Glavel, Inc. is a foam glass gravel manufacturer out of Burlington VT. Both versatile and lightweight, foam glass gravel’s physical properties allow it to be a preferred material across the built environment.

With deep ties to Passive House, Founder and CEO Rob Conboy discovered foam glass at the Passive House International Conference in Darmstadt, Germany in 2016. Realizing that foam glass was such an incredibly versatile material, he immediately set out to bring this technology to the United States. Fast forward to 2022, the foam glass industry in the United States is burgeoning, with the material become widely adopted across a number of industries. Namely, residential and commercial subslab insulation, lightweight green roof fill, and civil insulative fill.

Glavel’s foam glass gravel  is manufactured in Essex VT, where 7,500 tons of recycled glass are transformed into foam glass annually. The plant is uniquely positioned in the United States, as it’s the only foam glass plant powered entirely by renewable energy, keeping Glavel’s embodied carbon footprint incredibly low.