About this course

This course was originally presented at BuildingEnergy Boston 2020, a conference presented by the Northeast Sustainable Energy Association (NESEA)

Join the growing community of radically responsible industry stewards using Hempcrete, a bio-composite material created from the woody core of the hemp plant combined with a lime-based binder. Trusted around the world as a robust, high-performance sustainable building system, HempLime entered the US market a decade ago and is poised to take the industry by storm. Delve into design and construction details and review the specifics of costs, source material supply, and obtaining building approval from officials. Hempcrete 101 was presented as a pre-conference webinar, and you may want to view that as a primer to this intermediate session.

Professional credits (or CEUs, "continuing education units") are not available at this time; check back later for options to earn credits.

Ready To Sign Up Today? Click Here to Enroll

Learning Objectives

  • Explore the construction detailing for hempcrete and complementary materials, including the floor, walls, roof, and key junctions.
  • Analyze costs as compared to conventional buildings
  • Identify material resources for use in hempcrete
  • Review the information necessary for professionals and owners to obtain building permits

Course outline

1 module • 7 assignments • 1:03 hours of video lectures

Module 1 • 5 assignments
Hempcrete 201: Take It to the Next Level with a Natural, Carbon-Beneficial Material

  • Welcome New Instructor - Watch this video first! (05:27 minutes)
  • Hempcrete 201: Take It to the Next Level with a Natural, Carbon-Beneficial Material (58:19 minutes)
  • Optional: Sources for Hempcrete materials in USA (.pdf)
  • Optional: Hempcrete Research Resources (.pdf)
  • OPTIONAL: Subscribe to NESEA Communications


  • Tom Rossmassler

    Chief Embodied Officer, HempStone, LLC
    View profile

    Tom is on a quest to create radically responsible architecture. He began HempStone in 2018 after earning a Sustainable MBA. Tom’s research focused on the creation of a regional industrial hemp processing facility in New England. Tom concurrently serves as CEO of Energia, a worker-owned cooperative specializing in building performance services that he started in 2009.... Learn more

  • Alex Sparrow

    Director, UK Hempcrete
    View profile

    Alex Sparrow is recognized globally as an expert on hempcrete construction. A director at UK Hempcrete, he co-authored The Hempcrete Book, published in 2014 and still the definitive guide to this remarkable building material. Alex speaks at events and provides training and consultancy world-wide for others wanting to use hempcrete. Learn more

Frequently asked questions

How does this course work?
This is a free course. Enroll today and get access to all of the materials instantly. The lecture video and other materials are available any time.
How long do I have access to the materials?
For free courses there is no guarantee for how long the course materials will be available.
Is there a certificate of completion?
Certificates of completion are only provided to HeatSpring Membership subscribers. This course has not been approved by any credentialing organizations (NABCEP, AIA, USGBC etc) for Continuing Education Credits (CEUs). This course is for self education purposes only and completion does not indicate a level of professional expertise or credential.
Can I register multiple people?
Yes, this is a free course so you can share this page with other people from your group.


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