The roof has a structure of cross-laminated timber - an engineered material made up from thin layers of bondedwood, which in this instance is locally sourced black spruce.
屋顶使用了由薄层胶合木组成的交错木结构，这取材于当地黑云衫的实木材料。
2
The construction team embraced historic materials and techniques, and the Horten 2-29 replica, like the original, is made largely of wood and bonded with glue and nails.