Right Seam, Right Slope, Right Gauge: Making Sense of Standing Seam Roof System Selection

Standing seam metal roof systems are widely known to stand the test of time. They offer durability and architectural flexibility; however, long-term performance depends heavily on selecting the right seam, slope, and gauge for the specific application.
Jan. 14, 2026

In this Ask the Expert feature, industry veteran David Mercer shares important standing seam roof slope requirements, where mistakes most often occur, and how to prevent them, giving architects and consultants practical guidance for system selection. Readers will discover:

  • Design questions that matter: Identify the five key questions architects should ask at the start of design to reduce risk, avoid common mistakes, and ensure the selected standing seam metal roof system performs as intended over its service life. 
  • The functional differences of each standing seam roof seam type: Learn how common standing seam roof seam types—including snap-lock, 90-degree mechanical, 180-degree double-lock, and batten cap profiles—differ in wind uplift performance, constructability, and appropriate use.
  • Slope and system behavior: Understand how hydrostatic vs hydrokinetic roof design considerations influence seam height, waterproofing strategy, and warranty eligibility. 

Download the Ask the Expert today and unlock the knowledge you need to specify standing seam roofs that perform as intended under real-world conditions.