
Accurate Roofing Thickness Measurement: The Haag Panel & Membrane Gauge
ACCURATE ROOFING THICKNESS MEASUREMENT: THE HAAG PANEL & MEMBRANE GAUGE By Amber Prom, P.E., and Steve Smith, P.E. Whether you’re an engineer, insurance adjuster, roofing consultant, or contractor, if you commonly find yourself collecting data out in the field, you rely on a kit of tools to assist you. From tape measures, cameras, levels, or chalk, the precision and reliability of your tools is crucial. If your tools are unreliable, you can end up with an incorrect assessment and/or cost estimate. What is the Haag Panel & Membrane Gauge? The Haag Panel & Membrane Gauge (HPMG) is a unique tool that every field investigator should have at the ready when inspecting metal roofing panels or single-ply roofing. While many inspectors measure metal roofing panel thickness using a standard sheet metal gauge, the HPMG has been carefully designed by Haag Research & Testing to accurately measure most every metal roofing panel you will