Low cement masonry block - sustainable, resilient and beautiful, uses half the cement
Interior kitchen wall made from green building materials - Watershed Block
Green low concrete Watershed Block in a demonstration home in Napa, California
Interior wall made from low carbon alternative green building material Watershed Block
Watershed block are made from half the cement as a traditional concrete masonry unit CMU
Samples of locally sourced minerals to be used in low cement masonry
Production of low cement Watershed Block
Watershed Blocks in the factory in Napa, California
Low cement masonry block - sustainable, resilient and beautiful, uses half the cement

Watershed Block coming off the production line in the pilot factory in Napa, California. Watershed Block are the same size and offer the same structural characteristics of a traditional concrete block while using half the cement and using recycled material in place of virgin mined rock.

Interior kitchen wall made from green building materials - Watershed Block

Bronze anodized window frames, black Cesarstone contertops, natural birch cabinets and Watershed Blocks. Lighted from above as they are here, the color variations in each individual block reveal the minerality of their composition.

Green low concrete Watershed Block in a demonstration home in Napa, California

Watershed Blocks are special in the way that they capture the character of the earth from which they are formed. The blocks are produced from local, recycled quarry material.

Interior wall made from low carbon alternative green building material Watershed Block

A soldier course of eight inch blocks with a white linen club chair and hand woven Odegard rug. Just as natural rock is made up of a million individual grains of quartz, feldspar, and trace elements, Watershed Blocks celebrate their unique composition. Unlike uniform concrete blocks, made of cement and dye, no two Watershed Blocks are exactly the same.

Watershed block are made from half the cement as a traditional concrete masonry unit CMU

Part of the idea of the block is that it provides structure and finish in one application. Rather than needing to clad the exterior and interior of the structural elements with finish, this product provides a beautiful finish along with the structure.

Samples of locally sourced minerals to be used in low cement masonry

Watershed Block’s color variation originates from the natural local recycled rock and quarry waste. Each region’s unique mineralogy provides the hues and shades found in the Watershed Block

Production of low cement Watershed Block

Watershed Blocks being produced and extracted from an eighty-thousand pound press at a rate of three per minute. Two men run the big machine, but the blocks are fragile when they first come out of the press and need to be handled with care.

Watershed Blocks in the factory in Napa, California

Out of the press, the blocks spread out along the roller conveyors where they undergo a twelve hour misting prior to being stacked onto pallets. After seven days of curing under plastic “hoodies” they are ready to install. Concrete blocks, in contrast, are cured in kilns with heat and steam.