I was thinking of doing the dual wall method. 18 inches of cob 6 inches of straw clay or hempcrete. I think the best way to do it would be to build the wall up as one, but I worry about the insulating wall getting rained on. Would it be smart to use slip forms to build the 18 inch cob walls and put ties in it, build the roof, then go back and put the forms back on the wall at 24 inches to fill in the 6 inches of insulating materials using the ties to integrate the walls together. Or, would you have a better suggestion?

Hey everyone, Big announcement: I'm running my biggest class sale of the year for the next 2 weeks. My complete Cob House Video Workshop is 90% off - just $50 instead of $500. But I'm limiting this to the first 150 people only. **What you get:** - 20+ hours of video lessons (all downloadable) - 150+ pages of lesson materials - Complete design course with 100+ diagrams - Tiny cob house plans - Everything downloadable forever **Important:** While this is called a "cob" course, these principles apply directly to ALL natural building methods - straw-clay, hempcrete, strawbale, rammed earth, adobe, earthbag, and more. Sale ends in 2 weeks or when we hit 150 people (whichever comes first). Get it here: https://www.thiscobhouse.com/winter-sale Questions? Drop them below. Alex

🔴Get the 90% OFF Sale: https://www.thiscobhouse.com/winter-sale

I have a brand new calculator app for you! It will calculate material and labor cost for your cob wall projects. Give a try! You can find the calculator on my website here: https://www.thiscobhouse.com/cob-wall-cost-calculator/ If you have any feedback or bug reports, please let me know!

I know that most people can't travel to attend a workshop. Let me know, who would be interested in seeing my classes live via Zoom, and recorded for watching later? I need some feedback so I can start putting this together. Thanks!