Unusual houses with roofs made of seaweed
• Unusual houses with roofs made of seaweed
The village on the island Leso (Laesoe, Danish territory) preserved houses built hundreds of years ago, in which a unique roof - from algae.
In the Middle Ages was known Leso salt production on the island were built numerous salt furnace.
A typical house from algae to Leso. Houses made of seaweed declared one of the Seven Wonders of Northern Jutland.
Fuel used for the salt furnaces grew immediately - forest around the island, and then most of the trees were cut down.
Without wood production of salt in Leso collapsed. Deforested island was vulnerable to wind and sand of the village were recorded.
With virtually no new wood to build houses, the islanders built their seaweed and driftwood.
Since algae are full of salt water, these homes were not subject to rotting and virtually unchanged since the 17th century.
These algae, which grow in abundance in the sea surrounding the island Leso, have long bright green leaves in the form of tapes. They are about a centimeter wide and about two meters in length. Farmers harvested them, washed and dried by the sea.
The dried seaweed tied and twisted into thick ropes, which are thrown through the rafters of houses, creating a roof.
The roof of the algae looks like a huge cloak, put on the house.
Fresh seaweed roof is not waterproof, but water can not enter the building because of its thickness. Less than 12 months after manufacture of the roof becomes a silvery-gray, solidifies and becomes waterproof. Mass hardens over time, the roof is getting old.
Due to the high concentration of salt in the air, algae do not burn and have a very long life - typically, about 200 years, but some have already served for 400 years.
In the 1930s, the algae were attacked by the disease, because of which it was difficult to build the roof. This was the beginning of the end for the roofs of the algae.
In the 18th century there were more than 250 homes and farms with roofs of algae, has survived 19 houses.
these homes are guarded now as historical monuments.