Material Spotlight: Let's Talk Cork Siding

What comes to mind when you think of cork? From wine bottle tops and tack boards to flooring, cork is a popular material for a wide range of products in our daily lives. Cork has even been used as an eco-friendly form of building insulation. It is in that vane that cork is now showing up as a sustainable option for siding.

Cork Flat by Formafatal, Architizer

At Harka, we’re all about exploring the latest in sustainable and non-toxic materials. So, let’s talk about what cork siding can do for you.

So why is cork considered a sustainable material in the first place? Cork is a renewable resource harvested from the bark of cork oak trees without harming them. This means that cork is non-toxic and has a low upfront carbon footprint. More commonly used siding materials such as fiber cement, composite wood, and vinyl (how is this material still being use?) are filled with toxic chemicals and take a lot of energy to make.

Ok, but how does it perform? Cork is surprisingly durable. It is naturally resistant to moisture, mold, and mildew, making it an excellent choice for various climates. Plus, no more worrying about creepy crawlies making a home in your walls because cork is resistant to more than 38 species of insects including those pesky termites. It’s also fire-resistant. Yeah, you heard that right. Cork doesn’t go up in flames easily, giving your home an extra layer of protection. For folks in wildfire-prone locations, this is a major benefit.

The Cork Haven by Nate Dalesio, Dezeen article by James Brillon

Another standout benefit of cork siding is its superior thermal insulation properties. Cork’s cellular structure traps air, which helps to maintain consistent indoor temperatures. This means that during the hot summer months, cork siding can keep your home cool, and during the winter, it will help retain heat. Its thermal properties also make it an optimal acoustic insulator, absorbing sound vibrations and reducing noise pollution from the outside. Providing both thermal and acoustic comfort, you can chill on those energy bills and do your bit to reduce your carbon footprint. Win-win, right?

While the benefits are great, let’s talk about what we are all wondering, cost. Companies like ThermaCork sell cork at a comparable cost per square foot to your more typical fiber cement siding, and since the panel sizes are are larger and easy to work with there are is some savings in labor costs as well. Due to its thermal properties, cork siding can also serve as exterior insulation, and this where you can really see some significant savings. By doubling its functionality, you can essentially eliminate an entire layer of material in your wall saving on both extra material and labor costs.

Now, let's talk aesthetics. Cork siding isn't just practical; it's a vibe. Imagine your home wrapped in a natural, textured material that stands out from your neighbors. It's got that rustic-meets-modern look that screams eco-chic.

Cork siding is a sustainable, durable, and aesthetically appealing option for modern homes. Its excellent thermal and acoustic insulation properties, combined with its resistance to moisture and fire, make it a practical and eco-friendly choice. By opting for cork siding, you are not only enhancing the comfort of your home but also making a positive impact on the environment. If you are considering a siding material that offers both functionality and sustainability, cork siding might be the perfect solution for you. Embrace the benefits of cork and enjoy a greener, more resilient home.

Want to see cork siding in action?

Check out this article from The Architect’s Newspaper exploring the non-toxic home designed by BLDUS. It’s loaded with high-performance features and, you guessed it, cork siding.

Poplar Grove Designed by BLDS. (Ty Cole)