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Because they are sustainable and cost-effective housing alternatives, shipping container houses are becoming more widespread in many places. These sustainable home projects are created utilizing shipping containers that are not being used for transportation anymore. Even though the container houses are modest, insulating them is a critical job.

Interior insulation may make a small container appear even smaller. Furthermore, many people dislike living in a small, cramped space. However, there are a variety of insulation alternatives available to prevent this problem and produce a more beautiful, spacious, and livable house.

What are the downsides of container house insulation?

The most difficult aspect of insulating a container house is the walls’ shallow depth. Although the container’s metal walls are durable and strong, their thinness can be a hindrance to good insulation.

Before picking on an insulating material, you should consider how you want your container home’s walls to be. For example, suppose you wish to build a multi-container home out of more than one shipping container. Because of the increased square footage of the house, extending the room to the interior of the walls may not be an issue. However, space limits down if you only have one or two containers. In such instances, it is preferable to complete outside insulation and cover it with exterior cladding.

Selecting the Best Insulation Material for Your Container Home

Insulation using spray foam

It is one of the easiest insulating materials to utilize on both the inside and outside of a container house. Because practically all shipping containers are painted with toxic paint, they can be hazardous to their occupants. Spray foam insulation, on the other hand, can assist you to decrease its pollutants by trapping VOCs.

Spray foam insulation for container home
Exterior Spray foam insulation for container home (Source Pinterest)

Spray foam insulation is a byproduct of the petrochemical sector, which is not synonymous with environmentalism. The EPA has recognized polyurethane spray as possibly dangerous to one’s health. It has the potential to cause lung damage, asthma, and other breathing problems. However, because there is a range of spray foam insulation materials available, you can always compare for a better alternative that has a negative influence on the environment.

Icynene insulation is a water-blown spray foam insulation product that expands as it solidifies. It insulates a home through microscopic plastic bubbles that develop in the insulation’s interior. This polyurethane spray contains very little VOC. As a result, it is more likely that it will be entirely invisible for roughly three weeks.

Sustainable insulation materials for container houses

Cotton insulation

A crucial part of sustainable housing is to use recycled materials as much as feasible. Cotton-based insulation manufactured from recycled materials has an R-Value of 3.5 per inch, which is ideal for shipping container housing.

cotton insulation
Cotton insulation (Source Container One)

Denim insulation, on the other hand, requires a vapor barrier since it can become thick when wet. As a result, the insulation’s effectiveness will deteriorate over time.

Wool insulation

Wool from sheep is a natural insulator. While it is environmentally friendly, it performs well as an insulator, with an R-value of 3.5 per inch. The lanolin in sheep wool is inherently flame retardant. Therefore, it does not need further chemical solutions to treat the wool.

Cork insulation

When it comes to environmentally friendly solutions, cork is a renewable and biodegradable substance derived from trees. It is yet another excellent insulating option for container houses.

Cork insulation
Cork insulation for shipping container homes (Source HAUL HOME)

Cork trees does not get chopped down to produce cork. Instead, the bark of the trees gets removed every nine years. Cork becomes carbon negative because of this process, as the cork tree absorbs carbon from the atmosphere.

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