General
Alang-alang
A traditional Indonesian thatched roof made from dried alang-alang grass, valued for its natural appearance, thermal insulation, and distinctive tropical character.
Alang-alang is a thatching material made from dried Imperata cylindrica, a tropical grass commonly found across Indonesia. In Bali, alang-alang roofs are a distinctive feature of traditional architecture and tropical-style villas.
The grass is bundled and layered to create a natural roof covering that helps keep interiors cooler by providing shade and insulation. Its texture and warm, earthy appearance are often used to create a relaxed tropical atmosphere.
For the general English term, see thatched roof.
Alang-alang roofs require periodic maintenance and eventual replacement as the grass deteriorates due to weather exposure. Their lifespan depends on the quality of the material, roof construction, climate, and maintenance.
When a villa listing highlights an alang-alang roof, check whether it serves as the primary weatherproof covering or is purely decorative. It is also worth asking about the roof’s age, maintenance history, and expected replacement costs.