Spandek roof is a roof made of aluminum and zinc. Spandek Ibi also added a silicone composition to increase the flexibility of the roof. As for the composition ratio commonly used to form spandex roofs, namely aluminum 55 percent, zinc 42-44% percent, and 1-5% percent silicon. The advantages of spandek roofs are anti-breakage, anti-porous, anti-termite, not translucent to sunlight and light so that it is easy to install.