CEMCO's newest innovation is the ViperStud®. Developed in conjunction with Marino\Ware through our strategic partnership 'Expedius', ViperStud®,  is a lighter, stronger, and much better option than other products available on the market. Made from high-strength steel, and formed with ViperRib technology, ViperStud® is the flat-steel alternative that is sweeping the industry from coast to coast.






Download the latest version of the Viperstud® Catalog Here

ICC ESR-2620 for Viperstud 



ATI CCRR-0154 Report

Download the substitution request forms in CSI format below:

Pre-Bidding stage substitution request form

Post-Bidding stage substitution request form

Link to the following 1 and 2-hour Fire-Test Reports:

UL-U419

UL-V498


ITS/Warnock-Hersey

1 hour 5/8 Type X installed horizontally

1 hour 5/8 Type X installed vertically

1 hour 5/8 Type X installed horizontally in a chase wall application

1 hour 5/8 Type X installed vertically in a chase wall application

2 hour 2 layers 5/8 Type X installed horizontally

2 hour 2 layers 5/8 Type X installed vertically

2 hour 2 layers 5/8 Type X installed horizontally in a chase wall application

2 hour 2 layers 5/8 Type X installed vertically in a chase wall application


Link to the Sound Test Reports:

STC = 41.............TL08-119
STC = 45.............TL08-120
STC = 52.............TL08-122
STC = 52.............TL08-121
STC = 54.............TL08-201