Introduction to seaweed house building materials: Seaweed houses are very particular about the selection of construction materials. The roof alone requires grass, seagrass, wheat straw and other grass. Mountain grass is similar to reeds and has strong waterproof ability; seaweed is kelp grass, which is a wild algae that grows in shallow seas. In addition to being insect-proof, mildew-proof, and not easy to burn, it is also warm in winter, cool in summer, and comfortable to live in. The advantages of being durable for hundreds of years have won the favor of local residents. When building a thatched house, a layer of wheat straw is added to each layer of seaweed, so that the house built is very strong.