Carbonless Logic™ Wall Assembly Reference Library

700+ Verified Wall Assemblies. One-Time Purchase. Lifetime Access. Ongoing Updates.

The Carbonless Logic™ Wall Assembly Reference Library is a licensed, professional-grade technical resource designed for builders, designers, energy consultants, and building science professionals.

This library includes the complete Carbonless Logic™ Wall Assembly Master Index featuring more than 700 wall assemblies with side-by-side performance data, consistent calculation methodology, and transparent assumptions.

Library contents include:

• 700+ complete wall assembly references

• Parallel-path and whole-wall R-value calculations

• U-factors and RSI values

• Detailed layer-by-layer assembly breakdowns

• Fixed reference wall assemblies for apples-to-apples comparison

• Climate-specific performance insights

• Material reference tables including air films, lumber at R-1.25 per inch, OSB, plywood, claddings, cavity insulation options, and continuous insulation systems including rigid, semi-rigid, and integrated products such as ZIP-R

• Sample assemblies and full calculation methodology

• Disclaimers and usage guidance

• Video walkthrough explaining how to read, compare, and apply the assemblies (coming soon)

Each assembly download includes 8 or more distinct calculations, allowing users to fully understand thermal performance, parallel-path impacts, and whole-wall outcomes with complete transparency.

Sample Data:

2x4 Wall Assembly with R13 Fiberglass Batt
5.5” Un-Insulated Tstud with Huber R6 Zip and Blown In Fiberglass

Access to the full library requires a one-time purchase through carbonless.org. Upon purchase, users receive secure, licensed access to the complete document set.

Access options:

• Personal Access: Licensed for one individual user

• Corporate Access: Licensed to one company and allows up to 10 users under a single shared login

Both access options include downloadable, watermarked PDFs and free lifetime updates as new assemblies, materials, and system types are added, including SIPs, TSUPs, and ICF.

If your firm, organization, or institution requires access for more than 10 users, please contact hello@carbonless.org to discuss expanded licensing and managed access options.

Important note:
This library is an educational and comparative reference only. It is not a code compliance document, engineering report, or installation guide. All values are steady-state and provided for informational purposes. Users are responsible for verifying calculations, confirming local code requirements, and consulting qualified professionals as needed.

The library is licensed, non-transferable, and subject to revocation for misuse. Unauthorized sharing or reproduction is prohibited. Full license terms are provided at checkout.

Questions, corrections, or feedback are always welcome at hello@carbonless.org. This library is actively maintained and continuously refined for accuracy and clarity.

© 2026 Brian Iverson / Carbonless, Inc. All rights reserved. Licensed use only. Unauthorized reproduction or distribution prohibited.