Metal Roofing Materials and Wall Systems
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Union's ML200 panel is a mechanically seamed standing seam roof system that can be used for structural or architectural applications. The mechanically seamed standing seam system panel is secured with concealed clips and the standing seam panel side laps are locked together using a rooftop seaming machine. This type of standing seam roof system provides very high wind uplift resistance and structural integrity. ML200 standing seam system can be specified as an accent feature or a total roof system for schools, shopping centers, banks, hotels, offices, and a variety of other applications.

ML200 (Mechanical-Lock) Standing Seam

ML200 Standing Seam System Gauge Options:

ML200 Standing Seam System Finish Options:
Painted Grades:


Unpainted Grades:  Acrylic coated Galvalume

Please click here for ML200 (Mechanical-Lock) Standing Seam System care and maintenance instructions


Click here for 24 gauge Kynar colors.

ML200 (Mechanical-Lock) Standing Seam System Testing and Certifications
ASTM E-1592 Wind Uplift
ASTM E-1646 Water Infiltration
ASTM E-1680 Air Leakage
UL-90 Wind Uplift
UL Class A Fire Resistance

Florida Building Code Approval click here.

ML200 (Mechanical-Lock) Standing Seam System Installation
The ML200 mechanically seamed standing seam system can be installed on a solid deck or open steel framing with slope greater than 1/2 :12.


Residential Metal Roofing


Post-Frame/AGRICULTURAL Metal Roofing

Commercial / Industrial Metal Roofing