I have not used these highly sustainable building blocks yet but am intrigued by them. Here’s what I’ve learned:

Lightweight, yet strong (can be used to construct a 4-5 story structure) & can be cut w/ common saws/tools

Carbon Negative - absorb more CO2 than is used to create them + the interior structure is made of bio-resin

Have high insulation R-values, are fire-resistant + moisture & pest resistant

They have dedicated blocks for sub-surface foundations (waterproof) w/ R-70 Insulation

The holes in the middle align to become chases for electrical & plumbing

Install 30% faster than similar construction projects

They are made in Canada and are currently 8-11 months out due to high demand