Materiality in architecture refers to the physical and tactile qualities of the materials used in a building's design. It means how the materials look, feel, and interact with light and sound.
Think about your favorite toy or stuffed animal. You can touch it and feel that it is soft, furry, or smooth. The same is true with the materials in a building.
For example, a brick wall might be rough to the touch, while a glass wall may be smooth and shiny. When the sun shines on a glass wall, it can create interesting shadows and reflections.
The way materials are used in a building can also affect how it feels to be inside. For instance, if a building is made of concrete or metal, it might feel cold and impersonal. On the other hand, if it's made from natural materials such as wood, it could feel warm and welcoming.
Architects use materiality to create a building's desired character and atmosphere. So, when you visit a building or walk through your city streets, pay attention to the materials and how they make you feel.