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Thatching

technology Maturity 9-11

People make roofs from dry plants.

Ogi Shirakawa06n3200.jpg
Ogi Shirakawa06n3200.jpg
They use straw or leaves. The plants stay dry. This keeps the house warm. It is a very old way to build. Do you like straw roofs?
Korea south traditional house.jpg
Korea south traditional house.jpg

39 words

People make roofs from dry plants.

Ogi Shirakawa06n3200.jpg
Ogi Shirakawa06n3200.jpg
They use straw or leaves. These plants stay dry. This keeps the house warm.
Korea south traditional house.jpg
Korea south traditional house.jpg

Builders layer the plants on top of each other. This helps water run away from the house. This is how the roof stays dry.

Many people use this old way to build. In some lands, they use palm leaves. In other places, they use reeds.

Some people like these roofs because they look nice. They can also be good for the Earth. It is a very special way to build a home.

98 words

Thatching is an old way to build a roof.

pub.williams.arp.750pix.jpg
pub.williams.arp.750pix.jpg
Builders use dry plants like straw, reeds, or palm leaves. They layer these plants on top of each other. This way, water runs off the roof and stays away from the inside. Because the plants are packed tightly, they trap air. This helps the roof act as insulation to keep a house warm.
Korea south traditional house.jpg
Korea south traditional house.jpg

Different places use different plants. In Bali, people use black fibres from the sugar palm.

PrayerAtBesakih.jpg
PrayerAtBesakih.jpg
In the Americas, groups like the Inca used thatch for their buildings.
87 - Machu Picchu - Juin 2009.jpg
87 - Machu Picchu - Juin 2009.jpg
In the UK, many roofs use wheat straw or water reed. A skilled worker can make a straw roof last over 50 years. They use small staples called spars to hold the plants in place. These spars are made from twisted hazel sticks.

Some people think thatch burns very easily. However, some say it burns slowly, like a closed book. Most fires happen because of problems with chimneys. To stay safe, people use smoke detectors in the roof.

House river kwai.jpg
House river kwai.jpg
Thatching is becoming popular again. People like it because it is a sustainable way to build. This means it is friendly to the Earth.

207 words

Thatching is a very old way to build a roof.

pub.williams.arp.750pix.jpg
pub.williams.arp.750pix.jpg
Builders use dry plants like straw, water reed, or palm branches. They layer these plants so that water runs away from the inside. Because the plants are packed tightly, they trap air inside the roof. This makes the thatch work as insulation to keep a home warm.
Korea south traditional house.jpg
Korea south traditional house.jpg
People use this method in both hot and cold places around the world. It is a way to build that is friendly to the Earth.

To make a roof, a worker must follow a careful way it works. First, they bundle the straw into groups called yelms. These yelms are taken up to the roof. The worker then attaches the plants using small staples called spars. These spars are made from sticks of hazel that have been twisted.

Moirlanich Longhouse thatched roof.jpg
Moirlanich Longhouse thatched roof.jpg
The thickness of the layers is very important for the roof to last. A good roof must have enough thatch to cover the fixings. If the fixings become visible, it is time for a new layer.

Thatching has been used for a very long time by many people. In Europe, people likely used rushes or heather in the late Palaeolithic period. Later, people began using straw during the Neolithic period when they grew cereals.

87 - Machu Picchu - Juin 2009.jpg
87 - Machu Picchu - Juin 2009.jpg
Many groups in the Americas, like the Inca and the Aztec, lived in thatched buildings. In the United Kingdom, thatch was the main roof for many people in the countryside until the late 1800s. Today, there are about 1,000 full-time thatchers working in the UK.

Different parts of the world use different plants for their roofs.

PrayerAtBesakih.jpg
PrayerAtBesakih.jpg
In Bali, Indonesia, people use black fibres from the sugar palm called ijuk. In Hawaii, builders use a plant called alang-alang. In Fiji, they combine fan palm leaves with reed walls. In the United States, the Seminole and Miccosukee people use palmetto leaves. In the UK, many roofs use wheat straw or water reed. Most of the water reed used in the UK now comes from places like Turkey or China.

Some people worry that thatch might catch fire easily. However, some say it burns slowly, like a closed book.

House river kwai.jpg
House river kwai.jpg
Most fires actually happen because of problems with chimneys or wood burners. To stay safe, people can use smoke detectors in the roof space. They can also use fire retardant to help stop flames from spreading. Even though it is an old method, many people today choose thatch because it looks rustic and helps preserve history.

431 words

Thatching is the traditional craft of constructing a roof using layers of dry vegetation. Builders use materials such as straw, water reed, sedge, rushes, heather, or palm branches. The primary goal is to layer these materials so they shed water away from the inner roof structure. Because the vegetation is densely packed, it traps air within the layers. This trapped air allows the thatch to function as natural insulation for a building.

pub.williams.arp.750pix.jpg
pub.williams.arp.750pix.jpg
This method is used in both tropical and temperate climates around the world.

