Cross-Laminated Timber (CLT) is an engineered wood panel product made by stacking layers of dimension lumber in alternating perpendicular directions, bonding them under heat and pressure. The result is a structural panel of exceptional rigidity, dimensional stability, and load-bearing capacity — capable of replacing concrete and steel in walls, floors, and roofs across a wide range of building typologies.

At Blockhouse, CLT panels were prefabricated off-site by Vaagen Timbers in Colville, WA — sourced from small-diameter logs within 100 miles of the mill. This local supply chain dramatically reduces embodied carbon compared to imported materials, while supporting rural forest economies in Eastern Washington. The panels arrived on-site ready to assemble, enabling fast, quiet, and waste-minimal construction.

CLT's structural precision also made the modular cluster layout possible: each unit is a self-contained assembly that conforms to site geometry without sacrificing interior quality. The post-based foundations avoided slab pours, protecting existing tree root systems and reducing site disturbance to a minimum.