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.
Metal Roof Thermal Expansion: Causes of Noise
When the sun warms a metal roof, certain segments expand at a different rate than others. The resulting friction, tension, and energy release along these segments create the noises mentioned above. Similarly, as the roof cools in the evening, contraction occurs and may produce similar sounds.
Minimizing Metal Roof Noise
Metal roofing systems are engineered, designed, and professionally installed to minimize thermal expansion noises. Experts at Mountaintop Metal Roofing employ strategies to accommodate expansion and contraction, ensuring that any sounds are brief and unobtrusive. Although occasional pops may still be heard, their intensity and duration are significantly reduced.
This post was written by Ted Williams! Ted is the owner of An Old Time Roofing which is the premier roofing company that offers St Petersburg roofing contractor! Ted is a Master Elite Weather Stopper GAF Roofing Contractor, a double award winner of Best Steep-Slope Contractor from GAF and achiever of Master Elite Consumer Protection Excellence from GAF. He has been serving the Pinellas County area since 1978. Old Time Roofing has a tradition of quality workmanship, servicing residential and commercial properties.
