We’ve written before on the Container Grade about the energy efficiency of shipping container homes and storage container homes. There are several reasons why container living spaces are so eco-friendly. One of them has to do with how to insulate a shipping container in the first place, which we’ll get to shortly.
It’s important to understand that shipping containers are designed with energy efficiency in mind before they ever begin their second lives as living spaces.
Consider Chiquita Brands International, the huge and world-famous supplier of (mostly) bananas. The company has been working to improve the design and energy efficiency of containers used to store and ship their fresh produce to ports throughout the world.
Some of the innovations — which, according to a Chiquita press release, have led to an annual 17,000-ton reduction in CO2 emissions — include containers that:
- Are 50% more energy efficient than older models
- Require less energy to function
- Are equipped with greenhouse-friendly refrigerants
- Feature better insulation
“Even with a 25% increase in the number of Chiquita containers in use,” writes Chris Kroger of The Packer, “the company saw an 11% drop in electricity use because of the more energy-efficient containers.”
It’s that final bullet point above that we’ll focus on now.
Hopefully, by the time you’re done reading this blog post, you’ll have a better understanding of how to insulate the interior space of a shipping container. (Not to mention some pros and cons.)
Insulating A Shipping Container
In order to maintain a comfortable temperature inside shipping containers, they need to be insulated. It’s also important to insulate in order to prevent condensation, which can lead to corrosion and mold.
Before moving on, let’s clarify a couple of things.
First, Container Grade sells a lot of insulated containers for refrigeration purposes. These come insulated; Container Grade can add a new cooling system to them, if and when necessary.
Second, insulating a container for a mini home, however, is a different process.
There are several shipping container insulation options; which one you choose is based on a variety of factors, including the climate where the container home will be located. (Another factor is budget.)
Here’s a quick look at the most typical kinds of insulation.
Blanket Insulation
These come in batts, which are pre-cut to fit, and rolls, which must be cut during installation. You’re probably already familiar with this type of insulation; it’s the fluffy, compressible kind that wraps your home in some type of fiber. It’s relatively inexpensive and easy to install.