Hempcrete in Cold Climate

How Does Hempcrete Handle in Cold Climate?


Climate change is a serious threat to our world. The rising emissions of greenhouse gases are resulting in an increase in the average temperature of our planet. Eco-friendly building materials like hempcrete are growing in popularity to fight this temperature change. It not only is naturally derived but it plays an essential role in controlling the temperature during all weather, but this article will focus on the cold.


The Insulating Nature Of Hempcrete

Hempcrete is a hemp-lime insulating material that can act as a protective covering for your house. The U-value and R-value of hempcrete make it an ideal material to be used for construction. 

The U-value of a material determines how much heat can pass through a material. The lower the U-value, better the insulation. The hemp plant has a U-value of 0.40 which makes it one of the best insulating materials. 

The higher the R-value, the more a material resists heat flow. Hempcrete has an R-Value of 2.4/inch based on 4:1:1 mix combo, making it more resistant to heat flow. Thus, during cold weather, in-floor heating of hempcrete can provide efficient warming to the house.  


Moisture Regulation Property Of Hempcrete

Another feature of hempcrete that makes it suitable to be used in cold weather is its moisture-regulating property.  This property of hempcrete allows it to absorb excessive moisture from the air and release it when the conditions allow. 

Being a porous and breathable material, it can regulate excessive moisture

It has been estimated that a 35 cubic ft (1 cubic meter) hempcrete wall can absorb and lock 242 – 364 lbs (110 – 165 kg) of carbon. As a result, buildings constructed with hempcrete will absorb the carbon from the atmosphere and lock it away, giving durability to the building.


A Non-Toxic Material

Natural materials like hempcrete are mild, eco-friendly and do not pose any threat to the health of those working with the material (you don’t see construction workers wearing hazmat suits while working with it). The hemp plant does not require pesticides, herbicides or chemical fertilizers to grow, thus resulting in less damage to the environment. Furthermore, once placed in the walls and fully dried, hempcrete does not release any toxins.