Knowledge Library

The most comprehensive technical resource for light straw clay construction in North America — available free to collaborative members.

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What's Inside

Spec & Design

LSC Mix Design Reference Guide

Complete mix ratio tables for light, medium, and dense assemblies across 12 climate zones. Includes clay slip preparation and field quality testing.

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Application

Low-Rise Application Walkthrough

Step-by-step guide for 3–4 story LSC wall assemblies. Framing schedules, form details, filling procedures, and inspection checkpoints.

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Performance

R-Value & Thermal Performance Reference

Estimated R-values by mix density and wall thickness, with comparisons to fiberglass, spray foam, and mineral wool.

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Materials

Clay Sourcing & Quality Assessment

How to identify, source, and field-test clay slip quality. Includes regional sourcing notes for 8 US regions.

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+ 40 more guides, assembly drawings, field data reports, and code compliance resources

Join to Access Everything

Membership is free for building professionals, architects, students, and anyone serious about natural construction. No payment ever required.

Full spec guides and mix design tables

Technical performance data and field notes

Builder network and community forum

Searchable archive of all documents

Early access to new test results

Want Library updates?

Joining the Collaborative is a real membership, but it does not create an online Library login. Members will receive updates as new resources and testing information become available.

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