What type of joint is most common in metal roofing?

The standing seam joint is the most common type of joint used in metal roofing primarily due to its durable and weather-resistant design. This joint features vertical seams that are raised above the roofing surface, allowing water to flow off the roof and minimizing the risk of leaks.

Standing seam roofing systems also provide enhanced structural stability and accommodate thermal expansion and contraction, which is crucial as metal can expand and contract significantly with temperature changes. This design allows the roofing panels to be interlocked securely, providing a clean aesthetic while also facilitating easy installation and maintenance.

Additionally, standing seam roofs are often associated with longer warranties and better performance under harsh weather conditions compared to other joint types. This combination of functionality and resilience makes the standing seam joint a preferred choice for both residential and commercial metal roofing applications.