When considering a metal roof system, concerns about the noise associated with thermal expansion and contraction may arise. However, it’s important to understand that all roofs, regardless of material, undergo expansion and contraction due to atmospheric and climate changes.
Understanding Thermal Expansion/Contraction
Atoms in all materials are in constant motion, a concept we learned in science class. Heat increases the excitement and movement of atoms, causing materials to expand. Conversely, cold temperatures reduce atomic excitement, resulting in contraction. This phenomenon applies to metal roofs, leading to the occurrence of sounds such as pings, dings, clicks, and pops.