"S-5!® is the greatest thing to happen to metal roofing since Galvalume®!"
–Angelo Borzillo, Co-Inventor of Galvalume®

Angelo Borzillo: Metal Roof Innovator

In the 1960s, two young Bethlehem Steel researchers, Angelo Borzillo and Jim Horton, began a program to develop a hot-dip coated steel that married the barrier corrosion resistance of aluminized steel with the sacrificial protection of galvanized steel. They could never have envisioned how successful their development would become.

The coated steel they invented was tradenamed Galvalume®. The generic descriptor for the coating is 55%AlZn (55% Aluminum; 43.4% Zinc by weight). BIEC licensed this coating technology to other mills and so there are also other tradenames for this coating: Aluzinc®, Zincalume® and Zintro-alum™ to name a few. The growth of 55%AlZn sheet steel around the world has been remarkable and its cumulative global production has far exceeded the 100 million ton milestone.

Rob Haddock: Metal Roof Attachment Solutions Innovator

Metal Construction News offers a feature in their publication titled, Leadership Series. It spotlights individuals who have shaped the metal roofing industry. The Series featured S-5!’s founder and CEO, Rob Haddock. In the interview, Rob describes how he got started in the metal roofing industry, his years as an industry consultant, his innovations that led to the birth of S-5!, and his relationship with Angelo Borzillo and the future of Galvalume.

Rob also describes how S-5! earned Angelo Borzillo’s solid endorsement. After knowing each other for years, Ange said to Rob: “We went around all over the country looking at these Galvalume roofs and the material far exceeded our expectations. But some of the things we saw people do to roofs were absolutely abominable—causing leaks, corrosion and other problems. Your S-5! clamp would have solved 90 percent of the problems we saw!”

You can read the complete interview here.

Then Watch the 4-Part Series Interview


MCN Leadership Series | Rob Haddock | Part 1

Watch Part 1 above. Then follow it with the rest of the series:

MCN Leadership Series | Part 2

MCN Leadership Series | Part 3

MCN Leadership Series | Part 4


You can find more information about Galvalume and BIEC here.