The process of creating a thatch roof requires great skill and specific tools. A skilled thatcher first bundles the straw into groups known as yelms. These bundles are carried up to the roof to be installed. To secure the material, the worker uses staples called spars, which are made from twisted hazel sticks.

Moirlanich Longhouse thatched roof.jpg
Moirlanich Longhouse thatched roof.jpg
The longevity of the roof depends heavily on the depth of the thatch covering these fixings. If the horizontal wooden sways or the hair-pin spars become visible at the surface, the roof requires maintenance. In the United Kingdom, the maintenance cycle for thatch is typically between 12 and 15 years, at which time the ridge must be replaced.

Different regions utilize specific plants based on what is locally available. In Bali, Indonesia, builders use black fibres from the sugar palm called ijuk for temple roofs and meru towers.

PrayerAtBesakih.jpg
PrayerAtBesakih.jpg
In Hawaii, alang-alang grass is a common material, while Southeast Asian attap dwellings use nipa palm leaves. In Fiji, thatchers might combine fan palm leaf roofs with layered reed walls. In the southeastern United States, the Seminole and Miccosukee people use palmetto leaves for their chickees. Even in the UK, materials vary; while long straw and wheat reed are common, water reed is often used as a "one coat" material.
Korea south traditional house.jpg
Korea south traditional house.jpg
Because large reed beds are now uncommon in much of England, over 80% of UK water reed is imported from places like Turkey, China, and South Africa.

Thatching has a deep history that spans thousands of years. In Europe, wild vegetation like bulrush or heather was likely used during the late Palaeolithic period. As people began growing cereals during the Neolithic period, they likely started using straw.

Moirlanich Longhouse thatched roof 2.jpg
Moirlanich Longhouse thatched roof 2.jpg
In the Americas, great civilizations like the Maya, the Inca, and the Aztec lived in thatched structures. In the United Kingdom, thatch was the primary roofing material for most rural populations until the late 1800s. While the availability of materials like Welsh slate increased due to railways and canals, thatch remained common in the countryside. In the mid-1800s, the number of thatched properties in the UK actually increased as agriculture expanded.

Technological changes in farming have significantly impacted the availability of high-quality thatch. The introduction of the combine harvester in the late 1930s and 1940s reduced the supply of good quality straw. Additionally, the use of nitrogen fertilizer in the 1960s and 1970s weakened the straw, reducing its lifespan. To combat this, specialist growers have returned to planting "heritage" varieties of tall-stemmed wheat. These include varieties such as Squareheads Master, Rampton Rivet, and April Bearded.

Ogi Shirakawa06n3200.jpg
Ogi Shirakawa06n3200.jpg
However, in the UK, the Plant Variety and Seeds Act 1964 makes it illegal to trade certain older seed varieties, which can limit access to traditional materials.

There is a common perception that thatch is a major fire hazard, but the reality is more nuanced. Some people familiar with the material say that thatch burns slowly, comparing it to a closed book.

House river kwai.jpg
House river kwai.jpg
Most thatch fires are actually caused by faulty chimneys or wood burners rather than the thatch itself. Sparks from burning rubbish or degraded flues can ignite the surface. To prevent this, builders can strip thatch away from the immediate area of a chimney stack. Modern safety measures include installing smoke detectors in the roof space and using spray-on fire retardants to reduce the spread of flames.

Today, the status of thatching has shifted significantly in many places. In the UK, thatch was once seen as a mark of poverty, and its use declined during the agricultural recession of the late 19th century. However, over the last 30 years, it has become a symbol of wealth and a popular choice for those seeking an ecologically friendly or rustic look. There are approximately 60,000 thatched properties in the UK, and about 1,000 full-time thatchers remain in the profession. This renewed interest is driven by a desire to preserve historic buildings and use sustainable materials.

752 words
🖼️ Images & Media (10)
File:pub.williams.arp.750pix.jpg
pub.williams.arp.750pix.jpg
File:87 - Machu Picchu - Juin 2009.jpg
87 - Machu Picchu - Juin 2009.jpg
File:PrayerAtBesakih.jpg
PrayerAtBesakih.jpg
File:Ogi Shirakawa06n3200.jpg
Ogi Shirakawa06n3200.jpg
File:Korea south traditional house.jpg
Korea south traditional house.jpg
File:House river kwai.jpg
House river kwai.jpg
File:Partially thatched roof.jpg
Partially thatched roof.jpg
File:Lucy in the sky.jpg
Lucy in the sky.jpg
File:Moirlanich Longhouse thatched roof 2.jpg
Moirlanich Longhouse thatched roof 2.jpg
File:Moirlanich Longhouse thatched roof.jpg
Moirlanich Longhouse thatched roof.jpg
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