“Seaweed pillows [knit mesh tubes filled with dried seaweed] were used as cladding for this holiday house on the Danish island of Læsø by architecture studio Vandkunsten and non-profit organisation Realdania Byg.
The Modern Seaweed House revisits the traditional construction method in Læsø, where for many centuries trees were scarce but seaweed has always been abundant on the beaches. At one stage there were hundreds of seaweed-clad houses (‘Zostera marina’ seaweed) on the island but now only around 20 remain, which prompted Realdania Byg to initiate a preservation project.
The team enlisted Vandkunsten to design a new house that combines the traditional material with twenty-first century construction techniques.
“Seaweed is at the same time very old and very ‘just-in-time’, because it is in many ways the ultimate sustainable material,” Realdania Byg’s Jørgen Søndermark told Dezeen.
“It reproduces itself every year in the sea, it comes ashore without any effort from humans, and it is dried on nearby fields by sun and wind,” he continued. “It insulates just as well as mineral insulation, it is non-toxic and fireproof, and it has an expected life of more than 150 years!”
Read more at the source: Dezeen Magazine
Related: Turning seaweed into construction insulation
“Although the natural material of the Neptune grass is regarded as waste, this readily abundant material has a variety of characteristics that make it useful in construction. Neptune grass seaweed is virtually non-flammable, resistant to mold, and it can be used as insulating material without the need for chemical additives. It can be used as insulation between the rafters of pitched roofs, to insulate interior walls, or to reduce the amount of heat lost through building envelopes. And with a salt content of just 0.5 to 2 percent, Neptune grass can be used to produce insulation material that will not rot away. seaweed is 100 percent organic and entirely free of toxic matter, making it also particularly suitable for allergy sufferers.”
Thanks to Patti for sending this tip.