Management Team

Greg
Born 1959 in New Zealand, Greg Flavall graduated High School in Vancouver, Canada.


Greg pursued a career in building, learning all facets of construction, later moving to California where he partnered with a friend to start a General Contracting company.

2006 saw a change of direction for Greg when he learned about the many benefits of Industrial Hemp and it's applications, particularly in regard to construction, to reduce the CO2 emitted from mineral based building products and to increase indoor air quality.

In 2008 Greg co-founded Hemp Technologies (USA) Inc. in Asheville, NC, to build healthy, energy saving homes with Hemp+Lime.

Greg is a qualified Chef, plays Scottish BagPipes and enjoys golf, tennis and fishing.

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David Madera, born 1959, Heidelberg, Germany.
The son of a military father, David moved around alot but finally settled in Asheville, NC.


David graduated with a degree in economics and began his career in San Francisco's Banking and Finance industry.  It wasn't long before David's entrepreneurial spirit kicked in and he started his first business. 

Years later David started Madera Contracting and Design in Venice Beach, CA. where he completed many custom building projects. 

David was also looking for sustainable, green building products for his projects when his partner, Greg, called about Hempcrete. 

Together with Greg, David co-founded Hemp technologies, Inc. to build sustainable, clean air projects in North America. "There is no question on how green this product is" said David in a recent Public radio interview.

David is an avid yoga practitioner and enjoys golf and reading for relaxation.

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Business Development

Albert Guadan Headshot
Albert Guadan, 34, handles business development and sales in Sacramento, California, helping to educate the community in using Industrial Hemp and Lime materials, as well as our other natural, sustainable products.

Well versed in current affairs, world policy and economics, Albert is very health conscious and enjoys running, hiking, martial arts and breathing techniques.




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Hemp Technologies is a member of the Western North Carolina Green Building Council (WNCGBC) which oversees "Healthy Built" homes certifications for new home construction.



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Hemp Technologies is a member of The Hemp Industries Association a non-profit trade group representing hemp companies, researchers and supporters. HIA has been at the forefront of the drive for fair and equal treatment of Industrial Hemp since 1992.


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Hemp Technologies is a member of the Canadian Hemp Trade Alliance. Canadian farmers and businesses are interested in the growing business of hemp as it realizes its potential to produce healthy food and environmentally-friendly products, including paper, textiles, bio-composites and sustainable building materials.



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Hemp Technologies is a member of The International Hemp Building Association. The IHBA develops, promotes and supports the production and use of all hemp based construction materials and their by-products in a sustainable and bio-regional manner for the benefit of the ecology and communities of all regions of the world.

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Hemp Technologies is a member of the Asheville Chamber of Commerce




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