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Getting Energized about Efficiency
Glavel, a Vermont-based startup, plans to take recycled glass, grind it into powder and combine it with a foaming agent so it can be a substitute for stone gravel, which is used under building foundations and roads.

Insulating Gravel
The relatively high price of this foam-glass foundation base material is offset by the lack of a need for rigid foam sub-slab insulation.

Glass Action: A Burlington Startup Aims to Turn Recyclables Into Building Material
Burlington entrepreneur Rob Conboy has high hopes for Glavel. The foam glass aggregate he held on a recent afternoon looked like a stone but weighed no more than a sponge.

What Happens to Vermont’s Recycling?
Vermont has had mandatory recycling since 2015. Is it working? And where does our recycling go, and what does it become?

Two Startups Seek to Grow Interest in Foam Glass Fill
Company CEO Rob Conboy said Glavel grew out of a Passive House conference he attended in Germany in 2016. He was scouting for European technology that could be used to lower the cost of energy-efficient construction in the U.S.

Recycling Glass into Aggregate
Highlighting the strength of glass over steel, and the thermally insulating properties over rigid foam board, Glavel creates a new system that can insulate without harmful environmental effects.

GLAVEL Foam Glass Gravel Now Available in North America
Building owners and developers in need of an alternative to petroleum-based sub-slab insulation and an overall boost to their sustainability characteristics, Glavel’s foam glass gravel is the solution.

GLAVEL’S MANUFACTURING TO GO 100% RENEWABLE ENERGY BY SUMMER 2020
Glavel’s manufacturing will transition to 100% renewable energy in summer 2020, dramatically slashing the embodied carbon emissions from the product.

Glavel Could Replace Plastic Foam Below Grade
Going foam-free is getting easier and more affordable.