Article That I Am Speaking About:
Passive Solar Greenhouse Case Studies: http://bit.ly/2ERJKtY
In this video Rob Avis of Verge Permaculture talks about the importance of glazing selection in a passive solar greenhouse. Glazing needs to be a minimum of 70% transmissivity to ensure that the plants get enough sun. However we are constantly trying to find ways to minimize heat loss and as we increase the R-value of the greenhouse, it typically comes at the expense of transmissivity. Typically we use glazing from, http://www.co-excorp.com/, however, we have seen double poly walls or even a bubble wrap type material from https://www.solawrapfilms.com/ .
SALATIN SEMESTER BOOK: https://salatinsemester.com/
Verge Website: https://vergepermaculture.ca/
About Rob Avis and Verge Permaculture:
In less than 10 years, Rob & Michelle Avis left Calgary’s oil fields and retooled his engineering career to help clients and students design integrated systems for shelter, energy, water, waste and food, all while supporting local economy and regenerating the land. He’s now leading the next wave of permaculture education, teaching career-changing professionals to become eco-entrepreneurs with successful regenerative businesses. Learn more and connect with Rob & Michelle at https://vergepermaculture.ca/