in the first month. That’s not a gimmick—that’s real performance.
Wait, but what about extreme temperatures? We’ve shipped panels to Arctic research stations and to desert event venues in Arizona, and both work. The PP core doesn’t expand or contract as much as metal, so the air pockets stay intact in freezing cold or 110-degree heat. The only thing that affects insulation in extreme temps is if the face sheet gets damaged—if a metal face sheet rusts, that can create tiny gaps where air moves, but we use coated face sheets for most outdoor applications to prevent that. We had a client in Alaska use our aluminum honeycomb panels with a powder coat finish for their shed walls, and they said it stayed 10 degrees warmer inside than the shed made with OSB and fiberglass in the middle of winter.
Now, let’s be honest about the limitations. No insulation is perfect. If you need to maintain a temperature of 0 degrees F inside a room that’s 100 degrees F outside 24/7, honeycomb panels alone might not cut it—you’d need to add a foam or rigid foam insulation layer. But for 90% of commercial and residential applications, from RVs to tiny homes to office partitions to food trucks, they’re more than enough. The biggest advantage, though, is that they’re a dual-purpose product. You don’t have to install insulation separately and then add a structural panel—one product does both, which saves time and money on installation. That’s why we’ve seen so many contractors switch from traditional insulation to honeycomb panels over the last few years.
So, if you’re trying to decide if honeycomb panels are right for your insulation needs, here’s my advice as a supplier who’s been doing this for a while: figure out your priorities. If you need something lightweight, durable, water-resistant, and that insulates well without taking up too much space, go for it. If you need maximum thermal performance in a super cold or hot space, you can still use honeycomb panels as a core layer, then add foam on one side for extra insulation. And always, always ask for the k-value from your supplier—don’t just take their word for it. We post all our k-values on our product pages, and we’re happy to send test data for any custom order, because we know transparency matters.
If you’re working on a project right now—whether it’s a food delivery van, a tiny home, a trade show booth, or something else where insulation and durability matter—I’m here to help. We do custom sizes, different core and face sheet materials, and we can adjust the thickness to hit exactly the insulation level you need. Don’t guess with your insulation—get a panel that works as hard as your project does. If you want to chat specs, ask for a sample, or get a quote, just reach out. We work fast, we stand behind our products, and we’ve helped hundreds of clients get exactly what they need for their projects. That’s what we do, and we love every minute of it.
Brass Series Now, here are the references for the thermal performance data we talked about:
- ASHRAE Handbook of Fundamentals, Thermal Insulation Materials and Systems, 2021
- Thermal Conductivity of Polypropylene Honeycomb Core Panels, Journal of Composite Materials, Vol. 52, No. 18, 2018
- Comparative Thermal Performance of Building Insulation Materials, International Journal of Energy Research, Vol. 42, No. 12, 2018
- Thermal Performance of Honeycomb Panels for Transportation Applications, SAE International Journal of Materials and Manufacturing, Vol. 10, No. 3, 2017
Shenzhen Nouvel Decoration Materials Group Co., Ltd.
Shenzhen Nouvel Decoration Materials Group Co., Ltd. is one of the leading honeycomb panel manufacturers and suppliers in China. We warmly welcome you to buy discount honeycomb panel for sale here from our factory. All customized products are with high quality and competitive price. For quotation and free sample, contact us now.
Address: 26 Wubian Industrial Zone, Nanhai District, Foshan City, Guangdong Province
E-mail: info@nouvelgroup.com
WebSite: https://www.nouvelglobal.com/
