5 Reasons Enterprising Builders Should Consider Hempcrete Hempcrete as a building material can revolutionise the construction industry

By Tarun Jami

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It is a bygone conclusion that hempcrete is amazing. In fact, when you consider it, there arguably isn't any other building material that has enjoyed as much approval in recent times. But if you're a builder why should you care for this?

You're saving the planet… involuntarily!

Hempcrete is carbon-negative. When you manufacture the material you are actually consuming more carbon dioxide than emitting. Most of the carbon-negativity comes from the biomass, which is the hemp stalk, which during its growth phase consumes more than 2 times its weight of carbon dioxide. In addition, the lime in hempcrete undertakes active carbonation during its service life, continuously sequestering small amounts of carbon dioxide from its surroundings. Not only are some of the raw materials extremely sustainable, but they're also renewable. Unlike AAC blocks, which claim to be "green" materials because they make use of fly ash but consume large amounts of energy in the autoclaving process, manufacturing hempcrete blocks rely on passive chemistry and curing processes, which are absolutely not energy-intensive. So, if you're in the business of constructing green buildings and want to rise above LEED or GRIHA standards, hempcrete is the material for you.

You put food in a poor farmer's belly

In an agro-based economy such as India's, it is a pity that farmers go to sleep without food in their bellies. Mere food crops do not create enough income for their survival and the economy moving away from bio-based is seriously hurting them. The raw materials that are used to produce hempcrete come from agriculture. In fact, the raw materials for all bio-based building materials come from agriculture. By adopting hempcrete products in your projects you are contributing to the welfare of farmers from whom the hemp stalks are bought. The manufacture and retail of hempcrete could improve the income of farmers by up to 20% per annum.

You enable an eco-system

With the world looking at an impending doom because of global warming and climate change owing to a non-renewable manufacturing industry, it is important to lay a foundation in renewable sources. Since infrastructure is the foundation for manufacturing industries, by establishing it using renewable materials would inspire a shift towards a bio-based economy. Furthermore, adopting bio-based materials also has social benefits by making agriculture more profitable, sparking innovation, employment and growth in the agricultural industry. As a result, an entire geoengineering process for mitigating climate change can be executed profitably without additional inputs.

You save money on your building construction

Making the case stronger for itself, the larger unit sizes and lightweight of hempcrete blocks can help reduce construction costs by up to 25% initially. With density lesser than that of water, the dead loads of the building can be reduced drastically as compared to red bricks or other conventional building materials resulting in considerable savings in steel and concrete. Additionally, the larger block sizes similar to that of AAC blocks would require lesser mortar joints, and the flat finished surface of hempcrete would require lesser plastering. The use of lime in hempcrete also means the wall is only set to get stronger with time, improving its durability.

Your customers will thank you every day

Apart from the normal properties that would be expected from a walling material, hempcrete also has additional advantages such as thermal insulation and hygrothermal behaviour. Put simply, hempcrete has the ability to regulate indoor relative humidity thus enhancing the thermal comfort of the occupants, resulting in considerable electricity savings from heating and cooling. A happy customer always goes a long way in ensuring good sales and reputation.

A good business cares not only for profits but also for the society and the planet. It has been proven time and again that a business that cares for sustainability is always more profitable. Up for a rapid growth in business then?

Tarun Jami

Managing Partner and Founder of GreenJams Infrastructures LLP

Tarun is the Founder of GreenJams Infrastructures LLP, a construction start-up focusing on BuildTech and bio-aggregate building materials. The company is currently engaged in the development of hempcrete for adoption by the Indian construction industry.

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