California Homes from California Wood

Community-Scale Mass Timber

Cross-Laminated Timber (CLT)

Step 1

A dense forest of tall pine trees with sunlight filtering through the branches, and fallen branches and logs on the ground.

Manufacturing with Local Wood

Mosaic Timber will source kiln-dried lumber from Northern California forests and locally-owned, FSC-certified sawmills to make into our CLT panels.

Gluing and Pressing Lumber

Step 2

Diagram showing layered 2x4 boards which are the structure layout for the Cross Laminated timber panels

Using a Hundegger Computer Numerical Control (CNC) machine to precision fabricate panels, Mosaic Timber will produce assembly-ready material to the specification of each custom home, commercial, or other construction project.

Step 3

Construction workers installing large wooden CLT panels on a building under construction, with a crane lifting a panel into place.

Panel Fabrication for Easy Assembly

A CLT face press aligns dimensional 2”x4” or 2”x6” lumber and glues the boards at right angles to form large, sturdy wall and roof panels with typically three, five, or seven layers. Mosaic Timber production will include panels up to 11.5’ wide by 46’ long.

Step 4

Interior of a room with large, angled windows showing a mountain landscape and blue sky with clouds outside, wooden CLT ceiling, and trim around the windows.

Carbon-Smart, Beautiful Buildings

The end product retains all the natural beauty of exposed wood while providing key structural elements of the building’s wall or roof system. CLT homes invoke a biophilic response, store carbon, and are also highly fire-resistant.

Featured: Ledinek Engineering

Crescent Mills, CA facility site with a crane lifting a large, wrapped piece of fabrication equipment, a forklift, and construction vehicles, with a mountain landscape in the background.

The Mosaic Timber XE Face Press and Finger Jointing line were manufactured by Ledinek Engineering in Slovenia - the press was delivered to Crescent Mills, CA in November 2025.

See What Ledinek Said About Our Project

We’re carefully designing a state-of-the-art production facility and choosing partners, like Ledinek Engineering, who share our values and interest in innovating on the CLT model.

Large industrial manufacturing facility with a long, row of teal-colored CLT machinery central to the factory. Workers and various equipment surround the machinery, and shelves with parts line the walls.

Mass Timber home exterior with a steel panel exterior, wooden underside exposed on the porch roof, and blue sky with clouds.

Our nonprofit has been building with mass timber for almost 10 years.

Now Mosaic Timber will supply it to projects in California and beyond.

CLT Homes in Greenville, CA

A modern two-story CLT home with a Mass timber wooden and steel exterior, large sliding glass doors, and a spacious deck, surrounded by trees with some autumn foliage, with a group of people standing nearby.

The Sierra Institute built the first fully cross laminated timber (CLT) building in California in 2017, and after the Dixie Fire rebuilt three single-family homes in Greenville using CLT supplied from out of state.

Roundhouse Council Building

Most recently, the Sierra Institute partnered with the Roundhouse Council to rebuild the Roundhouse Indian Education Center out of mass timber in partnership with Seattle-based architecture firm atelierjones.

Interior of Roundhouse Council Building in Greenville, CA. A wooden CLT dome structure with people inside, construction tools, and materials present.