RENCO

RENCO is a Florida construction technology company that replaces concrete and steel with interlocking blocks made from MCFR, a mineral composite of repurposed glass fibre, resin and calcite fused with methyl methacrylate. The compound is formed like an injection moulding into blocks, roof beams, joists and flooring.

Residential blocks measure six by eight inches and commercial ones eight by eight, and they are laid with a proprietary adhesive following colour-coded plans, so no heavy equipment is needed on site: the company says a 2,200 square foot single-storey house can go up in a day. Production runs from a 50,000 square foot plant in Jupiter, Florida, and the system has passed one and two-hour loaded fire ratings.