Have you ever wondered how your house is built? Well, this app lets you design the roof of your house and learn about the different materials used in the process. It will help you decide which kind of roof you want to build and what materials to use in it.

Why are these materials so important? They all have their advantages and disadvantages. For example, a roof made of clay is cheap and easy to build, but it can easily collapse in the case of a storm. On the other hand, a roof made of concrete is strong and durable, but it can be very expensive and difficult to build.

You can learn more about the different types of materials and their properties by clicking on the corresponding tab in the menu.