Earth Friendly Building Materials, LLC, in Tempe, Arizona

Earth Friendly Building Materials, LLC manufactures Earth Friendly Block in Tempe, Arizona.

EF Block, the company's flagship product, uses recycled polystyrene and plastics to create durable, fire-resistant, and highly insulated blocks. These can be easily shaped into almost any construction design and may be stacked on top of one another without the need for mortared seams.

Its products are described in detail on its website, and instructional documents are available for download in PDF format and promotional video. A schedule of events and training workshops is included.