The short answer is technically no, but functionally yes.

In the world of high-performance building, there is a distinction between the strict regulatory definition of continuous insulation (CI) and the thermal performance of an assembly.

Here is the breakdown of how to be careful with that claim and how to frame it for Passive House certification or navigate strict code language.

1. The Strict Regulatory Definition

According to the IECC and ASHRAE 90.1, continuous insulation is defined as:

"Insulation that is uncompressed and continuous across all structural members without thermal bridges other than fasteners and service openings."

In the TAMBS (a form of Larsen Truss system), the secondary wall, a Boise Cascade I-Joist (BCI), is attached to the primary cross-laminated timber (CLT) structural wall using adhesive and screws. Because the BCIs have a cross-sectional area significantly larger than a "fastener" (like a screw or nail), they are technically thermal bridges.

Although THERM energy modeling shows the heat loss through these gussets as negligible, a strict code official or a literal interpretation of the ASHRAE definition would classify this as "advanced framing" or "deep cavity insulation" rather than true CI.

2. The Passive House (PHIUS/PHI) Perspective

Passive House cares less about the label "Continuous Insulation" and more about the (psi) U-value and Ψ-values (linear thermal bridges).

• Effective R-value: Because the wood gussets in the TAMBS only account for a tiny percentage of the wall's surface area (often <1%), the "effective" R-value of the assembly is very close to the "center-of-cavity" R-value.

• Modeling Accuracy: In software like THERM or Flixo, you are likely seeing a "clear wall" calculation where the isotherms look nearly straight. In Passive House, you don't "claim" CI; you simply input the geometry and materials. The software accounts for the wood-to-insulation ratio.
  

• Here is an example THERM model of the TAMBS showing the very consistent isotherms:
  
  

3. Why the Distinction Matters

If you are filling out a ComCheck or trying to meet a specific prescriptive code requirement that mandates "R-20 + R-5CI" you may run into trouble calling the TAMBS "CI."

4. Better Terminology

To be both accurate and professionally safe (especially in documentation), avoid the blanket term "Continuous Insulation." Instead, use:

• "Thermally Broken Assembly": This acknowledges the bridges exist but are mitigated.

• "Effectively Continuous": Great for narratives, but specify it's based on 2D/3D thermal modeling.

• "Deep Cavity Assembly with Distributed Thermal Bridging": This is the most technically accurate description for the TAMBS.
  

Summary Table

The Verdict:

If you are speaking to a Passive House consultant, they will understand what you mean by "effectively continuous." However, if you are submitting a permit or a legal specification, classify it as a high-performance cavity wall to avoid misrepresenting the assembly under ASHRAE standards.