This ECB updates the Engineering & Construction (E&C) community on the continued advancement of Cross Laminated Timber (CLT) by announcing the publication of a new Uniform Facilities Guide Specification (UFGS) 06 17 19 Cross Laminated Timber (CLT). CLT is a structural building technology relatively new to the US market. CLT as a building technology can be viewed as falling between lightweight stud construction and heavier steel and concrete systems. Many CLT buildings have been built ten stories or taller, well exceeding the practical height limitation of traditional stud construction. Unlike steel and concrete, wood is a sustainable and renewable resource which sequesters carbon in the environment, keeping it out of the atmosphere. As more domestic manufacturers become available, the cost of CLT is expected to fall between lightweight stud and steel and concrete construction based on the costs of materials and ease of assembly.