We supply and design products that improve historic slate roofs around the world. An outgrowth of Slate International, Inc., our experience includes:


  • Yale University
  • Princeton University
  • The Smithsonian Institution
  • The Audubon Society
  • Duke University
  • The US Naval Academy
  • Arlington National Cemetery
  • The Letterman residence
  • Hundreds of landmark structures—from coast to coast in the US, from Cyprus to Indonesia abroad


Filled US supply gap

1985 – Helped fill supply gap in US by introducing high‐grade European slate.

Led development of Indian exports

1993 – Led development in India of Himalayan slate export market.

Commissioned by investors

1997 – Commissioned by investors to create improved ventilation system. Designed and developed TopSlate™.

Commissioned by UK and US investors

2008 – Commissioned by UK and US investors to create fixture to extend slate life. Designed and developed SlateSpacer.