Home Renovation Project: Hemp-based Render improves Insulation

A material made by mixing hemp with lime and water forms a new layer of insulation around this house in Belgium, as part of a renovation by Ghent studio Martens Van Caimere Architecten.

Known as hempcrete, the hemp-based render was applied in thick layers to all four walls of the small house to help it retain heat and make the structure more weather-resistant. The result is a textured surface with a similar appearance to rammed earth.

According to architect Nikolaas Martens, one of the two co-founders of Martens Van Caimere Architecten, the material offers a similar but more sustainable and economical solution than concrete.

"In our projects we try finding solutions to lower the building costs," he told Dezeen. "In the 1950s, 60s and 70s, Belgians were building houses that were badly or not insulated. So renovating these houses in a sustainable way tends to be expensive."


"Hempcrete combines the...

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