Tier 1 modifies common construction practice at a superficial level, but fundamentally transforms its capabilities.

In Tier 1, we've replaced plastic insulations with wood or wool alternatives, increasing the assembly's carbon sequestration and use of natural, non-toxic materials. We've added smart vapor, air and thermal control layers with Pro Clima membranes inboard and outboard of a continuous insulation layer. These airtightness and insulation measures greatly increase the assembly's durability and have been executed through a holistic design process.

Metal framing, while less effective than wood framing, can move from being a climate liability to being part of the solution. Switching insulations from foam to wood with a complete smart vapor, air and thermal control approach are first steps in building a Smart Enclosure.

With this approach, the results start to meet the principles of lower embodied carbon, lower toxicity, and higher levels of efficiency, comfort and durability.